ART: Change Checker syntax for variables

This patch changes the syntax for defining and referencing variables
from square brackets '[[VAR]]' to angle brackets '<<VAR>>'. This is
done in order to avoid clashes when matching against lists enclosed
in square brackets.

Change-Id: Ib9560b07bdc7bd641fd1eb6143c0063e0783f1eb
diff --git a/test/441-checker-inliner/src/Main.java b/test/441-checker-inliner/src/Main.java
index 631b140..1c3855f 100644
--- a/test/441-checker-inliner/src/Main.java
+++ b/test/441-checker-inliner/src/Main.java
@@ -17,9 +17,9 @@
 public class Main {
 
   // CHECK-START: void Main.InlineVoid() inliner (before)
-  // CHECK-DAG:     [[Const42:i\d+]] IntConstant 42
+  // CHECK-DAG:     <<Const42:i\d+>> IntConstant 42
   // CHECK-DAG:                      InvokeStaticOrDirect
-  // CHECK-DAG:                      InvokeStaticOrDirect [ [[Const42]] ]
+  // CHECK-DAG:                      InvokeStaticOrDirect [ <<Const42>> ]
 
   // CHECK-START: void Main.InlineVoid() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
@@ -30,94 +30,94 @@
   }
 
   // CHECK-START: int Main.InlineParameter(int) inliner (before)
-  // CHECK-DAG:     [[Param:i\d+]]  ParameterValue
-  // CHECK-DAG:     [[Result:i\d+]] InvokeStaticOrDirect [ [[Param]] ]
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Param:i\d+>>  ParameterValue
+  // CHECK-DAG:     <<Result:i\d+>> InvokeStaticOrDirect [ <<Param>> ]
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: int Main.InlineParameter(int) inliner (after)
-  // CHECK-DAG:     [[Param:i\d+]]  ParameterValue
-  // CHECK-DAG:                     Return [ [[Param]] ]
+  // CHECK-DAG:     <<Param:i\d+>>  ParameterValue
+  // CHECK-DAG:                     Return [ <<Param>> ]
 
   public static int InlineParameter(int a) {
     return returnParameter(a);
   }
 
   // CHECK-START: long Main.InlineWideParameter(long) inliner (before)
-  // CHECK-DAG:     [[Param:j\d+]]  ParameterValue
-  // CHECK-DAG:     [[Result:j\d+]] InvokeStaticOrDirect [ [[Param]] ]
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Param:j\d+>>  ParameterValue
+  // CHECK-DAG:     <<Result:j\d+>> InvokeStaticOrDirect [ <<Param>> ]
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: long Main.InlineWideParameter(long) inliner (after)
-  // CHECK-DAG:     [[Param:j\d+]]  ParameterValue
-  // CHECK-DAG:                     Return [ [[Param]] ]
+  // CHECK-DAG:     <<Param:j\d+>>  ParameterValue
+  // CHECK-DAG:                     Return [ <<Param>> ]
 
   public static long InlineWideParameter(long a) {
     return returnWideParameter(a);
   }
 
   // CHECK-START: java.lang.Object Main.InlineReferenceParameter(java.lang.Object) inliner (before)
-  // CHECK-DAG:     [[Param:l\d+]]  ParameterValue
-  // CHECK-DAG:     [[Result:l\d+]] InvokeStaticOrDirect [ [[Param]] ]
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Param:l\d+>>  ParameterValue
+  // CHECK-DAG:     <<Result:l\d+>> InvokeStaticOrDirect [ <<Param>> ]
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: java.lang.Object Main.InlineReferenceParameter(java.lang.Object) inliner (after)
-  // CHECK-DAG:     [[Param:l\d+]]  ParameterValue
-  // CHECK-DAG:                     Return [ [[Param]] ]
+  // CHECK-DAG:     <<Param:l\d+>>  ParameterValue
+  // CHECK-DAG:                     Return [ <<Param>> ]
 
   public static Object InlineReferenceParameter(Object o) {
     return returnReferenceParameter(o);
   }
 
   // CHECK-START: int Main.InlineInt() inliner (before)
-  // CHECK-DAG:     [[Result:i\d+]] InvokeStaticOrDirect
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Result:i\d+>> InvokeStaticOrDirect
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: int Main.InlineInt() inliner (after)
-  // CHECK-DAG:     [[Const4:i\d+]] IntConstant 4
-  // CHECK-DAG:                     Return [ [[Const4]] ]
+  // CHECK-DAG:     <<Const4:i\d+>> IntConstant 4
+  // CHECK-DAG:                     Return [ <<Const4>> ]
 
   public static int InlineInt() {
     return returnInt();
   }
 
   // CHECK-START: long Main.InlineWide() inliner (before)
-  // CHECK-DAG:     [[Result:j\d+]] InvokeStaticOrDirect
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Result:j\d+>> InvokeStaticOrDirect
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: long Main.InlineWide() inliner (after)
-  // CHECK-DAG:     [[Const8:j\d+]] LongConstant 8
-  // CHECK-DAG:                     Return [ [[Const8]] ]
+  // CHECK-DAG:     <<Const8:j\d+>> LongConstant 8
+  // CHECK-DAG:                     Return [ <<Const8>> ]
 
   public static long InlineWide() {
     return returnWide();
   }
 
   // CHECK-START: int Main.InlineAdd() inliner (before)
-  // CHECK-DAG:     [[Const3:i\d+]] IntConstant 3
-  // CHECK-DAG:     [[Const5:i\d+]] IntConstant 5
-  // CHECK-DAG:     [[Result:i\d+]] InvokeStaticOrDirect
-  // CHECK-DAG:                     Return [ [[Result]] ]
+  // CHECK-DAG:     <<Const3:i\d+>> IntConstant 3
+  // CHECK-DAG:     <<Const5:i\d+>> IntConstant 5
+  // CHECK-DAG:     <<Result:i\d+>> InvokeStaticOrDirect
+  // CHECK-DAG:                     Return [ <<Result>> ]
 
   // CHECK-START: int Main.InlineAdd() inliner (after)
-  // CHECK-DAG:     [[Const3:i\d+]] IntConstant 3
-  // CHECK-DAG:     [[Const5:i\d+]] IntConstant 5
-  // CHECK-DAG:     [[Add:i\d+]]    Add [ [[Const3]] [[Const5]] ]
-  // CHECK-DAG:                     Return [ [[Add]] ]
+  // CHECK-DAG:     <<Const3:i\d+>> IntConstant 3
+  // CHECK-DAG:     <<Const5:i\d+>> IntConstant 5
+  // CHECK-DAG:     <<Add:i\d+>>    Add [ <<Const3>> <<Const5>> ]
+  // CHECK-DAG:                     Return [ <<Add>> ]
 
   public static int InlineAdd() {
     return returnAdd(3, 5);
   }
 
   // CHECK-START: int Main.InlineFieldAccess() inliner (before)
-  // CHECK-DAG:     [[After:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                     Return [ [[After]] ]
+  // CHECK-DAG:     <<After:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                     Return [ <<After>> ]
 
   // CHECK-START: int Main.InlineFieldAccess() inliner (after)
-  // CHECK-DAG:     [[Const1:i\d+]] IntConstant 1
-  // CHECK-DAG:     [[Before:i\d+]] StaticFieldGet
-  // CHECK-DAG:     [[After:i\d+]]  Add [ [[Before]] [[Const1]] ]
-  // CHECK-DAG:                     StaticFieldSet [ {{l\d+}} [[After]] ]
-  // CHECK-DAG:                     Return [ [[After]] ]
+  // CHECK-DAG:     <<Const1:i\d+>> IntConstant 1
+  // CHECK-DAG:     <<Before:i\d+>> StaticFieldGet
+  // CHECK-DAG:     <<After:i\d+>>  Add [ <<Before>> <<Const1>> ]
+  // CHECK-DAG:                     StaticFieldSet [ {{l\d+}} <<After>> ]
+  // CHECK-DAG:                     Return [ <<After>> ]
 
   // CHECK-START: int Main.InlineFieldAccess() inliner (after)
   // CHECK-NOT:                     InvokeStaticOrDirect
@@ -127,22 +127,22 @@
   }
 
   // CHECK-START: int Main.InlineWithControlFlow(boolean) inliner (before)
-  // CHECK-DAG:     [[Const1:i\d+]] IntConstant 1
-  // CHECK-DAG:     [[Const3:i\d+]] IntConstant 3
-  // CHECK-DAG:     [[Const5:i\d+]] IntConstant 5
-  // CHECK-DAG:     [[Add:i\d+]]    InvokeStaticOrDirect [ [[Const1]] [[Const3]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]    InvokeStaticOrDirect [ [[Const5]] [[Const3]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]    Phi [ [[Add]] [[Sub]] ]
-  // CHECK-DAG:                     Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Const1:i\d+>> IntConstant 1
+  // CHECK-DAG:     <<Const3:i\d+>> IntConstant 3
+  // CHECK-DAG:     <<Const5:i\d+>> IntConstant 5
+  // CHECK-DAG:     <<Add:i\d+>>    InvokeStaticOrDirect [ <<Const1>> <<Const3>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>    InvokeStaticOrDirect [ <<Const5>> <<Const3>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>    Phi [ <<Add>> <<Sub>> ]
+  // CHECK-DAG:                     Return [ <<Phi>> ]
 
   // CHECK-START: int Main.InlineWithControlFlow(boolean) inliner (after)
-  // CHECK-DAG:     [[Const1:i\d+]] IntConstant 1
-  // CHECK-DAG:     [[Const3:i\d+]] IntConstant 3
-  // CHECK-DAG:     [[Const5:i\d+]] IntConstant 5
-  // CHECK-DAG:     [[Add:i\d+]]    Add [ [[Const1]] [[Const3]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]    Sub [ [[Const5]] [[Const3]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]    Phi [ [[Add]] [[Sub]] ]
-  // CHECK-DAG:                     Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Const1:i\d+>> IntConstant 1
+  // CHECK-DAG:     <<Const3:i\d+>> IntConstant 3
+  // CHECK-DAG:     <<Const5:i\d+>> IntConstant 5
+  // CHECK-DAG:     <<Add:i\d+>>    Add [ <<Const1>> <<Const3>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>    Sub [ <<Const5>> <<Const3>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>    Phi [ <<Add>> <<Sub>> ]
+  // CHECK-DAG:                     Return [ <<Phi>> ]
 
   public static int InlineWithControlFlow(boolean cond) {
     int x, const1, const3, const5;
diff --git a/test/442-checker-constant-folding/src/Main.java b/test/442-checker-constant-folding/src/Main.java
index 6699acd..9a2e4fc 100644
--- a/test/442-checker-constant-folding/src/Main.java
+++ b/test/442-checker-constant-folding/src/Main.java
@@ -52,13 +52,13 @@
    */
 
   // CHECK-START: int Main.IntNegation() constant_folding (before)
-  // CHECK-DAG:     [[Const42:i\d+]]  IntConstant 42
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Const42]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Const42:i\d+>>  IntConstant 42
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Const42>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.IntNegation() constant_folding (after)
-  // CHECK-DAG:     [[ConstN42:i\d+]] IntConstant -42
-  // CHECK-DAG:                       Return [ [[ConstN42]] ]
+  // CHECK-DAG:     <<ConstN42:i\d+>> IntConstant -42
+  // CHECK-DAG:                       Return [ <<ConstN42>> ]
 
   public static int IntNegation() {
     int x, y;
@@ -73,14 +73,14 @@
    */
 
   // CHECK-START: int Main.IntAddition1() constant_folding (before)
-  // CHECK-DAG:     [[Const1:i\d+]]  IntConstant 1
-  // CHECK-DAG:     [[Const2:i\d+]]  IntConstant 2
-  // CHECK-DAG:     [[Add:i\d+]]     Add [ [[Const1]] [[Const2]] ]
-  // CHECK-DAG:                      Return [ [[Add]] ]
+  // CHECK-DAG:     <<Const1:i\d+>>  IntConstant 1
+  // CHECK-DAG:     <<Const2:i\d+>>  IntConstant 2
+  // CHECK-DAG:     <<Add:i\d+>>     Add [ <<Const1>> <<Const2>> ]
+  // CHECK-DAG:                      Return [ <<Add>> ]
 
   // CHECK-START: int Main.IntAddition1() constant_folding (after)
-  // CHECK-DAG:     [[Const3:i\d+]]  IntConstant 3
-  // CHECK-DAG:                      Return [ [[Const3]] ]
+  // CHECK-DAG:     <<Const3:i\d+>>  IntConstant 3
+  // CHECK-DAG:                      Return [ <<Const3>> ]
 
   public static int IntAddition1() {
     int a, b, c;
@@ -96,18 +96,18 @@
   */
 
   // CHECK-START: int Main.IntAddition2() constant_folding (before)
-  // CHECK-DAG:     [[Const1:i\d+]]  IntConstant 1
-  // CHECK-DAG:     [[Const2:i\d+]]  IntConstant 2
-  // CHECK-DAG:     [[Const5:i\d+]]  IntConstant 5
-  // CHECK-DAG:     [[Const6:i\d+]]  IntConstant 6
-  // CHECK-DAG:     [[Add1:i\d+]]    Add [ [[Const1]] [[Const2]] ]
-  // CHECK-DAG:     [[Add2:i\d+]]    Add [ [[Const5]] [[Const6]] ]
-  // CHECK-DAG:     [[Add3:i\d+]]    Add [ [[Add1]] [[Add2]] ]
-  // CHECK-DAG:                      Return [ [[Add3]] ]
+  // CHECK-DAG:     <<Const1:i\d+>>  IntConstant 1
+  // CHECK-DAG:     <<Const2:i\d+>>  IntConstant 2
+  // CHECK-DAG:     <<Const5:i\d+>>  IntConstant 5
+  // CHECK-DAG:     <<Const6:i\d+>>  IntConstant 6
+  // CHECK-DAG:     <<Add1:i\d+>>    Add [ <<Const1>> <<Const2>> ]
+  // CHECK-DAG:     <<Add2:i\d+>>    Add [ <<Const5>> <<Const6>> ]
+  // CHECK-DAG:     <<Add3:i\d+>>    Add [ <<Add1>> <<Add2>> ]
+  // CHECK-DAG:                      Return [ <<Add3>> ]
 
   // CHECK-START: int Main.IntAddition2() constant_folding (after)
-  // CHECK-DAG:     [[Const14:i\d+]] IntConstant 14
-  // CHECK-DAG:                      Return [ [[Const14]] ]
+  // CHECK-DAG:     <<Const14:i\d+>> IntConstant 14
+  // CHECK-DAG:                      Return [ <<Const14>> ]
 
   public static int IntAddition2() {
     int a, b, c;
@@ -127,14 +127,14 @@
    */
 
   // CHECK-START: int Main.IntSubtraction() constant_folding (before)
-  // CHECK-DAG:     [[Const6:i\d+]]  IntConstant 6
-  // CHECK-DAG:     [[Const2:i\d+]]  IntConstant 2
-  // CHECK-DAG:     [[Sub:i\d+]]     Sub [ [[Const6]] [[Const2]] ]
-  // CHECK-DAG:                      Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Const6:i\d+>>  IntConstant 6
+  // CHECK-DAG:     <<Const2:i\d+>>  IntConstant 2
+  // CHECK-DAG:     <<Sub:i\d+>>     Sub [ <<Const6>> <<Const2>> ]
+  // CHECK-DAG:                      Return [ <<Sub>> ]
 
   // CHECK-START: int Main.IntSubtraction() constant_folding (after)
-  // CHECK-DAG:     [[Const4:i\d+]]  IntConstant 4
-  // CHECK-DAG:                      Return [ [[Const4]] ]
+  // CHECK-DAG:     <<Const4:i\d+>>  IntConstant 4
+  // CHECK-DAG:                      Return [ <<Const4>> ]
 
   public static int IntSubtraction() {
     int a, b, c;
@@ -150,14 +150,14 @@
    */
 
   // CHECK-START: long Main.LongAddition() constant_folding (before)
-  // CHECK-DAG:     [[Const1:j\d+]]  LongConstant 1
-  // CHECK-DAG:     [[Const2:j\d+]]  LongConstant 2
-  // CHECK-DAG:     [[Add:j\d+]]     Add [ [[Const1]] [[Const2]] ]
-  // CHECK-DAG:                      Return [ [[Add]] ]
+  // CHECK-DAG:     <<Const1:j\d+>>  LongConstant 1
+  // CHECK-DAG:     <<Const2:j\d+>>  LongConstant 2
+  // CHECK-DAG:     <<Add:j\d+>>     Add [ <<Const1>> <<Const2>> ]
+  // CHECK-DAG:                      Return [ <<Add>> ]
 
   // CHECK-START: long Main.LongAddition() constant_folding (after)
-  // CHECK-DAG:     [[Const3:j\d+]]  LongConstant 3
-  // CHECK-DAG:                      Return [ [[Const3]] ]
+  // CHECK-DAG:     <<Const3:j\d+>>  LongConstant 3
+  // CHECK-DAG:                      Return [ <<Const3>> ]
 
   public static long LongAddition() {
     long a, b, c;
@@ -173,14 +173,14 @@
    */
 
