ART: Distinguish Checker lines from comments

In order to prevent tests passing due to lines with hard-to-spot
formatting errors begin ignored, e.g. by forgetting the colon after
"//CHECK", Checker will now require its assertions to start with "///"
or "##", respectivelly for Java and Smali. Such lines will never be
ignored and will fail the test unless successfully parsed.

Change-Id: I0da9a8f13eb96d950af8c85df17d1899a853a299
diff --git a/test/458-checker-instruction-simplification/src/Main.java b/test/458-checker-instruction-simplification/src/Main.java
index 742210c..ad5fc8e 100644