   // CHECK-START: long Main.LongSubtraction() constant_folding (before)
-  // CHECK-DAG:     [[Const6:j\d+]]  LongConstant 6
-  // CHECK-DAG:     [[Const2:j\d+]]  LongConstant 2
-  // CHECK-DAG:     [[Sub:j\d+]]     Sub [ [[Const6]] [[Const2]] ]
-  // CHECK-DAG:                      Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Const6:j\d+>>  LongConstant 6
+  // CHECK-DAG:     <<Const2:j\d+>>  LongConstant 2
+  // CHECK-DAG:     <<Sub:j\d+>>     Sub [ <<Const6>> <<Const2>> ]
+  // CHECK-DAG:                      Return [ <<Sub>> ]
 
   // CHECK-START: long Main.LongSubtraction() constant_folding (after)
-  // CHECK-DAG:     [[Const4:j\d+]]  LongConstant 4
-  // CHECK-DAG:                      Return [ [[Const4]] ]
+  // CHECK-DAG:     <<Const4:j\d+>>  LongConstant 4
+  // CHECK-DAG:                      Return [ <<Const4>> ]
 
   public static long LongSubtraction() {
     long a, b, c;
@@ -195,14 +195,14 @@
    */
 
   // CHECK-START: int Main.StaticCondition() constant_folding (before)
-  // CHECK-DAG:     [[Const7:i\d+]]  IntConstant 7
-  // CHECK-DAG:     [[Const2:i\d+]]  IntConstant 2
-  // CHECK-DAG:     [[Cond:z\d+]]    GreaterThanOrEqual [ [[Const7]] [[Const2]] ]
-  // CHECK-DAG:                      If [ [[Cond]] ]
+  // CHECK-DAG:     <<Const7:i\d+>>  IntConstant 7
+  // CHECK-DAG:     <<Const2:i\d+>>  IntConstant 2
+  // CHECK-DAG:     <<Cond:z\d+>>    GreaterThanOrEqual [ <<Const7>> <<Const2>> ]
+  // CHECK-DAG:                      If [ <<Cond>> ]
 
   // CHECK-START: int Main.StaticCondition() constant_folding (after)
-  // CHECK-DAG:     [[Const1:i\d+]]  IntConstant 1
-  // CHECK-DAG:                      If [ [[Const1]] ]
+  // CHECK-DAG:     <<Const1:i\d+>>  IntConstant 1
+  // CHECK-DAG:                      If [ <<Const1>> ]
 
   public static int StaticCondition() {
     int a, b, c;
@@ -225,18 +225,18 @@
    */
 
   // CHECK-START: int Main.JumpsAndConditionals(boolean) constant_folding (before)
-  // CHECK-DAG:     [[Const2:i\d+]]  IntConstant 2
-  // CHECK-DAG:     [[Const5:i\d+]]  IntConstant 5
-  // CHECK-DAG:     [[Add:i\d+]]     Add [ [[Const5]] [[Const2]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]     Sub [ [[Const5]] [[Const2]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]     Phi [ [[Add]] [[Sub]] ]
-  // CHECK-DAG:                      Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Const2:i\d+>>  IntConstant 2
+  // CHECK-DAG:     <<Const5:i\d+>>  IntConstant 5
+  // CHECK-DAG:     <<Add:i\d+>>     Add [ <<Const5>> <<Const2>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>     Sub [ <<Const5>> <<Const2>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>     Phi [ <<Add>> <<Sub>> ]
+  // CHECK-DAG:                      Return [ <<Phi>> ]
 
   // CHECK-START: int Main.JumpsAndConditionals(boolean) constant_folding (after)
-  // CHECK-DAG:     [[Const3:i\d+]]  IntConstant 3
-  // CHECK-DAG:     [[Const7:i\d+]]  IntConstant 7
-  // CHECK-DAG:     [[Phi:i\d+]]     Phi [ [[Const7]] [[Const3]] ]
-  // CHECK-DAG:                      Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Const3:i\d+>>  IntConstant 3
+  // CHECK-DAG:     <<Const7:i\d+>>  IntConstant 7
+  // CHECK-DAG:     <<Phi:i\d+>>     Phi [ <<Const7>> <<Const3>> ]
+  // CHECK-DAG:                      Return [ <<Phi>> ]
 
   public static int JumpsAndConditionals(boolean cond) {
     int a, b, c;
@@ -254,192 +254,192 @@
    */
 
   // CHECK-START: int Main.And0(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[And:i\d+]]      And [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[And]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<And:i\d+>>      And [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<And>> ]
 
   // CHECK-START: int Main.And0(int) constant_folding (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       And
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int And0(int arg) {
     return arg & 0;
   }
 
   // CHECK-START: long Main.Mul0(long) constant_folding (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
-  // CHECK-DAG:     [[Mul:j\d+]]      Mul [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Mul]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
+  // CHECK-DAG:     <<Mul:j\d+>>      Mul [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Mul>> ]
 
   // CHECK-START: long Main.Mul0(long) constant_folding (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
   // CHECK-NOT:                       Mul
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static long Mul0(long arg) {
     return arg * 0;
   }
 
   // CHECK-START: int Main.OrAllOnes(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstF:i\d+]]   IntConstant -1
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Arg]] [[ConstF]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstF:i\d+>>   IntConstant -1
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Arg>> <<ConstF>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.OrAllOnes(int) constant_folding (after)
-  // CHECK-DAG:     [[ConstF:i\d+]]   IntConstant -1
+  // CHECK-DAG:     <<ConstF:i\d+>>   IntConstant -1
   // CHECK-NOT:                       Or
-  // CHECK-DAG:                       Return [ [[ConstF]] ]
+  // CHECK-DAG:                       Return [ <<ConstF>> ]
 
   public static int OrAllOnes(int arg) {
     return arg | -1;
   }
 
   // CHECK-START: long Main.Rem0(long) constant_folding (before)
-  // CHECK-DAG:     [[Arg:j\d+]]           ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]        LongConstant 0
-  // CHECK-DAG:     [[DivZeroCheck:j\d+]]  DivZeroCheck [ [[Arg]] ]
-  // CHECK-DAG:     [[Rem:j\d+]]           Rem [ [[Const0]] [[DivZeroCheck]] ]
-  // CHECK-DAG:                            Return [ [[Rem]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>           ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>        LongConstant 0
+  // CHECK-DAG:     <<DivZeroCheck:j\d+>>  DivZeroCheck [ <<Arg>> ]
+  // CHECK-DAG:     <<Rem:j\d+>>           Rem [ <<Const0>> <<DivZeroCheck>> ]
+  // CHECK-DAG:                            Return [ <<Rem>> ]
 
   // CHECK-START: long Main.Rem0(long) constant_folding (after)
-  // CHECK-DAG:     [[Const0:j\d+]]        LongConstant 0
+  // CHECK-DAG:     <<Const0:j\d+>>        LongConstant 0
   // CHECK-NOT:                            Rem
-  // CHECK-DAG:                            Return [ [[Const0]] ]
+  // CHECK-DAG:                            Return [ <<Const0>> ]
 
   public static long Rem0(long arg) {
     return 0 % arg;
   }
 
   // CHECK-START: int Main.Rem1(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Rem:i\d+]]      Rem [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                       Return [ [[Rem]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Rem:i\d+>>      Rem [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                       Return [ <<Rem>> ]
 
   // CHECK-START: int Main.Rem1(int) constant_folding (after)
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       Rem
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int Rem1(int arg) {
     return arg % 1;
   }
 
   // CHECK-START: long Main.RemN1(long) constant_folding (before)
-  // CHECK-DAG:     [[Arg:j\d+]]           ParameterValue
-  // CHECK-DAG:     [[ConstN1:j\d+]]       LongConstant -1
-  // CHECK-DAG:     [[DivZeroCheck:j\d+]]  DivZeroCheck [ [[Arg]] ]
-  // CHECK-DAG:     [[Rem:j\d+]]           Rem [ [[Arg]] [[DivZeroCheck]] ]
-  // CHECK-DAG:                            Return [ [[Rem]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>           ParameterValue
+  // CHECK-DAG:     <<ConstN1:j\d+>>       LongConstant -1
+  // CHECK-DAG:     <<DivZeroCheck:j\d+>>  DivZeroCheck [ <<Arg>> ]
+  // CHECK-DAG:     <<Rem:j\d+>>           Rem [ <<Arg>> <<DivZeroCheck>> ]
+  // CHECK-DAG:                            Return [ <<Rem>> ]
 
   // CHECK-START: long Main.RemN1(long) constant_folding (after)
-  // CHECK-DAG:     [[Const0:j\d+]]        LongConstant 0
+  // CHECK-DAG:     <<Const0:j\d+>>        LongConstant 0
   // CHECK-NOT:                            Rem
-  // CHECK-DAG:                            Return [ [[Const0]] ]
+  // CHECK-DAG:                            Return [ <<Const0>> ]
 
   public static long RemN1(long arg) {
     return arg % -1;
   }
 
   // CHECK-START: int Main.Shl0(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Shl:i\d+]]      Shl [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Shl]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Shl:i\d+>>      Shl [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Shl>> ]
 
   // CHECK-START: int Main.Shl0(int) constant_folding (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       Shl
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int Shl0(int arg) {
     return 0 << arg;
   }
 
   // CHECK-START: long Main.Shr0(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
-  // CHECK-DAG:     [[Shr:j\d+]]      Shr [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Shr]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
+  // CHECK-DAG:     <<Shr:j\d+>>      Shr [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Shr>> ]
 
   // CHECK-START: long Main.Shr0(int) constant_folding (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
   // CHECK-NOT:                       Shr
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static long Shr0(int arg) {
     return (long)0 >> arg;
   }
 
   // CHECK-START: long Main.SubSameLong(long) constant_folding (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Sub:j\d+]]      Sub [ [[Arg]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Sub:j\d+>>      Sub [ <<Arg>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: long Main.SubSameLong(long) constant_folding (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
   // CHECK-NOT:                       Sub
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static long SubSameLong(long arg) {
     return arg - arg;
   }
 
   // CHECK-START: int Main.UShr0(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[UShr:i\d+]]     UShr [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[UShr]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<UShr:i\d+>>     UShr [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<UShr>> ]
 
   // CHECK-START: int Main.UShr0(int) constant_folding (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       UShr
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int UShr0(int arg) {
     return 0 >>> arg;
   }
 
   // CHECK-START: int Main.XorSameInt(int) constant_folding (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Xor:i\d+]]      Xor [ [[Arg]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Xor]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Xor:i\d+>>      Xor [ <<Arg>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Xor>> ]
 
   // CHECK-START: int Main.XorSameInt(int) constant_folding (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       Xor
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int XorSameInt(int arg) {
     return arg ^ arg;
   }
 
   // CHECK-START: boolean Main.CmpFloatGreaterThanNaN(float) constant_folding (before)
-  // CHECK-DAG:     [[Arg:f\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstNan:f\d+]] FloatConstant nan
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:f\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstNan:f\d+>> FloatConstant nan
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-DAG:                       IntConstant 1
-  // CHECK-DAG:     [[Cmp:i\d+]]      Compare [ [[Arg]] [[ConstNan]] ]
-  // CHECK-DAG:     [[Le:z\d+]]       LessThanOrEqual [ [[Cmp]] [[Const0]] ]
-  // CHECK-DAG:                       If [ [[Le]] ]
+  // CHECK-DAG:     <<Cmp:i\d+>>      Compare [ <<Arg>> <<ConstNan>> ]
+  // CHECK-DAG:     <<Le:z\d+>>       LessThanOrEqual [ <<Cmp>> <<Const0>> ]
+  // CHECK-DAG:                       If [ <<Le>> ]
 
   // CHECK-START: boolean Main.CmpFloatGreaterThanNaN(float) constant_folding (after)
   // CHECK-DAG:                       ParameterValue
   // CHECK-DAG:                       FloatConstant nan
   // CHECK-DAG:                       IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:                       If [ [[Const1]] ]
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:                       If [ <<Const1>> ]
 
   // CHECK-START: boolean Main.CmpFloatGreaterThanNaN(float) constant_folding (after)
   // CHECK-NOT:                       Compare
@@ -450,20 +450,20 @@
   }
 
   // CHECK-START: boolean Main.CmpDoubleLessThanNaN(double) constant_folding (before)
-  // CHECK-DAG:     [[Arg:d\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstNan:d\d+]] DoubleConstant nan
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
+  // CHECK-DAG:     <<Arg:d\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstNan:d\d+>> DoubleConstant nan
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
   // CHECK-DAG:                       IntConstant 1
-  // CHECK-DAG:     [[Cmp:i\d+]]      Compare [ [[Arg]] [[ConstNan]] ]
-  // CHECK-DAG:     [[Ge:z\d+]]       GreaterThanOrEqual [ [[Cmp]] [[Const0]] ]
-  // CHECK-DAG:                       If [ [[Ge]] ]
+  // CHECK-DAG:     <<Cmp:i\d+>>      Compare [ <<Arg>> <<ConstNan>> ]
+  // CHECK-DAG:     <<Ge:z\d+>>       GreaterThanOrEqual [ <<Cmp>> <<Const0>> ]
+  // CHECK-DAG:                       If [ <<Ge>> ]
 
   // CHECK-START: boolean Main.CmpDoubleLessThanNaN(double) constant_folding (after)
   // CHECK-DAG:                       ParameterValue
   // CHECK-DAG:                       DoubleConstant nan
   // CHECK-DAG:                       IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:                       If [ [[Const1]] ]
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:                       If [ <<Const1>> ]
 
   // CHECK-START: boolean Main.CmpDoubleLessThanNaN(double) constant_folding (after)
   // CHECK-NOT:                       Compare
@@ -474,13 +474,13 @@
   }
 
   // CHECK-START: int Main.ReturnInt33() constant_folding (before)
-  // CHECK-DAG:     [[Const33:j\d+]]  LongConstant 33
-  // CHECK-DAG:     [[Convert:i\d+]]  TypeConversion [[Const33]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const33:j\d+>>  LongConstant 33
+  // CHECK-DAG:     <<Convert:i\d+>>  TypeConversion <<Const33>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: int Main.ReturnInt33() constant_folding (after)
-  // CHECK-DAG:     [[Const33:i\d+]]  IntConstant 33
-  // CHECK-DAG:                       Return [ [[Const33]] ]
+  // CHECK-DAG:     <<Const33:i\d+>>  IntConstant 33
+  // CHECK-DAG:                       Return [ <<Const33>> ]
 
   public static int ReturnInt33() {
     long imm = 33L;
@@ -488,13 +488,13 @@
   }
 
   // CHECK-START: int Main.ReturnIntMax() constant_folding (before)
-  // CHECK-DAG:     [[ConstMax:f\d+]] FloatConstant 1e+34
-  // CHECK-DAG:     [[Convert:i\d+]]  TypeConversion [[ConstMax]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<ConstMax:f\d+>> FloatConstant 1e+34
+  // CHECK-DAG:     <<Convert:i\d+>>  TypeConversion <<ConstMax>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: int Main.ReturnIntMax() constant_folding (after)
-  // CHECK-DAG:     [[ConstMax:i\d+]] IntConstant 2147483647
-  // CHECK-DAG:                       Return [ [[ConstMax]] ]
+  // CHECK-DAG:     <<ConstMax:i\d+>> IntConstant 2147483647
+  // CHECK-DAG:                       Return [ <<ConstMax>> ]
 
   public static int ReturnIntMax() {
     float imm = 1.0e34f;
@@ -502,13 +502,13 @@
   }
 
   // CHECK-START: int Main.ReturnInt0() constant_folding (before)
-  // CHECK-DAG:     [[ConstNaN:d\d+]] DoubleConstant nan
-  // CHECK-DAG:     [[Convert:i\d+]]  TypeConversion [[ConstNaN]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<ConstNaN:d\d+>> DoubleConstant nan
+  // CHECK-DAG:     <<Convert:i\d+>>  TypeConversion <<ConstNaN>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: int Main.ReturnInt0() constant_folding (after)
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static int ReturnInt0() {
     double imm = Double.NaN;
@@ -516,13 +516,13 @@
   }
 
   // CHECK-START: long Main.ReturnLong33() constant_folding (before)
-  // CHECK-DAG:     [[Const33:i\d+]]  IntConstant 33
-  // CHECK-DAG:     [[Convert:j\d+]]  TypeConversion [[Const33]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const33:i\d+>>  IntConstant 33
+  // CHECK-DAG:     <<Convert:j\d+>>  TypeConversion <<Const33>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: long Main.ReturnLong33() constant_folding (after)
-  // CHECK-DAG:     [[Const33:j\d+]]  LongConstant 33
-  // CHECK-DAG:                       Return [ [[Const33]] ]
+  // CHECK-DAG:     <<Const33:j\d+>>  LongConstant 33
+  // CHECK-DAG:                       Return [ <<Const33>> ]
 
   public static long ReturnLong33() {
     int imm = 33;
@@ -530,13 +530,13 @@
   }
 
   // CHECK-START: long Main.ReturnLong34() constant_folding (before)
-  // CHECK-DAG:     [[Const34:f\d+]]  FloatConstant 34
-  // CHECK-DAG:     [[Convert:j\d+]]  TypeConversion [[Const34]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const34:f\d+>>  FloatConstant 34
+  // CHECK-DAG:     <<Convert:j\d+>>  TypeConversion <<Const34>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: long Main.ReturnLong34() constant_folding (after)
-  // CHECK-DAG:     [[Const34:j\d+]]  LongConstant 34
-  // CHECK-DAG:                       Return [ [[Const34]] ]
+  // CHECK-DAG:     <<Const34:j\d+>>  LongConstant 34
+  // CHECK-DAG:                       Return [ <<Const34>> ]
 
   public static long ReturnLong34() {
     float imm = 34.0f;
@@ -544,13 +544,13 @@
   }
 
   // CHECK-START: long Main.ReturnLong0() constant_folding (before)
-  // CHECK-DAG:     [[ConstNaN:d\d+]] DoubleConstant nan
-  // CHECK-DAG:     [[Convert:j\d+]]  TypeConversion [[ConstNaN]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<ConstNaN:d\d+>> DoubleConstant nan
+  // CHECK-DAG:     <<Convert:j\d+>>  TypeConversion <<ConstNaN>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: long Main.ReturnLong0() constant_folding (after)
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
-  // CHECK-DAG:                       Return [ [[Const0]] ]
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
+  // CHECK-DAG:                       Return [ <<Const0>> ]
 
   public static long ReturnLong0() {
     double imm = -Double.NaN;
@@ -558,13 +558,13 @@
   }
 
   // CHECK-START: float Main.ReturnFloat33() constant_folding (before)
-  // CHECK-DAG:     [[Const33:i\d+]]  IntConstant 33
-  // CHECK-DAG:     [[Convert:f\d+]]  TypeConversion [[Const33]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const33:i\d+>>  IntConstant 33
+  // CHECK-DAG:     <<Convert:f\d+>>  TypeConversion <<Const33>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: float Main.ReturnFloat33() constant_folding (after)
-  // CHECK-DAG:     [[Const33:f\d+]]  FloatConstant 33
-  // CHECK-DAG:                       Return [ [[Const33]] ]
+  // CHECK-DAG:     <<Const33:f\d+>>  FloatConstant 33
+  // CHECK-DAG:                       Return [ <<Const33>> ]
 
   public static float ReturnFloat33() {
     int imm = 33;
@@ -572,13 +572,13 @@
   }
 
   // CHECK-START: float Main.ReturnFloat34() constant_folding (before)
-  // CHECK-DAG:     [[Const34:j\d+]]  LongConstant 34
-  // CHECK-DAG:     [[Convert:f\d+]]  TypeConversion [[Const34]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const34:j\d+>>  LongConstant 34
+  // CHECK-DAG:     <<Convert:f\d+>>  TypeConversion <<Const34>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: float Main.ReturnFloat34() constant_folding (after)
-  // CHECK-DAG:     [[Const34:f\d+]]  FloatConstant 34
-  // CHECK-DAG:                       Return [ [[Const34]] ]
+  // CHECK-DAG:     <<Const34:f\d+>>  FloatConstant 34
+  // CHECK-DAG:                       Return [ <<Const34>> ]
 
   public static float ReturnFloat34() {
     long imm = 34L;
@@ -586,13 +586,13 @@
   }
 
   // CHECK-START: float Main.ReturnFloat99P25() constant_folding (before)
-  // CHECK-DAG:     [[Const:d\d+]]    DoubleConstant 99.25
-  // CHECK-DAG:     [[Convert:f\d+]]  TypeConversion [[Const]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const:d\d+>>    DoubleConstant 99.25
+  // CHECK-DAG:     <<Convert:f\d+>>  TypeConversion <<Const>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: float Main.ReturnFloat99P25() constant_folding (after)
-  // CHECK-DAG:     [[Const:f\d+]]    FloatConstant 99.25
-  // CHECK-DAG:                       Return [ [[Const]] ]
+  // CHECK-DAG:     <<Const:f\d+>>    FloatConstant 99.25
+  // CHECK-DAG:                       Return [ <<Const>> ]
 
   public static float ReturnFloat99P25() {
     double imm = 99.25;
@@ -600,13 +600,13 @@
   }
 
   // CHECK-START: double Main.ReturnDouble33() constant_folding (before)
-  // CHECK-DAG:     [[Const33:i\d+]]  IntConstant 33
-  // CHECK-DAG:     [[Convert:d\d+]]  TypeConversion [[Const33]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const33:i\d+>>  IntConstant 33
+  // CHECK-DAG:     <<Convert:d\d+>>  TypeConversion <<Const33>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: double Main.ReturnDouble33() constant_folding (after)
-  // CHECK-DAG:     [[Const33:d\d+]]  DoubleConstant 33
-  // CHECK-DAG:                       Return [ [[Const33]] ]
+  // CHECK-DAG:     <<Const33:d\d+>>  DoubleConstant 33
+  // CHECK-DAG:                       Return [ <<Const33>> ]
 
   public static double ReturnDouble33() {
     int imm = 33;
@@ -614,13 +614,13 @@
   }
 
   // CHECK-START: double Main.ReturnDouble34() constant_folding (before)
-  // CHECK-DAG:     [[Const34:j\d+]]  LongConstant 34
-  // CHECK-DAG:     [[Convert:d\d+]]  TypeConversion [[Const34]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const34:j\d+>>  LongConstant 34
+  // CHECK-DAG:     <<Convert:d\d+>>  TypeConversion <<Const34>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: double Main.ReturnDouble34() constant_folding (after)
-  // CHECK-DAG:     [[Const34:d\d+]]  DoubleConstant 34
-  // CHECK-DAG:                       Return [ [[Const34]] ]
+  // CHECK-DAG:     <<Const34:d\d+>>  DoubleConstant 34
+  // CHECK-DAG:                       Return [ <<Const34>> ]
 
   public static double ReturnDouble34() {
     long imm = 34L;
@@ -628,13 +628,13 @@
   }
 
   // CHECK-START: double Main.ReturnDouble99P25() constant_folding (before)
-  // CHECK-DAG:     [[Const:f\d+]]    FloatConstant 99.25
-  // CHECK-DAG:     [[Convert:d\d+]]  TypeConversion [[Const]]
-  // CHECK-DAG:                       Return [ [[Convert]] ]
+  // CHECK-DAG:     <<Const:f\d+>>    FloatConstant 99.25
+  // CHECK-DAG:     <<Convert:d\d+>>  TypeConversion <<Const>>
+  // CHECK-DAG:                       Return [ <<Convert>> ]
 
   // CHECK-START: double Main.ReturnDouble99P25() constant_folding (after)
-  // CHECK-DAG:     [[Const:d\d+]]    DoubleConstant 99.25
-  // CHECK-DAG:                       Return [ [[Const]] ]
+  // CHECK-DAG:     <<Const:d\d+>>    DoubleConstant 99.25
+  // CHECK-DAG:                       Return [ <<Const>> ]
 
   public static double ReturnDouble99P25() {
     float imm = 99.25f;
diff --git a/test/445-checker-licm/src/Main.java b/test/445-checker-licm/src/Main.java
index c7a5f04..ce2ab9a 100644
--- a/test/445-checker-licm/src/Main.java
+++ b/test/445-checker-licm/src/Main.java
@@ -88,16 +88,16 @@
   }
 
   // CHECK-START: int Main.arrayLength(int[]) licm (before)
-  // CHECK-DAG: [[NullCheck:l\d+]] NullCheck loop:{{B\d+}}
-  // CHECK-DAG:                    ArrayLength [ [[NullCheck]] ] loop:{{B\d+}}
+  // CHECK-DAG: <<NullCheck:l\d+>> NullCheck loop:{{B\d+}}
+  // CHECK-DAG:                    ArrayLength [ <<NullCheck>> ] loop:{{B\d+}}
 
   // CHECK-START: int Main.arrayLength(int[]) licm (after)
   // CHECK-NOT:                    NullCheck loop:{{B\d+}}
   // CHECK-NOT:                    ArrayLength loop:{{B\d+}}
 
   // CHECK-START: int Main.arrayLength(int[]) licm (after)
-  // CHECK-DAG: [[NullCheck:l\d+]] NullCheck loop:none
-  // CHECK-DAG:                    ArrayLength [ [[NullCheck]] ] loop:none
+  // CHECK-DAG: <<NullCheck:l\d+>> NullCheck loop:none
+  // CHECK-DAG:                    ArrayLength [ <<NullCheck>> ] loop:none
 
   public static int arrayLength(int[] array) {
     int result = 0;
diff --git a/test/446-checker-inliner2/src/Main.java b/test/446-checker-inliner2/src/Main.java
index ecf071e..5d4ddf8 100644
--- a/test/446-checker-inliner2/src/Main.java
+++ b/test/446-checker-inliner2/src/Main.java
@@ -17,15 +17,15 @@
 public class Main {
 
   // CHECK-START: int Main.inlineInstanceCall(Main) inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineInstanceCall(Main) inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: int Main.inlineInstanceCall(Main) inliner (after)
-  // CHECK-DAG:     [[Field:i\d+]]   InstanceFieldGet
-  // CHECK-DAG:                      Return [ [[Field]] ]
+  // CHECK-DAG:     <<Field:i\d+>>   InstanceFieldGet
+  // CHECK-DAG:                      Return [ <<Field>> ]
 
   public static int inlineInstanceCall(Main m) {
     return m.foo();
@@ -38,15 +38,15 @@
   int field = 42;
 
   // CHECK-START: int Main.inlineNestedCall() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineNestedCall() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: int Main.inlineNestedCall() inliner (after)
-  // CHECK-DAG:     [[Const38:i\d+]] IntConstant 38
-  // CHECK-DAG:                      Return [ [[Const38]] ]
+  // CHECK-DAG:     <<Const38:i\d+>> IntConstant 38
+  // CHECK-DAG:                      Return [ <<Const38>> ]
 
   public static int inlineNestedCall() {
     return nestedCall();
diff --git a/test/447-checker-inliner3/src/Main.java b/test/447-checker-inliner3/src/Main.java
index db4b236..34faafa 100644
--- a/test/447-checker-inliner3/src/Main.java
+++ b/test/447-checker-inliner3/src/Main.java
@@ -17,8 +17,8 @@
 public class Main {
 
   // CHECK-START: int Main.inlineIfThenElse() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineIfThenElse() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
diff --git a/test/458-checker-instruction-simplification/src/Main.java b/test/458-checker-instruction-simplification/src/Main.java
index efb7b83..ebad8e5 100644
--- a/test/458-checker-instruction-simplification/src/Main.java
+++ b/test/458-checker-instruction-simplification/src/Main.java
@@ -51,14 +51,14 @@
    */
 
   // CHECK-START: long Main.Add0(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]  LongConstant 0
-  // CHECK-DAG:     [[Add:j\d+]]     Add [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                      Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>  LongConstant 0
+  // CHECK-DAG:     <<Add:j\d+>>     Add [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                      Return [ <<Add>> ]
 
   // CHECK-START: long Main.Add0(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: long Main.Add0(long) instruction_simplifier (after)
   // CHECK-NOT:                        Add
@@ -68,14 +68,14 @@
   }
 
   // CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[ConstF:i\d+]]  IntConstant -1
-  // CHECK-DAG:     [[And:i\d+]]     And [ [[Arg]] [[ConstF]] ]
-  // CHECK-DAG:                      Return [ [[And]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<ConstF:i\d+>>  IntConstant -1
+  // CHECK-DAG:     <<And:i\d+>>     And [ <<Arg>> <<ConstF>> ]
+  // CHECK-DAG:                      Return [ <<And>> ]
 
   // CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (after)
   // CHECK-NOT:                      And
@@ -85,14 +85,14 @@
   }
 
   // CHECK-START: long Main.Div1(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Const1:j\d+]]  LongConstant 1
-  // CHECK-DAG:     [[Div:j\d+]]     Div [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                      Return [ [[Div]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Const1:j\d+>>  LongConstant 1
+  // CHECK-DAG:     <<Div:j\d+>>     Div [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                      Return [ <<Div>> ]
 
   // CHECK-START: long Main.Div1(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: long Main.Div1(long) instruction_simplifier (after)
   // CHECK-NOT:                      Div
@@ -102,15 +102,15 @@
   }
 
   // CHECK-START: int Main.DivN1(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstN1:i\d+]]  IntConstant -1
-  // CHECK-DAG:     [[Div:i\d+]]      Div [ [[Arg]] [[ConstN1]] ]
-  // CHECK-DAG:                       Return [ [[Div]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstN1:i\d+>>  IntConstant -1
+  // CHECK-DAG:     <<Div:i\d+>>      Div [ <<Arg>> <<ConstN1>> ]
+  // CHECK-DAG:                       Return [ <<Div>> ]
 
   // CHECK-START: int Main.DivN1(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.DivN1(int) instruction_simplifier (after)
   // CHECK-NOT:                       Div
@@ -120,14 +120,14 @@
   }
 
   // CHECK-START: long Main.Mul1(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Const1:j\d+]]  LongConstant 1
-  // CHECK-DAG:     [[Mul:j\d+]]     Mul [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                      Return [ [[Mul]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Const1:j\d+>>  LongConstant 1
+  // CHECK-DAG:     <<Mul:j\d+>>     Mul [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                      Return [ <<Mul>> ]
 
   // CHECK-START: long Main.Mul1(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: long Main.Mul1(long) instruction_simplifier (after)
   // CHECK-NOT:                       Mul
@@ -137,15 +137,15 @@
   }
 
   // CHECK-START: int Main.MulN1(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstN1:i\d+]]  IntConstant -1
-  // CHECK-DAG:     [[Mul:i\d+]]      Mul [ [[Arg]] [[ConstN1]] ]
-  // CHECK-DAG:                       Return [ [[Mul]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstN1:i\d+>>  IntConstant -1
+  // CHECK-DAG:     <<Mul:i\d+>>      Mul [ <<Arg>> <<ConstN1>> ]
+  // CHECK-DAG:                       Return [ <<Mul>> ]
 
   // CHECK-START: int Main.MulN1(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.MulN1(int) instruction_simplifier (after)
   // CHECK-NOT:                       Mul
@@ -155,16 +155,16 @@
   }
 
   // CHECK-START: long Main.MulPowerOfTwo128(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]       ParameterValue
-  // CHECK-DAG:     [[Const128:j\d+]]  LongConstant 128
-  // CHECK-DAG:     [[Mul:j\d+]]       Mul [ [[Arg]] [[Const128]] ]
-  // CHECK-DAG:                        Return [ [[Mul]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
+  // CHECK-DAG:     <<Const128:j\d+>>  LongConstant 128
+  // CHECK-DAG:     <<Mul:j\d+>>       Mul [ <<Arg>> <<Const128>> ]
+  // CHECK-DAG:                        Return [ <<Mul>> ]
 
   // CHECK-START: long Main.MulPowerOfTwo128(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]       ParameterValue
-  // CHECK-DAG:     [[Const7:i\d+]]    IntConstant 7
-  // CHECK-DAG:     [[Shl:j\d+]]       Shl [ [[Arg]] [[Const7]] ]
-  // CHECK-DAG:                        Return [ [[Shl]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
+  // CHECK-DAG:     <<Const7:i\d+>>    IntConstant 7
+  // CHECK-DAG:     <<Shl:j\d+>>       Shl [ <<Arg>> <<Const7>> ]
+  // CHECK-DAG:                        Return [ <<Shl>> ]
 
   // CHECK-START: long Main.MulPowerOfTwo128(long) instruction_simplifier (after)
   // CHECK-NOT:                        Mul
@@ -174,14 +174,14 @@
   }
 
   // CHECK-START: int Main.Or0(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.Or0(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: int Main.Or0(int) instruction_simplifier (after)
   // CHECK-NOT:                       Or
@@ -191,13 +191,13 @@
   }
 
   // CHECK-START: long Main.OrSame(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]       ParameterValue
-  // CHECK-DAG:     [[Or:j\d+]]        Or [ [[Arg]] [[Arg]] ]
-  // CHECK-DAG:                        Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
+  // CHECK-DAG:     <<Or:j\d+>>        Or [ <<Arg>> <<Arg>> ]
+  // CHECK-DAG:                        Return [ <<Or>> ]
 
   // CHECK-START: long Main.OrSame(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]       ParameterValue
-  // CHECK-DAG:                        Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
+  // CHECK-DAG:                        Return [ <<Arg>> ]
 
   // CHECK-START: long Main.OrSame(long) instruction_simplifier (after)
   // CHECK-NOT:                        Or
@@ -207,14 +207,14 @@
   }
 
   // CHECK-START: int Main.Shl0(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Shl:i\d+]]      Shl [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Shl]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Shl:i\d+>>      Shl [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Shl>> ]
 
   // CHECK-START: int Main.Shl0(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: int Main.Shl0(int) instruction_simplifier (after)
   // CHECK-NOT:                       Shl
@@ -224,15 +224,15 @@
   }
 
   // CHECK-START: int Main.Shl1(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Shl:i\d+]]      Shl [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                       Return [ [[Shl]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Shl:i\d+>>      Shl [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                       Return [ <<Shl>> ]
 
   // CHECK-START: int Main.Shl1(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Arg]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Arg>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: int Main.Shl1(int) instruction_simplifier (after)
   // CHECK-NOT:                       Shl
@@ -242,14 +242,14 @@
   }
 
   // CHECK-START: long Main.Shr0(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Shr:j\d+]]      Shr [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Shr]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Shr:j\d+>>      Shr [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Shr>> ]
 
   // CHECK-START: long Main.Shr0(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.Shr0(long) instruction_simplifier (after)
   // CHECK-NOT:                       Shr
@@ -259,14 +259,14 @@
   }
 
   // CHECK-START: long Main.Sub0(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
-  // CHECK-DAG:     [[Sub:j\d+]]      Sub [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
+  // CHECK-DAG:     <<Sub:j\d+>>      Sub [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: long Main.Sub0(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.Sub0(long) instruction_simplifier (after)
   // CHECK-NOT:                       Sub
@@ -276,15 +276,15 @@
   }
 
   // CHECK-START: int Main.SubAliasNeg(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: int Main.SubAliasNeg(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.SubAliasNeg(int) instruction_simplifier (after)
   // CHECK-NOT:                       Sub
@@ -294,14 +294,14 @@
   }
 
   // CHECK-START: long Main.UShr0(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[UShr:j\d+]]     UShr [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[UShr]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<UShr:j\d+>>     UShr [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<UShr>> ]
 
   // CHECK-START: long Main.UShr0(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.UShr0(long) instruction_simplifier (after)
   // CHECK-NOT:                       UShr
@@ -311,14 +311,14 @@
   }
 
   // CHECK-START: int Main.Xor0(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Xor:i\d+]]      Xor [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Xor]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Xor:i\d+>>      Xor [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Xor>> ]
 
   // CHECK-START: int Main.Xor0(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: int Main.Xor0(int) instruction_simplifier (after)
   // CHECK-NOT:                       Xor
@@ -328,15 +328,15 @@
   }
 
   // CHECK-START: int Main.XorAllOnes(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstF:i\d+]]   IntConstant -1
-  // CHECK-DAG:     [[Xor:i\d+]]      Xor [ [[Arg]] [[ConstF]] ]
-  // CHECK-DAG:                       Return [ [[Xor]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstF:i\d+>>   IntConstant -1
+  // CHECK-DAG:     <<Xor:i\d+>>      Xor [ <<Arg>> <<ConstF>> ]
+  // CHECK-DAG:                       Return [ <<Xor>> ]
 
   // CHECK-START: int Main.XorAllOnes(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Not:i\d+]]      Not [ [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Not]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Not:i\d+>>      Not [ <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Not>> ]
 
   // CHECK-START: int Main.XorAllOnes(int) instruction_simplifier (after)
   // CHECK-NOT:                       Xor
@@ -353,20 +353,20 @@
    */
 
   // CHECK-START: int Main.AddNegs1(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: int Main.AddNegs1(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
   // CHECK-NOT:                       Neg
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Arg1]] [[Arg2]] ]
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Add]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Arg1>> <<Arg2>> ]
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Add>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   public static int AddNegs1(int arg1, int arg2) {
     return -arg1 + -arg2;
@@ -384,34 +384,34 @@
    */
 
   // CHECK-START: int Main.AddNegs2(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add1:i\d+]]     Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:     [[Add2:i\d+]]     Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Add1]] [[Add2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add1:i\d+>>     Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:     <<Add2:i\d+>>     Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Add1>> <<Add2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.AddNegs2(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add1:i\d+]]     Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:     [[Add2:i\d+]]     Add [ [[Neg1]] [[Neg2]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add1:i\d+>>     Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:     <<Add2:i\d+>>     Add [ <<Neg1>> <<Neg2>> ]
   // CHECK-NOT:                       Neg
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Add1]] [[Add2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Add1>> <<Add2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.AddNegs2(int, int) GVN (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Add]] [[Add]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Add>> <<Add>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   public static int AddNegs2(int arg1, int arg2) {
     int temp1 = -arg1;
@@ -429,26 +429,26 @@
 
   // CHECK-START: long Main.AddNegs3(long, long) instruction_simplifier (before)
   // -------------- Arguments and initial negation operations.
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:j\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:j\d+]]     Neg [ [[Arg2]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:j\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:j\d+>>     Neg [ <<Arg2>> ]
   // CHECK:                           Goto
   // -------------- Loop
   // CHECK:                           SuspendCheck
-  // CHECK:         [[Add:j\d+]]      Add [ [[Neg1]] [[Neg2]] ]
+  // CHECK:         <<Add:j\d+>>      Add [ <<Neg1>> <<Neg2>> ]
   // CHECK:                           Goto
 
   // CHECK-START: long Main.AddNegs3(long, long) instruction_simplifier (after)
   // -------------- Arguments and initial negation operations.
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg1:j\d+]]     Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Neg2:j\d+]]     Neg [ [[Arg2]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg1:j\d+>>     Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Neg2:j\d+>>     Neg [ <<Arg2>> ]
   // CHECK:                           Goto
   // -------------- Loop
   // CHECK:                           SuspendCheck
-  // CHECK:         [[Add:j\d+]]      Add [ [[Neg1]] [[Neg2]] ]
+  // CHECK:         <<Add:j\d+>>      Add [ <<Neg1>> <<Neg2>> ]
   // CHECK-NOT:                       Neg
   // CHECK:                           Goto
 
@@ -469,17 +469,17 @@
    */
 
   // CHECK-START: long Main.AddNeg1(long, long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Add:j\d+]]      Add [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Add:j\d+>>      Add [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: long Main.AddNeg1(long, long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Sub:j\d+]]      Sub [ [[Arg2]] [[Arg1]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Sub:j\d+>>      Sub [ <<Arg2>> <<Arg1>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: long Main.AddNeg1(long, long) instruction_simplifier (after)
   // CHECK-NOT:                       Neg
@@ -499,22 +499,22 @@
    */
 
   // CHECK-START: long Main.AddNeg2(long, long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add1:j\d+]]     Add [ [[Arg1]] [[Neg]] ]
-  // CHECK-DAG:     [[Add2:j\d+]]     Add [ [[Arg1]] [[Neg]] ]
-  // CHECK-DAG:     [[Res:j\d+]]      Or [ [[Add1]] [[Add2]] ]
-  // CHECK-DAG:                       Return [ [[Res]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add1:j\d+>>     Add [ <<Arg1>> <<Neg>> ]
+  // CHECK-DAG:     <<Add2:j\d+>>     Add [ <<Arg1>> <<Neg>> ]
+  // CHECK-DAG:     <<Res:j\d+>>      Or [ <<Add1>> <<Add2>> ]
+  // CHECK-DAG:                       Return [ <<Res>> ]
 
   // CHECK-START: long Main.AddNeg2(long, long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg2]] ]
-  // CHECK-DAG:     [[Add1:j\d+]]     Add [ [[Arg1]] [[Neg]] ]
-  // CHECK-DAG:     [[Add2:j\d+]]     Add [ [[Arg1]] [[Neg]] ]
-  // CHECK-DAG:     [[Res:j\d+]]      Or [ [[Add1]] [[Add2]] ]
-  // CHECK-DAG:                       Return [ [[Res]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg2>> ]
+  // CHECK-DAG:     <<Add1:j\d+>>     Add [ <<Arg1>> <<Neg>> ]
+  // CHECK-DAG:     <<Add2:j\d+>>     Add [ <<Arg1>> <<Neg>> ]
+  // CHECK-DAG:     <<Res:j\d+>>      Or [ <<Add1>> <<Add2>> ]
+  // CHECK-DAG:                       Return [ <<Res>> ]
 
   // CHECK-START: long Main.AddNeg2(long, long) instruction_simplifier (after)
   // CHECK-NOT:                       Sub
@@ -530,14 +530,14 @@
    */
 
   // CHECK-START: long Main.NegNeg1(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Neg1:j\d+]]     Neg [ [[Arg]] ]
-  // CHECK-DAG:     [[Neg2:j\d+]]     Neg [ [[Neg1]] ]
-  // CHECK-DAG:                       Return [ [[Neg2]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Neg1:j\d+>>     Neg [ <<Arg>> ]
+  // CHECK-DAG:     <<Neg2:j\d+>>     Neg [ <<Neg1>> ]
+  // CHECK-DAG:                       Return [ <<Neg2>> ]
 
   // CHECK-START: long Main.NegNeg1(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.NegNeg1(long) instruction_simplifier (after)
   // CHECK-NOT:                       Neg
@@ -554,26 +554,26 @@
    */
 
   // CHECK-START: int Main.NegNeg2(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Arg]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Neg1]] ]
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Arg>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Neg1>> ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: int Main.NegNeg2(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Arg]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Arg>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: int Main.NegNeg2(int) instruction_simplifier (after)
   // CHECK-NOT:                       Neg
   // CHECK-NOT:                       Add
 
   // CHECK-START: int Main.NegNeg2(int) constant_folding_after_inlining (after)
-  // CHECK:         [[Const0:i\d+]]   IntConstant 0
+  // CHECK:         <<Const0:i\d+>>   IntConstant 0
   // CHECK-NOT:                       Neg
   // CHECK-NOT:                       Add
-  // CHECK:                           Return [ [[Const0]] ]
+  // CHECK:                           Return [ <<Const0>> ]
 
   public static int NegNeg2(int arg) {
     int temp = -arg;
@@ -588,15 +588,15 @@
    */
 
   // CHECK-START: long Main.NegNeg3(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:j\d+]]   LongConstant 0
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg]] ]
-  // CHECK-DAG:     [[Sub:j\d+]]      Sub [ [[Const0]] [[Neg]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:j\d+>>   LongConstant 0
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg>> ]
+  // CHECK-DAG:     <<Sub:j\d+>>      Sub [ <<Const0>> <<Neg>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: long Main.NegNeg3(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.NegNeg3(long) instruction_simplifier (after)
   // CHECK-NOT:                       Neg
@@ -613,17 +613,17 @@
    */
 
   // CHECK-START: int Main.NegSub1(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Arg1]] [[Arg2]] ]
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Sub]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Arg1>> <<Arg2>> ]
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Sub>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.NegSub1(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Arg2]] [[Arg1]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Arg2>> <<Arg1>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: int Main.NegSub1(int, int) instruction_simplifier (after)
   // CHECK-NOT:                       Neg
@@ -643,22 +643,22 @@
    */
 
   // CHECK-START: int Main.NegSub2(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Arg1]] [[Arg2]] ]
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Sub]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Sub]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Arg1>> <<Arg2>> ]
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Sub>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Sub>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.NegSub2(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Arg1]] [[Arg2]] ]
-  // CHECK-DAG:     [[Neg1:i\d+]]     Neg [ [[Sub]] ]
-  // CHECK-DAG:     [[Neg2:i\d+]]     Neg [ [[Sub]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Neg1]] [[Neg2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Arg1>> <<Arg2>> ]
+  // CHECK-DAG:     <<Neg1:i\d+>>     Neg [ <<Sub>> ]
+  // CHECK-DAG:     <<Neg2:i\d+>>     Neg [ <<Sub>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Neg1>> <<Neg2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   public static int NegSub2(int arg1, int arg2) {
     int temp = arg1 - arg2;
@@ -671,15 +671,15 @@
    */
 
   // CHECK-START: long Main.NotNot1(long) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstF1:j\d+]]  LongConstant -1
-  // CHECK-DAG:     [[Xor1:j\d+]]     Xor [ [[Arg]] [[ConstF1]] ]
-  // CHECK-DAG:     [[Xor2:j\d+]]     Xor [ [[Xor1]] [[ConstF1]] ]
-  // CHECK-DAG:                       Return [ [[Xor2]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstF1:j\d+>>  LongConstant -1
+  // CHECK-DAG:     <<Xor1:j\d+>>     Xor [ <<Arg>> <<ConstF1>> ]
+  // CHECK-DAG:     <<Xor2:j\d+>>     Xor [ <<Xor1>> <<ConstF1>> ]
+  // CHECK-DAG:                       Return [ <<Xor2>> ]
 
   // CHECK-START: long Main.NotNot1(long) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:j\d+]]      ParameterValue
-  // CHECK-DAG:                       Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  // CHECK-DAG:                       Return [ <<Arg>> ]
 
   // CHECK-START: long Main.NotNot1(long) instruction_simplifier (after)
   // CHECK-NOT:                       Xor
@@ -689,18 +689,18 @@
   }
 
   // CHECK-START: int Main.NotNot2(int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[ConstF1:i\d+]]  IntConstant -1
-  // CHECK-DAG:     [[Xor1:i\d+]]     Xor [ [[Arg]] [[ConstF1]] ]
-  // CHECK-DAG:     [[Xor2:i\d+]]     Xor [ [[Xor1]] [[ConstF1]] ]
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Xor1]] [[Xor2]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<ConstF1:i\d+>>  IntConstant -1
+  // CHECK-DAG:     <<Xor1:i\d+>>     Xor [ <<Arg>> <<ConstF1>> ]
+  // CHECK-DAG:     <<Xor2:i\d+>>     Xor [ <<Xor1>> <<ConstF1>> ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Xor1>> <<Xor2>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: int Main.NotNot2(int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:i\d+]]      ParameterValue
-  // CHECK-DAG:     [[Not:i\d+]]      Not [ [[Arg]] ]
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Not]] [[Arg]] ]
-  // CHECK-DAG:                       Return [ [[Add]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  // CHECK-DAG:     <<Not:i\d+>>      Not [ <<Arg>> ]
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Not>> <<Arg>> ]
+  // CHECK-DAG:                       Return [ <<Add>> ]
 
   // CHECK-START: int Main.NotNot2(int) instruction_simplifier (after)
   // CHECK-NOT:                       Xor
@@ -716,18 +716,18 @@
    */
 
   // CHECK-START: int Main.SubNeg1(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]      Sub [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:                       Return [ [[Sub]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>      Sub [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:                       Return [ <<Sub>> ]
 
   // CHECK-START: int Main.SubNeg1(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Add:i\d+]]      Add [ [[Arg1]] [[Arg2]] ]
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Add]] ]
-  // CHECK-DAG:                       Return [ [[Neg]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Add:i\d+>>      Add [ <<Arg1>> <<Arg2>> ]
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Add>> ]
+  // CHECK-DAG:                       Return [ <<Neg>> ]
 
   // CHECK-START: int Main.SubNeg1(int, int) instruction_simplifier (after)
   // CHECK-NOT:                       Sub
@@ -747,22 +747,22 @@
    */
 
   // CHECK-START: int Main.SubNeg2(int, int) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Sub1:i\d+]]     Sub [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:     [[Sub2:i\d+]]     Sub [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Sub1]] [[Sub2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Sub1:i\d+>>     Sub [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:     <<Sub2:i\d+>>     Sub [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Sub1>> <<Sub2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.SubNeg2(int, int) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg1:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:i\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:i\d+]]      Neg [ [[Arg1]] ]
-  // CHECK-DAG:     [[Sub1:i\d+]]     Sub [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:     [[Sub2:i\d+]]     Sub [ [[Neg]] [[Arg2]] ]
-  // CHECK-DAG:     [[Or:i\d+]]       Or [ [[Sub1]] [[Sub2]] ]
-  // CHECK-DAG:                       Return [ [[Or]] ]
+  // CHECK-DAG:     <<Arg1:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:i\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:i\d+>>      Neg [ <<Arg1>> ]
+  // CHECK-DAG:     <<Sub1:i\d+>>     Sub [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:     <<Sub2:i\d+>>     Sub [ <<Neg>> <<Arg2>> ]
+  // CHECK-DAG:     <<Or:i\d+>>       Or [ <<Sub1>> <<Sub2>> ]
+  // CHECK-DAG:                       Return [ <<Or>> ]
 
   // CHECK-START: int Main.SubNeg2(int, int) instruction_simplifier (after)
   // CHECK-NOT:                       Add
@@ -781,24 +781,24 @@
 
   // CHECK-START: long Main.SubNeg3(long, long) instruction_simplifier (before)
   // -------------- Arguments and initial negation operation.
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg1]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg1>> ]
   // CHECK:                           Goto
   // -------------- Loop
   // CHECK:                           SuspendCheck
-  // CHECK:         [[Sub:j\d+]]      Sub [ [[Neg]] [[Arg2]] ]
+  // CHECK:         <<Sub:j\d+>>      Sub [ <<Neg>> <<Arg2>> ]
   // CHECK:                           Goto
 
   // CHECK-START: long Main.SubNeg3(long, long) instruction_simplifier (after)
   // -------------- Arguments and initial negation operation.
-  // CHECK-DAG:     [[Arg1:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Arg2:j\d+]]     ParameterValue
-  // CHECK-DAG:     [[Neg:j\d+]]      Neg [ [[Arg1]] ]
+  // CHECK-DAG:     <<Arg1:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Arg2:j\d+>>     ParameterValue
+  // CHECK-DAG:     <<Neg:j\d+>>      Neg [ <<Arg1>> ]
   // CHECK-DAG:                       Goto
   // -------------- Loop
   // CHECK:                           SuspendCheck
-  // CHECK:         [[Sub:j\d+]]      Sub [ [[Neg]] [[Arg2]] ]
+  // CHECK:         <<Sub:j\d+>>      Sub [ <<Neg>> <<Arg2>> ]
   // CHECK-NOT:                       Neg
   // CHECK:                           Goto
 
@@ -812,116 +812,116 @@
   }
 
   // CHECK-START: int Main.EqualTrueRhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     Equal [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     Equal [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.EqualTrueRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:                       If [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:                       If [ <<Arg>> ]
 
   public static int EqualTrueRhs(boolean arg) {
     return (arg != true) ? 3 : 5;
   }
 
   // CHECK-START: int Main.EqualTrueLhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     Equal [ [[Const1]] [[Arg]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     Equal [ <<Const1>> <<Arg>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.EqualTrueLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:                       If [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:                       If [ <<Arg>> ]
 
   public static int EqualTrueLhs(boolean arg) {
     return (true != arg) ? 3 : 5;
   }
 
   // CHECK-START: int Main.EqualFalseRhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Cond:z\d+]]     Equal [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Cond:z\d+>>     Equal [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.EqualFalseRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[NotArg:z\d+]]   BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:                       If [ [[NotArg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<NotArg:z\d+>>   BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:                       If [ <<NotArg>> ]
 
   public static int EqualFalseRhs(boolean arg) {
     return (arg != false) ? 3 : 5;
   }
 
   // CHECK-START: int Main.EqualFalseLhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Cond:z\d+]]     Equal [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Cond:z\d+>>     Equal [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.EqualFalseLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[NotArg:z\d+]]   BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:                       If [ [[NotArg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<NotArg:z\d+>>   BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:                       If [ <<NotArg>> ]
 
   public static int EqualFalseLhs(boolean arg) {
     return (false != arg) ? 3 : 5;
   }
 
   // CHECK-START: int Main.NotEqualTrueRhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     NotEqual [ [[Arg]] [[Const1]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     NotEqual [ <<Arg>> <<Const1>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.NotEqualTrueRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[NotArg:z\d+]]   BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:                       If [ [[NotArg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<NotArg:z\d+>>   BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:                       If [ <<NotArg>> ]
 
   public static int NotEqualTrueRhs(boolean arg) {
     return (arg == true) ? 3 : 5;
   }
 
   // CHECK-START: int Main.NotEqualTrueLhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     NotEqual [ [[Const1]] [[Arg]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     NotEqual [ <<Const1>> <<Arg>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.NotEqualTrueLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[NotArg:z\d+]]   BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:                       If [ [[NotArg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<NotArg:z\d+>>   BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:                       If [ <<NotArg>> ]
 
   public static int NotEqualTrueLhs(boolean arg) {
     return (true == arg) ? 3 : 5;
   }
 
   // CHECK-START: int Main.NotEqualFalseRhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Cond:z\d+]]     NotEqual [ [[Arg]] [[Const0]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Cond:z\d+>>     NotEqual [ <<Arg>> <<Const0>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.NotEqualFalseRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:                       If [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:                       If [ <<Arg>> ]
 
   public static int NotEqualFalseRhs(boolean arg) {
     return (arg == false) ? 3 : 5;
   }
 
   // CHECK-START: int Main.NotEqualFalseLhs(boolean) instruction_simplifier (before)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Cond:z\d+]]     NotEqual [ [[Const0]] [[Arg]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Cond:z\d+>>     NotEqual [ <<Const0>> <<Arg>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
 
   // CHECK-START: int Main.NotEqualFalseLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     [[Arg:z\d+]]      ParameterValue
-  // CHECK-DAG:                       If [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  // CHECK-DAG:                       If [ <<Arg>> ]
 
   public static int NotEqualFalseLhs(boolean arg) {
     return (false == arg) ? 3 : 5;
@@ -934,15 +934,15 @@
    */
 
   // CHECK-START: boolean Main.NotNotBool(boolean) instruction_simplifier_after_types (before)
-  // CHECK-DAG:     [[Arg:z\d+]]       ParameterValue
-  // CHECK-DAG:     [[NotArg:z\d+]]    BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:     [[NotNotArg:z\d+]] BooleanNot [ [[NotArg]] ]
-  // CHECK-DAG:                        Return [ [[NotNotArg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>       ParameterValue
+  // CHECK-DAG:     <<NotArg:z\d+>>    BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:     <<NotNotArg:z\d+>> BooleanNot [ <<NotArg>> ]
+  // CHECK-DAG:                        Return [ <<NotNotArg>> ]
 
   // CHECK-START: boolean Main.NotNotBool(boolean) instruction_simplifier_after_types (after)
-  // CHECK-DAG:     [[Arg:z\d+]]       ParameterValue
-  // CHECK-DAG:                        BooleanNot [ [[Arg]] ]
-  // CHECK-DAG:                        Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:z\d+>>       ParameterValue
+  // CHECK-DAG:                        BooleanNot [ <<Arg>> ]
+  // CHECK-DAG:                        Return [ <<Arg>> ]
 
   // CHECK-START: boolean Main.NotNotBool(boolean) instruction_simplifier_after_types (after)
   // CHECK:                            BooleanNot
@@ -957,16 +957,16 @@
   }
 
   // CHECK-START: float Main.Div2(float) instruction_simplifier (before)
-  // CHECK-DAG:      [[Arg:f\d+]]      ParameterValue
-  // CHECK-DAG:      [[Const2:f\d+]]   FloatConstant 2
-  // CHECK-DAG:      [[Div:f\d+]]      Div [ [[Arg]] [[Const2]] ]
-  // CHECK-DAG:                        Return [ [[Div]] ]
+  // CHECK-DAG:      <<Arg:f\d+>>      ParameterValue
+  // CHECK-DAG:      <<Const2:f\d+>>   FloatConstant 2
+  // CHECK-DAG:      <<Div:f\d+>>      Div [ <<Arg>> <<Const2>> ]
+  // CHECK-DAG:                        Return [ <<Div>> ]
 
   // CHECK-START: float Main.Div2(float) instruction_simplifier (after)
-  // CHECK-DAG:      [[Arg:f\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstP5:f\d+]]  FloatConstant 0.5
-  // CHECK-DAG:      [[Mul:f\d+]]      Mul [ [[Arg]] [[ConstP5]] ]
-  // CHECK-DAG:                        Return [ [[Mul]] ]
+  // CHECK-DAG:      <<Arg:f\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstP5:f\d+>>  FloatConstant 0.5
+  // CHECK-DAG:      <<Mul:f\d+>>      Mul [ <<Arg>> <<ConstP5>> ]
+  // CHECK-DAG:                        Return [ <<Mul>> ]
 
   // CHECK-START: float Main.Div2(float) instruction_simplifier (after)
   // CHECK-NOT:                        Div
@@ -976,16 +976,16 @@
   }
 
   // CHECK-START: double Main.Div2(double) instruction_simplifier (before)
-  // CHECK-DAG:      [[Arg:d\d+]]      ParameterValue
-  // CHECK-DAG:      [[Const2:d\d+]]   DoubleConstant 2
-  // CHECK-DAG:      [[Div:d\d+]]      Div [ [[Arg]] [[Const2]] ]
-  // CHECK-DAG:                        Return [ [[Div]] ]
+  // CHECK-DAG:      <<Arg:d\d+>>      ParameterValue
+  // CHECK-DAG:      <<Const2:d\d+>>   DoubleConstant 2
+  // CHECK-DAG:      <<Div:d\d+>>      Div [ <<Arg>> <<Const2>> ]
+  // CHECK-DAG:                        Return [ <<Div>> ]
 
   // CHECK-START: double Main.Div2(double) instruction_simplifier (after)
-  // CHECK-DAG:      [[Arg:d\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstP5:d\d+]]  DoubleConstant 0.5
-  // CHECK-DAG:      [[Mul:d\d+]]      Mul [ [[Arg]] [[ConstP5]] ]
-  // CHECK-DAG:                        Return [ [[Mul]] ]
+  // CHECK-DAG:      <<Arg:d\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstP5:d\d+>>  DoubleConstant 0.5
+  // CHECK-DAG:      <<Mul:d\d+>>      Mul [ <<Arg>> <<ConstP5>> ]
+  // CHECK-DAG:                        Return [ <<Mul>> ]
 
   // CHECK-START: double Main.Div2(double) instruction_simplifier (after)
   // CHECK-NOT:                        Div
@@ -994,16 +994,16 @@
   }
 
   // CHECK-START: float Main.DivMP25(float) instruction_simplifier (before)
-  // CHECK-DAG:      [[Arg:f\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstMP25:f\d+]]   FloatConstant -0.25
-  // CHECK-DAG:      [[Div:f\d+]]      Div [ [[Arg]] [[ConstMP25]] ]
-  // CHECK-DAG:                        Return [ [[Div]] ]
+  // CHECK-DAG:      <<Arg:f\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstMP25:f\d+>>   FloatConstant -0.25
+  // CHECK-DAG:      <<Div:f\d+>>      Div [ <<Arg>> <<ConstMP25>> ]
+  // CHECK-DAG:                        Return [ <<Div>> ]
 
   // CHECK-START: float Main.DivMP25(float) instruction_simplifier (after)
-  // CHECK-DAG:      [[Arg:f\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstM4:f\d+]]  FloatConstant -4
-  // CHECK-DAG:      [[Mul:f\d+]]      Mul [ [[Arg]] [[ConstM4]] ]
-  // CHECK-DAG:                        Return [ [[Mul]] ]
+  // CHECK-DAG:      <<Arg:f\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstM4:f\d+>>  FloatConstant -4
+  // CHECK-DAG:      <<Mul:f\d+>>      Mul [ <<Arg>> <<ConstM4>> ]
+  // CHECK-DAG:                        Return [ <<Mul>> ]
 
   // CHECK-START: float Main.DivMP25(float) instruction_simplifier (after)
   // CHECK-NOT:                        Div
@@ -1013,16 +1013,16 @@
   }
 
   // CHECK-START: double Main.DivMP25(double) instruction_simplifier (before)
-  // CHECK-DAG:      [[Arg:d\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstMP25:d\d+]]   DoubleConstant -0.25
-  // CHECK-DAG:      [[Div:d\d+]]      Div [ [[Arg]] [[ConstMP25]] ]
-  // CHECK-DAG:                        Return [ [[Div]] ]
+  // CHECK-DAG:      <<Arg:d\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstMP25:d\d+>>   DoubleConstant -0.25
+  // CHECK-DAG:      <<Div:d\d+>>      Div [ <<Arg>> <<ConstMP25>> ]
+  // CHECK-DAG:                        Return [ <<Div>> ]
 
   // CHECK-START: double Main.DivMP25(double) instruction_simplifier (after)
-  // CHECK-DAG:      [[Arg:d\d+]]      ParameterValue
-  // CHECK-DAG:      [[ConstM4:d\d+]]  DoubleConstant -4
-  // CHECK-DAG:      [[Mul:d\d+]]      Mul [ [[Arg]] [[ConstM4]] ]
-  // CHECK-DAG:                        Return [ [[Mul]] ]
+  // CHECK-DAG:      <<Arg:d\d+>>      ParameterValue
+  // CHECK-DAG:      <<ConstM4:d\d+>>  DoubleConstant -4
+  // CHECK-DAG:      <<Mul:d\d+>>      Mul [ <<Arg>> <<ConstM4>> ]
+  // CHECK-DAG:                        Return [ <<Mul>> ]
 
   // CHECK-START: double Main.DivMP25(double) instruction_simplifier (after)
   // CHECK-NOT:                        Div
diff --git a/test/462-checker-inlining-across-dex-files/src/Main.java b/test/462-checker-inlining-across-dex-files/src/Main.java
index d5563b8..5ebf3d1 100644
--- a/test/462-checker-inlining-across-dex-files/src/Main.java
+++ b/test/462-checker-inlining-across-dex-files/src/Main.java
@@ -22,7 +22,7 @@
 public class Main {
 
   // CHECK-START: void Main.inlineEmptyMethod() inliner (before)
-  // CHECK-DAG:     [[Invoke:v\d+]]  InvokeStaticOrDirect
+  // CHECK-DAG:     <<Invoke:v\d+>>  InvokeStaticOrDirect
   // CHECK-DAG:                      ReturnVoid
 
   // CHECK-START: void Main.inlineEmptyMethod() inliner (after)
@@ -33,120 +33,120 @@
   }
 
   // CHECK-START: int Main.inlineReturnIntMethod() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineReturnIntMethod() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: int Main.inlineReturnIntMethod() inliner (after)
-  // CHECK-DAG:     [[Const38:i\d+]] IntConstant 38
-  // CHECK-DAG:                      Return [ [[Const38]] ]
+  // CHECK-DAG:     <<Const38:i\d+>> IntConstant 38
+  // CHECK-DAG:                      Return [ <<Const38>> ]
 
   public static int inlineReturnIntMethod() {
     return OtherDex.returnIntMethod();
   }
 
   // CHECK-START: int Main.dontInlineOtherDexStatic() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.dontInlineOtherDexStatic() inliner (after)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   public static int dontInlineOtherDexStatic() {
     return OtherDex.returnOtherDexStatic();
   }
 
   // CHECK-START: int Main.inlineMainStatic() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineMainStatic() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: int Main.inlineMainStatic() inliner (after)
-  // CHECK-DAG:     [[Static:i\d+]]  StaticFieldGet
-  // CHECK-DAG:                      Return [ [[Static]] ]
+  // CHECK-DAG:     <<Static:i\d+>>  StaticFieldGet
+  // CHECK-DAG:                      Return [ <<Static>> ]
 
   public static int inlineMainStatic() {
     return OtherDex.returnMainStatic();
   }
 
   // CHECK-START: int Main.dontInlineRecursiveCall() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.dontInlineRecursiveCall() inliner (after)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   public static int dontInlineRecursiveCall() {
     return OtherDex.recursiveCall();
   }
 
   // CHECK-START: java.lang.String Main.dontInlineReturnString() inliner (before)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: java.lang.String Main.dontInlineReturnString() inliner (after)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   public static String dontInlineReturnString() {
     return OtherDex.returnString();
   }
 
   // CHECK-START: java.lang.Class Main.dontInlineOtherDexClass() inliner (before)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: java.lang.Class Main.dontInlineOtherDexClass() inliner (after)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   public static Class dontInlineOtherDexClass() {
     return OtherDex.returnOtherDexClass();
   }
 
   // CHECK-START: java.lang.Class Main.inlineMainClass() inliner (before)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: java.lang.Class Main.inlineMainClass() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: java.lang.Class Main.inlineMainClass() inliner (after)
-  // CHECK-DAG:     [[Class:l\d+]]  LoadClass
-  // CHECK-DAG:                     Return [ [[Class]] ]
+  // CHECK-DAG:     <<Class:l\d+>>  LoadClass
+  // CHECK-DAG:                     Return [ <<Class>> ]
 
   public static Class inlineMainClass() {
     return OtherDex.returnMainClass();
   }
 
   // CHECK-START: java.lang.Class Main.dontInlineOtherDexClassStaticCall() inliner (before)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: java.lang.Class Main.dontInlineOtherDexClassStaticCall() inliner (after)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   public static Class dontInlineOtherDexClassStaticCall() {
     return OtherDex.returnOtherDexClassStaticCall();
   }
 
   // CHECK-START: java.lang.Class Main.inlineOtherDexCallingMain() inliner (before)
-  // CHECK-DAG:     [[Invoke:l\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:l\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: java.lang.Class Main.inlineOtherDexCallingMain() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: java.lang.Class Main.inlineOtherDexCallingMain() inliner (after)
-  // CHECK-DAG:     [[Class:l\d+]]  LoadClass
-  // CHECK-DAG:                     Return [ [[Class]] ]
+  // CHECK-DAG:     <<Class:l\d+>>  LoadClass
+  // CHECK-DAG:                     Return [ <<Class>> ]
 
   public static Class inlineOtherDexCallingMain() {
     return OtherDex.returnOtherDexCallingMain();
diff --git a/test/463-checker-boolean-simplifier/src/Main.java b/test/463-checker-boolean-simplifier/src/Main.java
index 4346103..3f3110f 100644
--- a/test/463-checker-boolean-simplifier/src/Main.java
+++ b/test/463-checker-boolean-simplifier/src/Main.java
@@ -38,12 +38,12 @@
    */
 
   // CHECK-START: boolean Main.BooleanNot(boolean) boolean_simplifier (before)
-  // CHECK-DAG:     [[Param:z\d+]]    ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:                       If [ [[Param]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const1]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Param:z\d+>>    ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:                       If [ <<Param>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const1>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Phi>> ]
 
   // CHECK-START: boolean Main.BooleanNot(boolean) boolean_simplifier (before)
   // CHECK:                           Goto
@@ -52,10 +52,10 @@
   // CHECK-NOT:                       Goto
 
   // CHECK-START: boolean Main.BooleanNot(boolean) boolean_simplifier (after)
-  // CHECK-DAG:     [[Param:z\d+]]    ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[NotParam:z\d+]] BooleanNot [ [[Param]] ]
-  // CHECK-DAG:                       Return [ [[NotParam]] ]
+  // CHECK-DAG:     <<Param:z\d+>>    ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<NotParam:z\d+>> BooleanNot [ <<Param>> ]
+  // CHECK-DAG:                       Return [ <<NotParam>> ]
 
   // CHECK-START: boolean Main.BooleanNot(boolean) boolean_simplifier (after)
   // CHECK-NOT:                       If
@@ -75,22 +75,22 @@
    */
 
   // CHECK-START: boolean Main.GreaterThan(int, int) boolean_simplifier (before)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     GreaterThan [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const0]] [[Const1]] ]
-  // CHECK-DAG:                       Return [ [[Phi]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     GreaterThan [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const0>> <<Const1>> ]
+  // CHECK-DAG:                       Return [ <<Phi>> ]
 
   // CHECK-START: boolean Main.GreaterThan(int, int) boolean_simplifier (after)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     GreaterThan [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:                       Return [ [[Cond]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     GreaterThan [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:                       Return [ <<Cond>> ]
 
   public static boolean GreaterThan(int x, int y) {
     return (x <= y) ? false : true;
@@ -102,22 +102,22 @@
    */
 
   // CHECK-START: boolean Main.LessThan(int, int) boolean_simplifier (before)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     GreaterThanOrEqual [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:                       If [ [[Cond]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const1]] [[Const0]] ]
-  // CHECK-DAG:                       Return [ [[Phi]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     GreaterThanOrEqual [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:                       If [ <<Cond>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const1>> <<Const0>> ]
+  // CHECK-DAG:                       Return [ <<Phi>> ]
 
   // CHECK-START: boolean Main.LessThan(int, int) boolean_simplifier (after)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[Cond:z\d+]]     LessThan [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:                       Return [ [[Cond]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<Cond:z\d+>>     LessThan [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:                       Return [ <<Cond>> ]
 
   // CHECK-START: boolean Main.LessThan(int, int) boolean_simplifier (after)
   // CHECK-NOT:                       GreaterThanOrEqual
@@ -132,51 +132,51 @@
    */
 
   // CHECK-START: boolean Main.ValuesOrdered(int, int, int) boolean_simplifier (before)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamZ:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-  // CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-  // CHECK-DAG:     [[CondXY:z\d+]]   GreaterThan [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:                       If [ [[CondXY]] ]
-  // CHECK-DAG:     [[CondYZ:z\d+]]   GreaterThan [ [[ParamY]] [[ParamZ]] ]
-  // CHECK-DAG:                       If [ [[CondYZ]] ]
-  // CHECK-DAG:     [[CondXYZ:z\d+]]  NotEqual [ [[PhiXY:i\d+]] [[PhiYZ:i\d+]] ]
-  // CHECK-DAG:                       If [ [[CondXYZ]] ]
-  // CHECK-DAG:                       Return [ [[PhiXYZ:i\d+]] ]
-  // CHECK-DAG:     [[PhiXY]]         Phi [ [[Const1]] [[Const0]] ]
-  // CHECK-DAG:     [[PhiYZ]]         Phi [ [[Const1]] [[Const0]] ]
-  // CHECK-DAG:     [[PhiXYZ]]        Phi [ [[Const1]] [[Const0]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamZ:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+  // CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+  // CHECK-DAG:     <<CondXY:z\d+>>   GreaterThan [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:                       If [ <<CondXY>> ]
+  // CHECK-DAG:     <<CondYZ:z\d+>>   GreaterThan [ <<ParamY>> <<ParamZ>> ]
+  // CHECK-DAG:                       If [ <<CondYZ>> ]
+  // CHECK-DAG:     <<CondXYZ:z\d+>>  NotEqual [ <<PhiXY:i\d+>> <<PhiYZ:i\d+>> ]
+  // CHECK-DAG:                       If [ <<CondXYZ>> ]
+  // CHECK-DAG:                       Return [ <<PhiXYZ:i\d+>> ]
+  // CHECK-DAG:     <<PhiXY>>         Phi [ <<Const1>> <<Const0>> ]
+  // CHECK-DAG:     <<PhiYZ>>         Phi [ <<Const1>> <<Const0>> ]
+  // CHECK-DAG:     <<PhiXYZ>>        Phi [ <<Const1>> <<Const0>> ]
 
   // CHECK-START: boolean Main.ValuesOrdered(int, int, int) boolean_simplifier (after)
-  // CHECK-DAG:     [[ParamX:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamY:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[ParamZ:i\d+]]   ParameterValue
-  // CHECK-DAG:     [[CmpXY:z\d+]]    LessThanOrEqual [ [[ParamX]] [[ParamY]] ]
-  // CHECK-DAG:     [[CmpYZ:z\d+]]    LessThanOrEqual [ [[ParamY]] [[ParamZ]] ]
-  // CHECK-DAG:     [[CmpXYZ:z\d+]]   Equal [ [[CmpXY]] [[CmpYZ]] ]
-  // CHECK-DAG:                       Return [ [[CmpXYZ]] ]
+  // CHECK-DAG:     <<ParamX:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamY:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<ParamZ:i\d+>>   ParameterValue
+  // CHECK-DAG:     <<CmpXY:z\d+>>    LessThanOrEqual [ <<ParamX>> <<ParamY>> ]
+  // CHECK-DAG:     <<CmpYZ:z\d+>>    LessThanOrEqual [ <<ParamY>> <<ParamZ>> ]
+  // CHECK-DAG:     <<CmpXYZ:z\d+>>   Equal [ <<CmpXY>> <<CmpYZ>> ]
+  // CHECK-DAG:                       Return [ <<CmpXYZ>> ]
 
   public static boolean ValuesOrdered(int x, int y, int z) {
     return (x <= y) == (y <= z);
   }
 
   // CHECK-START: int Main.NegatedCondition(boolean) boolean_simplifier (before)
-  // CHECK-DAG:     [[Param:z\d+]]    ParameterValue
-  // CHECK-DAG:     [[Const42:i\d+]]  IntConstant 42
-  // CHECK-DAG:     [[Const43:i\d+]]  IntConstant 43
-  // CHECK-DAG:     [[NotParam:z\d+]] BooleanNot [ [[Param]] ]
-  // CHECK-DAG:                       If [ [[NotParam]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const42]] [[Const43]] ]
-  // CHECK-DAG:                       Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Param:z\d+>>    ParameterValue
+  // CHECK-DAG:     <<Const42:i\d+>>  IntConstant 42
+  // CHECK-DAG:     <<Const43:i\d+>>  IntConstant 43
+  // CHECK-DAG:     <<NotParam:z\d+>> BooleanNot [ <<Param>> ]
+  // CHECK-DAG:                       If [ <<NotParam>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const42>> <<Const43>> ]
+  // CHECK-DAG:                       Return [ <<Phi>> ]
 
   // CHECK-START: int Main.NegatedCondition(boolean) boolean_simplifier (after)
-  // CHECK-DAG:     [[Param:z\d+]]    ParameterValue
-  // CHECK-DAG:     [[Const42:i\d+]]  IntConstant 42
-  // CHECK-DAG:     [[Const43:i\d+]]  IntConstant 43
-  // CHECK-DAG:                       If [ [[Param]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const42]] [[Const43]] ]
-  // CHECK-DAG:                       Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Param:z\d+>>    ParameterValue
+  // CHECK-DAG:     <<Const42:i\d+>>  IntConstant 42
+  // CHECK-DAG:     <<Const43:i\d+>>  IntConstant 43
+  // CHECK-DAG:                       If [ <<Param>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const42>> <<Const43>> ]
+  // CHECK-DAG:                       Return [ <<Phi>> ]
 
   // Note: The fact that branches are swapped is verified by running the test.
 
diff --git a/test/464-checker-inline-sharpen-calls/src/Main.java b/test/464-checker-inline-sharpen-calls/src/Main.java
index 1b25b42..626823e 100644
--- a/test/464-checker-inline-sharpen-calls/src/Main.java
+++ b/test/464-checker-inline-sharpen-calls/src/Main.java
@@ -20,7 +20,7 @@
   }
 
   // CHECK-START: void Main.inlineSharpenInvokeVirtual(Main) inliner (before)
-  // CHECK-DAG:     [[Invoke:v\d+]]  InvokeStaticOrDirect
+  // CHECK-DAG:     <<Invoke:v\d+>>  InvokeStaticOrDirect
   // CHECK-DAG:                      ReturnVoid
 
   // CHECK-START: void Main.inlineSharpenInvokeVirtual(Main) inliner (after)
@@ -31,15 +31,15 @@
   }
 
   // CHECK-START: int Main.inlineSharpenStringInvoke() inliner (before)
-  // CHECK-DAG:     [[Invoke:i\d+]]  InvokeStaticOrDirect
-  // CHECK-DAG:                      Return [ [[Invoke]] ]
+  // CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
+  // CHECK-DAG:                      Return [ <<Invoke>> ]
 
   // CHECK-START: int Main.inlineSharpenStringInvoke() inliner (after)
   // CHECK-NOT:                      InvokeStaticOrDirect
 
   // CHECK-START: int Main.inlineSharpenStringInvoke() inliner (after)
-  // CHECK-DAG:     [[Field:i\d+]]   InstanceFieldGet
-  // CHECK-DAG:                      Return [ [[Field]] ]
+  // CHECK-DAG:     <<Field:i\d+>>   InstanceFieldGet
+  // CHECK-DAG:                      Return [ <<Field>> ]
 
   public static int inlineSharpenStringInvoke() {
     return "Foo".length();
diff --git a/test/465-checker-clinit-gvn/src/Main.java b/test/465-checker-clinit-gvn/src/Main.java
index dcaef6f..b712715 100644
--- a/test/465-checker-clinit-gvn/src/Main.java
+++ b/test/465-checker-clinit-gvn/src/Main.java
@@ -27,14 +27,14 @@
 public final class Main {
 
   // CHECK-START: int Main.accessTwoStatics() GVN (before)
-  // CHECK-DAG:     [[Class1:l\d+]]  LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class1]] ]
-  // CHECK-DAG:     [[Class2:l\d+]]  LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class2]] ]
+  // CHECK-DAG:     <<Class1:l\d+>>  LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class1>> ]
+  // CHECK-DAG:     <<Class2:l\d+>>  LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class2>> ]
 
   // CHECK-START: int Main.accessTwoStatics() GVN (after)
-  // CHECK-DAG:     [[Class:l\d+]]   LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class]] ]
+  // CHECK-DAG:     <<Class:l\d+>>   LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class>> ]
   // CHECK-NOT:                      ClinitCheck
 
   public static int accessTwoStatics() {
@@ -42,14 +42,14 @@
   }
 
   // CHECK-START: int Main.accessTwoStaticsCallInBetween() GVN (before)
-  // CHECK-DAG:     [[Class1:l\d+]]  LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class1]] ]
-  // CHECK-DAG:     [[Class2:l\d+]]  LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class2]] ]
+  // CHECK-DAG:     <<Class1:l\d+>>  LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class1>> ]
+  // CHECK-DAG:     <<Class2:l\d+>>  LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class2>> ]
 
   // CHECK-START: int Main.accessTwoStaticsCallInBetween() GVN (after)
-  // CHECK-DAG:     [[Class:l\d+]]   LoadClass
-  // CHECK-DAG:                      ClinitCheck [ [[Class]] ]
+  // CHECK-DAG:     <<Class:l\d+>>   LoadClass
+  // CHECK-DAG:                      ClinitCheck [ <<Class>> ]
   // CHECK-NOT:                      ClinitCheck
 
   public static int accessTwoStaticsCallInBetween() {
diff --git a/test/468-checker-bool-simplifier-regression/smali/TestCase.smali b/test/468-checker-bool-simplifier-regression/smali/TestCase.smali
index 6ff4391..0cb5313 100644
--- a/test/468-checker-bool-simplifier-regression/smali/TestCase.smali
+++ b/test/468-checker-bool-simplifier-regression/smali/TestCase.smali
@@ -19,17 +19,17 @@
 .field public static value:Z
 
 # CHECK-START: boolean TestCase.testCase() boolean_simplifier (before)
-# CHECK-DAG:     [[Const0:i\d+]]   IntConstant 0
-# CHECK-DAG:     [[Const1:i\d+]]   IntConstant 1
-# CHECK-DAG:     [[Value:z\d+]]    StaticFieldGet
-# CHECK-DAG:                       If [ [[Value]] ]
-# CHECK-DAG:     [[Phi:i\d+]]      Phi [ [[Const1]] [[Const0]] ]
-# CHECK-DAG:                       Return [ [[Phi]] ]
+# CHECK-DAG:     <<Const0:i\d+>>   IntConstant 0
+# CHECK-DAG:     <<Const1:i\d+>>   IntConstant 1
+# CHECK-DAG:     <<Value:z\d+>>    StaticFieldGet
+# CHECK-DAG:                       If [ <<Value>> ]
+# CHECK-DAG:     <<Phi:i\d+>>      Phi [ <<Const1>> <<Const0>> ]
+# CHECK-DAG:                       Return [ <<Phi>> ]
 
 # CHECK-START: boolean TestCase.testCase() boolean_simplifier (after)
-# CHECK-DAG:     [[Value:z\d+]]    StaticFieldGet
-# CHECK-DAG:     [[Not:z\d+]]      BooleanNot [ [[Value]] ]
-# CHECK-DAG:                       Return [ [[Not]] ]
+# CHECK-DAG:     <<Value:z\d+>>    StaticFieldGet
+# CHECK-DAG:     <<Not:z\d+>>      BooleanNot [ <<Value>> ]
+# CHECK-DAG:                       Return [ <<Not>> ]
 
 .method public static testCase()Z
     .registers 2
diff --git a/test/474-checker-boolean-input/src/Main.java b/test/474-checker-boolean-input/src/Main.java
index 9151986..a395ff9 100644
--- a/test/474-checker-boolean-input/src/Main.java
+++ b/test/474-checker-boolean-input/src/Main.java
@@ -28,8 +28,8 @@
    */
 
   // CHECK-START: boolean Main.TestPhiAsBoolean(int) boolean_simplifier (after)
-  // CHECK-DAG:     [[Phi:i\d+]]     Phi
-  // CHECK-DAG:                      BooleanNot [ [[Phi]] ]
+  // CHECK-DAG:     <<Phi:i\d+>>     Phi
+  // CHECK-DAG:                      BooleanNot [ <<Phi>> ]
 
   public static boolean f1;
   public static boolean f2;
@@ -48,8 +48,8 @@
    */
 
   // CHECK-START: boolean Main.TestAndAsBoolean(boolean, boolean) boolean_simplifier (after)
-  // CHECK-DAG:     [[And:i\d+]]     And
-  // CHECK-DAG:                      BooleanNot [ [[And]] ]
+  // CHECK-DAG:     <<And:i\d+>>     And
+  // CHECK-DAG:                      BooleanNot [ <<And>> ]
 
   public static boolean InlineAnd(boolean x, boolean y) {
     return x & y;
@@ -65,8 +65,8 @@
    */
 
   // CHECK-START: boolean Main.TestOrAsBoolean(boolean, boolean) boolean_simplifier (after)
-  // CHECK-DAG:     [[Or:i\d+]]      Or
-  // CHECK-DAG:                      BooleanNot [ [[Or]] ]
+  // CHECK-DAG:     <<Or:i\d+>>      Or
+  // CHECK-DAG:                      BooleanNot [ <<Or>> ]
 
   public static boolean InlineOr(boolean x, boolean y) {
     return x | y;
@@ -82,8 +82,8 @@
    */
 
   // CHECK-START: boolean Main.TestXorAsBoolean(boolean, boolean) boolean_simplifier (after)
-  // CHECK-DAG:     [[Xor:i\d+]]     Xor
-  // CHECK-DAG:                      BooleanNot [ [[Xor]] ]
+  // CHECK-DAG:     <<Xor:i\d+>>     Xor
+  // CHECK-DAG:                      BooleanNot [ <<Xor>> ]
 
   public static boolean InlineXor(boolean x, boolean y) {
     return x ^ y;
diff --git a/test/478-checker-clinit-check-pruning/src/Main.java b/test/478-checker-clinit-check-pruning/src/Main.java
index 6da8945..b36b7d6 100644
--- a/test/478-checker-clinit-check-pruning/src/Main.java
+++ b/test/478-checker-clinit-check-pruning/src/Main.java
@@ -24,13 +24,13 @@
    */
 
   // CHECK-START: void Main.invokeStaticInlined() builder (after)
-  // CHECK-DAG:     [[LoadClass:l\d+]]    LoadClass
-  // CHECK-DAG:     [[ClinitCheck:l\d+]]  ClinitCheck [ [[LoadClass]] ]
-  // CHECK-DAG:                           InvokeStaticOrDirect [ [[ClinitCheck]] ]
+  // CHECK-DAG:     <<LoadClass:l\d+>>    LoadClass
+  // CHECK-DAG:     <<ClinitCheck:l\d+>>  ClinitCheck [ <<LoadClass>> ]
+  // CHECK-DAG:                           InvokeStaticOrDirect [ <<ClinitCheck>> ]
 
   // CHECK-START: void Main.invokeStaticInlined() inliner (after)
-  // CHECK-DAG:     [[LoadClass:l\d+]]    LoadClass
-  // CHECK-DAG:     [[ClinitCheck:l\d+]]  ClinitCheck [ [[LoadClass]] ]
+  // CHECK-DAG:     <<LoadClass:l\d+>>    LoadClass
+  // CHECK-DAG:     <<ClinitCheck:l\d+>>  ClinitCheck [ <<LoadClass>> ]
 
   // CHECK-START: void Main.invokeStaticInlined() inliner (after)
   // CHECK-NOT:                           InvokeStaticOrDirect
@@ -67,14 +67,14 @@
    */
 
   // CHECK-START: void Main.invokeStaticNotInlined() builder (after)
-  // CHECK-DAG:     [[LoadClass:l\d+]]    LoadClass
-  // CHECK-DAG:     [[ClinitCheck:l\d+]]  ClinitCheck [ [[LoadClass]] ]
-  // CHECK-DAG:                           InvokeStaticOrDirect [ [[ClinitCheck]] ]
+  // CHECK-DAG:     <<LoadClass:l\d+>>    LoadClass
+  // CHECK-DAG:     <<ClinitCheck:l\d+>>  ClinitCheck [ <<LoadClass>> ]
+  // CHECK-DAG:                           InvokeStaticOrDirect [ <<ClinitCheck>> ]
 
   // CHECK-START: void Main.invokeStaticNotInlined() inliner (after)
-  // CHECK-DAG:     [[LoadClass:l\d+]]    LoadClass
-  // CHECK-DAG:     [[ClinitCheck:l\d+]]  ClinitCheck [ [[LoadClass]] ]
-  // CHECK-DAG:                           InvokeStaticOrDirect [ [[ClinitCheck]] ]
+  // CHECK-DAG:     <<LoadClass:l\d+>>    LoadClass
+  // CHECK-DAG:     <<ClinitCheck:l\d+>>  ClinitCheck [ <<LoadClass>> ]
+  // CHECK-DAG:                           InvokeStaticOrDirect [ <<ClinitCheck>> ]
 
   // The following checks ensure the clinit check and load class
   // instructions added by the builder are pruned by the
diff --git a/test/480-checker-dead-blocks/src/Main.java b/test/480-checker-dead-blocks/src/Main.java
index 83dbb26..dda1a43 100644
--- a/test/480-checker-dead-blocks/src/Main.java
+++ b/test/480-checker-dead-blocks/src/Main.java
@@ -31,19 +31,19 @@
   }
 
   // CHECK-START: int Main.testTrueBranch(int, int) dead_code_elimination_final (before)
-  // CHECK-DAG:     [[ArgX:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[ArgY:i\d+]]    ParameterValue
+  // CHECK-DAG:     <<ArgX:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<ArgY:i\d+>>    ParameterValue
   // CHECK-DAG:                      If
-  // CHECK-DAG:     [[Add:i\d+]]     Add [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]     Sub [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]     Phi [ [[Add]] [[Sub]] ]
-  // CHECK-DAG:                      Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Add:i\d+>>     Add [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>     Sub [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>     Phi [ <<Add>> <<Sub>> ]
+  // CHECK-DAG:                      Return [ <<Phi>> ]
 
   // CHECK-START: int Main.testTrueBranch(int, int) dead_code_elimination_final (after)
-  // CHECK-DAG:     [[ArgX:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[ArgY:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[Add:i\d+]]     Add [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:                      Return [ [[Add]] ]
+  // CHECK-DAG:     <<ArgX:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<ArgY:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<Add:i\d+>>     Add [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:                      Return [ <<Add>> ]
 
   // CHECK-START: int Main.testTrueBranch(int, int) dead_code_elimination_final (after)
   // CHECK-NOT:                      If
@@ -61,19 +61,19 @@
   }
 
   // CHECK-START: int Main.testFalseBranch(int, int) dead_code_elimination_final (before)
-  // CHECK-DAG:     [[ArgX:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[ArgY:i\d+]]    ParameterValue
+  // CHECK-DAG:     <<ArgX:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<ArgY:i\d+>>    ParameterValue
   // CHECK-DAG:                      If
-  // CHECK-DAG:     [[Add:i\d+]]     Add [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:     [[Sub:i\d+]]     Sub [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:     [[Phi:i\d+]]     Phi [ [[Add]] [[Sub]] ]
-  // CHECK-DAG:                      Return [ [[Phi]] ]
+  // CHECK-DAG:     <<Add:i\d+>>     Add [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:     <<Sub:i\d+>>     Sub [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:     <<Phi:i\d+>>     Phi [ <<Add>> <<Sub>> ]
+  // CHECK-DAG:                      Return [ <<Phi>> ]
 
   // CHECK-START: int Main.testFalseBranch(int, int) dead_code_elimination_final (after)
-  // CHECK-DAG:     [[ArgX:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[ArgY:i\d+]]    ParameterValue
-  // CHECK-DAG:     [[Sub:i\d+]]     Sub [ [[ArgX]] [[ArgY]] ]
-  // CHECK-DAG:                      Return [ [[Sub]] ]
+  // CHECK-DAG:     <<ArgX:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<ArgY:i\d+>>    ParameterValue
+  // CHECK-DAG:     <<Sub:i\d+>>     Sub [ <<ArgX>> <<ArgY>> ]
+  // CHECK-DAG:                      Return [ <<Sub>> ]
 
   // CHECK-START: int Main.testFalseBranch(int, int) dead_code_elimination_final (after)
   // CHECK-NOT:                      If
@@ -125,8 +125,8 @@
   // CHECK-DAG:                      Add
 
   // CHECK-START: int Main.testDeadLoop(int) dead_code_elimination_final (after)
-  // CHECK-DAG:     [[Arg:i\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: int Main.testDeadLoop(int) dead_code_elimination_final (after)
   // CHECK-NOT:                      If
@@ -145,8 +145,8 @@
   // CHECK-DAG:                      Add
 
   // CHECK-START: int Main.testUpdateLoopInformation(int) dead_code_elimination_final (after)
-  // CHECK-DAG:     [[Arg:i\d+]]     ParameterValue
-  // CHECK-DAG:                      Return [ [[Arg]] ]
+  // CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
+  // CHECK-DAG:                      Return [ <<Arg>> ]
 
   // CHECK-START: int Main.testUpdateLoopInformation(int) dead_code_elimination_final (after)
   // CHECK-NOT:                      If
diff --git a/test/485-checker-dce-loop-update/smali/TestCase.smali b/test/485-checker-dce-loop-update/smali/TestCase.smali
index 663a6ea..bdc4038 100644
--- a/test/485-checker-dce-loop-update/smali/TestCase.smali
+++ b/test/485-checker-dce-loop-update/smali/TestCase.smali
@@ -24,26 +24,26 @@
 
 
 # CHECK-START: int TestCase.testSingleExit(int, boolean) dead_code_elimination_final (before)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst1:i\d+]]  IntConstant 1
-# CHECK-DAG:     [[Cst5:i\d+]]  IntConstant 5
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[Add5:i\d+]] [[Add7:i\d+]] ] loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[Cst1]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add5]]       Add [ [[PhiX]] [[Cst5]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst1:i\d+>>  IntConstant 1
+# CHECK-DAG:     <<Cst5:i\d+>>  IntConstant 5
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<Add5:i\d+>> <<Add7:i\d+>> ] loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<Cst1>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add5>>       Add [ <<PhiX>> <<Cst5>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 # CHECK-START: int TestCase.testSingleExit(int, boolean) dead_code_elimination_final (after)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[AddX:i\d+]] ]               loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[AddX]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<AddX:i\d+>> ]               loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<AddX>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 .method public static testSingleExit(IZ)I
   .registers 3
@@ -74,30 +74,30 @@
 
 
 # CHECK-START: int TestCase.testMultipleExits(int, boolean, boolean) dead_code_elimination_final (before)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst1:i\d+]]  IntConstant 1
-# CHECK-DAG:     [[Cst5:i\d+]]  IntConstant 5
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[Add5:i\d+]] [[Add7:i\d+]] ] loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgZ]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[Cst1]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add5]]       Add [ [[PhiX]] [[Cst5]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst1:i\d+>>  IntConstant 1
+# CHECK-DAG:     <<Cst5:i\d+>>  IntConstant 5
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<Add5:i\d+>> <<Add7:i\d+>> ] loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgZ>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<Cst1>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add5>>       Add [ <<PhiX>> <<Cst5>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 # CHECK-START: int TestCase.testMultipleExits(int, boolean, boolean) dead_code_elimination_final (after)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[Add7:i\d+]] ]               loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgZ]] ]                              loop:none
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<Add7:i\d+>> ]               loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgZ>> ]                              loop:none
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 .method public static testMultipleExits(IZZ)I
   .registers 4
@@ -130,36 +130,36 @@
 
 
 # CHECK-START: int TestCase.testExitPredecessors(int, boolean, boolean) dead_code_elimination_final (before)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst1:i\d+]]  IntConstant 1
-# CHECK-DAG:     [[Cst5:i\d+]]  IntConstant 5
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[Cst9:i\d+]]  IntConstant 9
-# CHECK-DAG:     [[PhiX1:i\d+]] Phi [ [[ArgX]] [[Add5:i\d+]] [[Add7:i\d+]] ] loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgZ]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Mul9:i\d+]]  Mul [ [[PhiX1]] [[Cst9]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:     [[PhiX2:i\d+]] Phi [ [[Mul9]] [[PhiX1]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[Cst1]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add5]]       Add [ [[PhiX2]] [[Cst5]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX1]] [[Cst7]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:                    Return [ [[PhiX2]] ]                         loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst1:i\d+>>  IntConstant 1
+# CHECK-DAG:     <<Cst5:i\d+>>  IntConstant 5
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<Cst9:i\d+>>  IntConstant 9
+# CHECK-DAG:     <<PhiX1:i\d+>> Phi [ <<ArgX>> <<Add5:i\d+>> <<Add7:i\d+>> ] loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgZ>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Mul9:i\d+>>  Mul [ <<PhiX1>> <<Cst9>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:     <<PhiX2:i\d+>> Phi [ <<Mul9>> <<PhiX1>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<Cst1>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add5>>       Add [ <<PhiX2>> <<Cst5>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX1>> <<Cst7>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:                    Return [ <<PhiX2>> ]                         loop:none
 
 # CHECK-START: int TestCase.testExitPredecessors(int, boolean, boolean) dead_code_elimination_final (after)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
-# CHECK-DAG:     [[Cst9:i\d+]]  IntConstant 9
-# CHECK-DAG:     [[PhiX1:i\d+]] Phi [ [[ArgX]] [[Add7:i\d+]] ]               loop:[[HeaderY:B\d+]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX1]] [[Cst7]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgZ]] ]                              loop:none
-# CHECK-DAG:     [[Mul9:i\d+]]  Mul [ [[PhiX1]] [[Cst9]] ]                   loop:none
-# CHECK-DAG:     [[PhiX2:i\d+]] Phi [ [[Mul9]] [[PhiX1]] ]                   loop:none
-# CHECK-DAG:                    Return [ [[PhiX2]] ]                         loop:none
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
+# CHECK-DAG:     <<Cst9:i\d+>>  IntConstant 9
+# CHECK-DAG:     <<PhiX1:i\d+>> Phi [ <<ArgX>> <<Add7:i\d+>> ]               loop:<<HeaderY:B\d+>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX1>> <<Cst7>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgZ>> ]                              loop:none
+# CHECK-DAG:     <<Mul9:i\d+>>  Mul [ <<PhiX1>> <<Cst9>> ]                   loop:none
+# CHECK-DAG:     <<PhiX2:i\d+>> Phi [ <<Mul9>> <<PhiX1>> ]                   loop:none
+# CHECK-DAG:                    Return [ <<PhiX2>> ]                         loop:none
 
 .method public static testExitPredecessors(IZZ)I
   .registers 4
@@ -197,48 +197,48 @@
 
 
 # CHECK-START: int TestCase.testInnerLoop(int, boolean, boolean) dead_code_elimination_final (before)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst0:i\d+]]  IntConstant 0
-# CHECK-DAG:     [[Cst1:i\d+]]  IntConstant 1
-# CHECK-DAG:     [[Cst5:i\d+]]  IntConstant 5
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst0:i\d+>>  IntConstant 0
+# CHECK-DAG:     <<Cst1:i\d+>>  IntConstant 1
+# CHECK-DAG:     <<Cst5:i\d+>>  IntConstant 5
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
 #
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[Add5:i\d+]] [[Add7:i\d+]] ] loop:[[HeaderY:B\d+]]
-# CHECK-DAG:     [[PhiZ1:i\d+]] Phi [ [[ArgZ]] [[XorZ:i\d+]] [[PhiZ1]] ]     loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<Add5:i\d+>> <<Add7:i\d+>> ] loop:<<HeaderY:B\d+>>
+# CHECK-DAG:     <<PhiZ1:i\d+>> Phi [ <<ArgZ>> <<XorZ:i\d+>> <<PhiZ1>> ]     loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
 #
 #                               ### Inner loop ###
-# CHECK-DAG:     [[PhiZ2:i\d+]] Phi [ [[PhiZ1]] [[XorZ]] ]                   loop:[[HeaderZ:B\d+]]
-# CHECK-DAG:     [[XorZ]]       Xor [ [[PhiZ2]] [[Cst1]] ]                   loop:[[HeaderZ]]
-# CHECK-DAG:     [[CondZ:z\d+]] Equal [ [[XorZ]] [[Cst0]] ]                  loop:[[HeaderZ]]
-# CHECK-DAG:                    If [ [[CondZ]] ]                             loop:[[HeaderZ]]
+# CHECK-DAG:     <<PhiZ2:i\d+>> Phi [ <<PhiZ1>> <<XorZ>> ]                   loop:<<HeaderZ:B\d+>>
+# CHECK-DAG:     <<XorZ>>       Xor [ <<PhiZ2>> <<Cst1>> ]                   loop:<<HeaderZ>>
+# CHECK-DAG:     <<CondZ:z\d+>> Equal [ <<XorZ>> <<Cst0>> ]                  loop:<<HeaderZ>>
+# CHECK-DAG:                    If [ <<CondZ>> ]                             loop:<<HeaderZ>>
 #
-# CHECK-DAG:     [[Add5]]       Add [ [[PhiX]] [[Cst5]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:     <<Add5>>       Add [ <<PhiX>> <<Cst5>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 # CHECK-START: int TestCase.testInnerLoop(int, boolean, boolean) dead_code_elimination_final (after)
-# CHECK-DAG:     [[ArgX:i\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgY:z\d+]]  ParameterValue
-# CHECK-DAG:     [[ArgZ:z\d+]]  ParameterValue
-# CHECK-DAG:     [[Cst0:i\d+]]  IntConstant 0
-# CHECK-DAG:     [[Cst1:i\d+]]  IntConstant 1
-# CHECK-DAG:     [[Cst7:i\d+]]  IntConstant 7
+# CHECK-DAG:     <<ArgX:i\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgY:z\d+>>  ParameterValue
+# CHECK-DAG:     <<ArgZ:z\d+>>  ParameterValue
+# CHECK-DAG:     <<Cst0:i\d+>>  IntConstant 0
+# CHECK-DAG:     <<Cst1:i\d+>>  IntConstant 1
+# CHECK-DAG:     <<Cst7:i\d+>>  IntConstant 7
 #
-# CHECK-DAG:     [[PhiX:i\d+]]  Phi [ [[ArgX]] [[Add7:i\d+]] ]               loop:[[HeaderY:B\d+]]
-# CHECK-DAG:     [[PhiZ1:i\d+]] Phi [ [[ArgZ]] [[PhiZ1]] ]                   loop:[[HeaderY]]
-# CHECK-DAG:                    If [ [[ArgY]] ]                              loop:[[HeaderY]]
-# CHECK-DAG:     [[Add7]]       Add [ [[PhiX]] [[Cst7]] ]                    loop:[[HeaderY]]
+# CHECK-DAG:     <<PhiX:i\d+>>  Phi [ <<ArgX>> <<Add7:i\d+>> ]               loop:<<HeaderY:B\d+>>
+# CHECK-DAG:     <<PhiZ1:i\d+>> Phi [ <<ArgZ>> <<PhiZ1>> ]                   loop:<<HeaderY>>
+# CHECK-DAG:                    If [ <<ArgY>> ]                              loop:<<HeaderY>>
+# CHECK-DAG:     <<Add7>>       Add [ <<PhiX>> <<Cst7>> ]                    loop:<<HeaderY>>
 #
 #                               ### Inner loop ###
-# CHECK-DAG:     [[PhiZ2:i\d+]] Phi [ [[PhiZ1]] [[XorZ:i\d+]] ]              loop:[[HeaderZ:B\d+]]
-# CHECK-DAG:     [[XorZ]]       Xor [ [[PhiZ2]] [[Cst1]] ]                   loop:[[HeaderZ]]
-# CHECK-DAG:     [[CondZ:z\d+]] Equal [ [[XorZ]] [[Cst0]] ]                  loop:[[HeaderZ]]
-# CHECK-DAG:                    If [ [[CondZ]] ]                             loop:[[HeaderZ]]
+# CHECK-DAG:     <<PhiZ2:i\d+>> Phi [ <<PhiZ1>> <<XorZ:i\d+>> ]              loop:<<HeaderZ:B\d+>>
+# CHECK-DAG:     <<XorZ>>       Xor [ <<PhiZ2>> <<Cst1>> ]                   loop:<<HeaderZ>>
+# CHECK-DAG:     <<CondZ:z\d+>> Equal [ <<XorZ>> <<Cst0>> ]                  loop:<<HeaderZ>>
+# CHECK-DAG:                    If [ <<CondZ>> ]                             loop:<<HeaderZ>>
 #
-# CHECK-DAG:                    Return [ [[PhiX]] ]                          loop:none
+# CHECK-DAG:                    Return [ <<PhiX>> ]                          loop:none
 
 .method public static testInnerLoop(IZZ)I
   .registers 4
diff --git a/tools/checker/README b/tools/checker/README
index 9b23ae9..2763948 100644
--- a/tools/checker/README
+++ b/tools/checker/README
@@ -11,7 +11,7 @@
 passes. Each group of check lines therefore must start with a 'CHECK-START'
 header which specifies the output group it should be tested against. The group
 name must exactly match one of the groups recognized in the output (they can
-be listed with the '--list-groups' command-line flag).
+be listed with the '--list-passes' command-line flag).
 
 Matching of check lines is carried out in the order of appearance in the
 source file. There are three types of check lines:
@@ -38,7 +38,7 @@
 the invalid regex 'foo{2', but '{{(fo{2})}}' will match 'foo'.
 
 Regex patterns can be named and referenced later. A new variable is defined
-with '[[name:regex]]' and can be referenced with '[[name]]'. Variables are
+with '<<name:regex>>' and can be referenced with '<<name>>'. Variables are
 only valid within the scope of the defining group. Within a group they cannot
 be redefined or used undefined.
 
@@ -46,8 +46,8 @@
   The following assertions can be placed in a Java source file:
 
   // CHECK-START: int MyClass.MyMethod() constant_folding (after)
-  // CHECK:         [[ID:i\d+]]  IntConstant {{11|22}}
-  // CHECK:                      Return [ [[ID]] ]
+  // CHECK:         <<ID:i\d+>>  IntConstant {{11|22}}
+  // CHECK:                      Return [ <<ID>> ]
 
   The engine will attempt to match the check lines against the output of the
   group named on the first line. Together they verify that the CFG after
diff --git a/tools/checker/file_format/checker/struct.py b/tools/checker/file_format/checker/struct.py
index 3354cb6..381c92b 100644
--- a/tools/checker/file_format/checker/struct.py
+++ b/tools/checker/file_format/checker/struct.py
@@ -114,8 +114,8 @@
     rRegex = r"(.+?)"
     rPatternStartSym = r"(\{\{)"
     rPatternEndSym = r"(\}\})"
-    rVariableStartSym = r"(\[\[)"
-    rVariableEndSym = r"(\]\])"
+    rVariableStartSym = r"(<<)"
+    rVariableEndSym = r"(>>)"
     rVariableSeparator = r"(:)"
 
     regexPattern = rPatternStartSym + rRegex + rPatternEndSym
diff --git a/tools/checker/file_format/checker/test.py b/tools/checker/file_format/checker/test.py
index 167c888..475e8c3 100644
--- a/tools/checker/file_format/checker/test.py
+++ b/tools/checker/file_format/checker/test.py
@@ -104,10 +104,10 @@
     self.assertEqualsPattern("{{a?b.c}}", "a?b.c")
 
   def test_VarRefOnly(self):
-    self.assertEqualsVarRef("[[ABC]]", "ABC")
+    self.assertEqualsVarRef("<<ABC>>", "ABC")
 
   def test_VarDefOnly(self):
-    self.assertEqualsVarDef("[[ABC:a?b.c]]", "ABC", "a?b.c")
+    self.assertEqualsVarDef("<<ABC:a?b.c>>", "ABC", "a?b.c")
 
   def test_TextWithWhitespace(self):
     self.assertEqualsRegex("foo bar", "(foo), (bar)")
@@ -117,7 +117,7 @@
     self.assertEqualsRegex("foo{{abc}}bar", "(foo)(abc)(bar)")
 
   def test_TextWithVar(self):
-    self.assertEqualsRegex("foo[[ABC:abc]]bar", "(foo)(abc)(bar)")
+    self.assertEqualsRegex("foo<<ABC:abc>>bar", "(foo)(abc)(bar)")
 
   def test_PlainWithRegexAndWhitespaces(self):
     self.assertEqualsRegex("foo {{abc}}bar", "(foo), (abc)(bar)")
@@ -125,14 +125,14 @@
     self.assertEqualsRegex("foo {{abc}} bar", "(foo), (abc), (bar)")
 
   def test_PlainWithVarAndWhitespaces(self):
-    self.assertEqualsRegex("foo [[ABC:abc]]bar", "(foo), (abc)(bar)")
-    self.assertEqualsRegex("foo[[ABC:abc]] bar", "(foo)(abc), (bar)")
-    self.assertEqualsRegex("foo [[ABC:abc]] bar", "(foo), (abc), (bar)")
+    self.assertEqualsRegex("foo <<ABC:abc>>bar", "(foo), (abc)(bar)")
+    self.assertEqualsRegex("foo<<ABC:abc>> bar", "(foo)(abc), (bar)")
+    self.assertEqualsRegex("foo <<ABC:abc>> bar", "(foo), (abc), (bar)")
 
   def test_AllKinds(self):
-    self.assertEqualsRegex("foo [[ABC:abc]]{{def}}bar", "(foo), (abc)(def)(bar)")
-    self.assertEqualsRegex("foo[[ABC:abc]] {{def}}bar", "(foo)(abc), (def)(bar)")
-    self.assertEqualsRegex("foo [[ABC:abc]] {{def}} bar", "(foo), (abc), (def), (bar)")
+    self.assertEqualsRegex("foo <<ABC:abc>>{{def}}bar", "(foo), (abc)(def)(bar)")
+    self.assertEqualsRegex("foo<<ABC:abc>> {{def}}bar", "(foo)(abc), (def)(bar)")
+    self.assertEqualsRegex("foo <<ABC:abc>> {{def}} bar", "(foo), (abc), (def), (bar)")
 
   # # Test that variables and patterns are parsed correctly
 
@@ -142,35 +142,35 @@
     self.assertEqualsPattern("{{(a{bc})}}", "(a{bc})")
 
   def test_ValidRef(self):
-    self.assertEqualsVarRef("[[ABC]]", "ABC")
-    self.assertEqualsVarRef("[[A1BC2]]", "A1BC2")
+    self.assertEqualsVarRef("<<ABC>>", "ABC")
+    self.assertEqualsVarRef("<<A1BC2>>", "A1BC2")
 
   def test_ValidDef(self):
-    self.assertEqualsVarDef("[[ABC:abc]]", "ABC", "abc")
-    self.assertEqualsVarDef("[[ABC:ab:c]]", "ABC", "ab:c")
-    self.assertEqualsVarDef("[[ABC:a[b]c]]", "ABC", "a[b]c")
-    self.assertEqualsVarDef("[[ABC:(a[bc])]]", "ABC", "(a[bc])")
+    self.assertEqualsVarDef("<<ABC:abc>>", "ABC", "abc")
+    self.assertEqualsVarDef("<<ABC:ab:c>>", "ABC", "ab:c")
+    self.assertEqualsVarDef("<<ABC:a[b]c>>", "ABC", "a[b]c")
+    self.assertEqualsVarDef("<<ABC:(a[bc])>>", "ABC", "(a[bc])")
 
   def test_Empty(self):
     self.assertVariantNotEqual("{{}}", RegexExpression.Variant.Pattern)
-    self.assertVariantNotEqual("[[]]", RegexExpression.Variant.VarRef)
-    self.assertVariantNotEqual("[[:]]", RegexExpression.Variant.VarDef)
+    self.assertVariantNotEqual("<<>>", RegexExpression.Variant.VarRef)
+    self.assertVariantNotEqual("<<:>>", RegexExpression.Variant.VarDef)
 
   def test_InvalidVarName(self):
-    self.assertVariantNotEqual("[[0ABC]]", RegexExpression.Variant.VarRef)
-    self.assertVariantNotEqual("[[AB=C]]", RegexExpression.Variant.VarRef)
-    self.assertVariantNotEqual("[[ABC=]]", RegexExpression.Variant.VarRef)
-    self.assertVariantNotEqual("[[0ABC:abc]]", RegexExpression.Variant.VarDef)
-    self.assertVariantNotEqual("[[AB=C:abc]]", RegexExpression.Variant.VarDef)
-    self.assertVariantNotEqual("[[ABC=:abc]]", RegexExpression.Variant.VarDef)
+    self.assertVariantNotEqual("<<0ABC>>", RegexExpression.Variant.VarRef)
+    self.assertVariantNotEqual("<<AB=C>>", RegexExpression.Variant.VarRef)
+    self.assertVariantNotEqual("<<ABC=>>", RegexExpression.Variant.VarRef)
+    self.assertVariantNotEqual("<<0ABC:abc>>", RegexExpression.Variant.VarDef)
+    self.assertVariantNotEqual("<<AB=C:abc>>", RegexExpression.Variant.VarDef)
+    self.assertVariantNotEqual("<<ABC=:abc>>", RegexExpression.Variant.VarDef)
 
   def test_BodyMatchNotGreedy(self):
     self.assertEqualsRegex("{{abc}}{{def}}", "(abc)(def)")
-    self.assertEqualsRegex("[[ABC:abc]][[DEF:def]]", "(abc)(def)")
+    self.assertEqualsRegex("<<ABC:abc>><<DEF:def>>", "(abc)(def)")
 
   def test_NoVarDefsInNotChecks(self):
     with self.assertRaises(CheckerException):
-      self.parseAssertion("[[ABC:abc]]", "-NOT")
+      self.parseAssertion("<<ABC:abc>>", "-NOT")
 
 
 class CheckerParser_FileLayoutTest(unittest.TestCase):
diff --git a/tools/checker/match/test.py b/tools/checker/match/test.py
index 62e8e00..bb3b1af 100644
--- a/tools/checker/match/test.py
+++ b/tools/checker/match/test.py
@@ -58,40 +58,40 @@
     self.assertFalse(self.matches("foo{{A|B}}bar", "fooCbar"))
 
   def test_VariableReference(self):
-    self.assertTrue(self.matches("foo[[X]]bar", "foobar", {"X": ""}))
-    self.assertTrue(self.matches("foo[[X]]bar", "fooAbar", {"X": "A"}))
-    self.assertTrue(self.matches("foo[[X]]bar", "fooBbar", {"X": "B"}))
-    self.assertFalse(self.matches("foo[[X]]bar", "foobar", {"X": "A"}))
-    self.assertFalse(self.matches("foo[[X]]bar", "foo bar", {"X": "A"}))
+    self.assertTrue(self.matches("foo<<X>>bar", "foobar", {"X": ""}))
+    self.assertTrue(self.matches("foo<<X>>bar", "fooAbar", {"X": "A"}))
+    self.assertTrue(self.matches("foo<<X>>bar", "fooBbar", {"X": "B"}))
+    self.assertFalse(self.matches("foo<<X>>bar", "foobar", {"X": "A"}))
+    self.assertFalse(self.matches("foo<<X>>bar", "foo bar", {"X": "A"}))
     with self.assertRaises(CheckerException):
-      self.assertTrue(self.matches("foo[[X]]bar", "foobar", {}))
+      self.assertTrue(self.matches("foo<<X>>bar", "foobar", {}))
 
   def test_VariableDefinition(self):
-    self.assertTrue(self.matches("foo[[X:A|B]]bar", "fooAbar"))
-    self.assertTrue(self.matches("foo[[X:A|B]]bar", "fooBbar"))
-    self.assertFalse(self.matches("foo[[X:A|B]]bar", "fooCbar"))
+    self.assertTrue(self.matches("foo<<X:A|B>>bar", "fooAbar"))
+    self.assertTrue(self.matches("foo<<X:A|B>>bar", "fooBbar"))
+    self.assertFalse(self.matches("foo<<X:A|B>>bar", "fooCbar"))
 
-    env = self.tryMatch("foo[[X:A.*B]]bar", "fooABbar", {})
+    env = self.tryMatch("foo<<X:A.*B>>bar", "fooABbar", {})
     self.assertEqual(env, {"X": "AB"})
-    env = self.tryMatch("foo[[X:A.*B]]bar", "fooAxxBbar", {})
+    env = self.tryMatch("foo<<X:A.*B>>bar", "fooAxxBbar", {})
     self.assertEqual(env, {"X": "AxxB"})
 
-    self.assertTrue(self.matches("foo[[X:A|B]]bar[[X]]baz", "fooAbarAbaz"))
-    self.assertTrue(self.matches("foo[[X:A|B]]bar[[X]]baz", "fooBbarBbaz"))
-    self.assertFalse(self.matches("foo[[X:A|B]]bar[[X]]baz", "fooAbarBbaz"))
+    self.assertTrue(self.matches("foo<<X:A|B>>bar<<X>>baz", "fooAbarAbaz"))
+    self.assertTrue(self.matches("foo<<X:A|B>>bar<<X>>baz", "fooBbarBbaz"))
+    self.assertFalse(self.matches("foo<<X:A|B>>bar<<X>>baz", "fooAbarBbaz"))
 
   def test_NoVariableRedefinition(self):
     with self.assertRaises(CheckerException):
-      self.matches("[[X:...]][[X]][[X:...]][[X]]", "foofoobarbar")
+      self.matches("<<X:...>><<X>><<X:...>><<X>>", "foofoobarbar")
 
   def test_EnvNotChangedOnPartialMatch(self):
     env = {"Y": "foo"}
-    self.assertFalse(self.matches("[[X:A]]bar", "Abaz", env))
+    self.assertFalse(self.matches("<<X:A>>bar", "Abaz", env))
     self.assertFalse("X" in env.keys())
 
   def test_VariableContentEscaped(self):
-    self.assertTrue(self.matches("[[X:..]]foo[[X]]", ".*foo.*"))
-    self.assertFalse(self.matches("[[X:..]]foo[[X]]", ".*fooAAAA"))
+    self.assertTrue(self.matches("<<X:..>>foo<<X>>", ".*foo.*"))
+    self.assertFalse(self.matches("<<X:..>>foo<<X>>", ".*fooAAAA"))
 
 
 class MatchFiles_Test(unittest.TestCase):
@@ -133,8 +133,8 @@
   def test_Variables(self):
     self.assertTrue(self.matches(
     """
-      // CHECK: foo[[X:.]]bar
-      // CHECK: abc[[X]]def
+      // CHECK: foo<<X:.>>bar
+      // CHECK: abc<<X>>def
     """,
     """
       foo bar
@@ -142,9 +142,9 @@
     """))
     self.assertTrue(self.matches(
     """
-      // CHECK: foo[[X:([0-9]+)]]bar
-      // CHECK: abc[[X]]def
-      // CHECK: ### [[X]] ###
+      // CHECK: foo<<X:([0-9]+)>>bar
+      // CHECK: abc<<X>>def
+      // CHECK: ### <<X>> ###
     """,
     """
       foo1234bar
@@ -153,8 +153,8 @@
     """))
     self.assertFalse(self.matches(
     """
-      // CHECK: foo[[X:([0-9]+)]]bar
-      // CHECK: abc[[X]]def
+      // CHECK: foo<<X:([0-9]+)>>bar
+      // CHECK: abc<<X>>def
     """,
     """
       foo1234bar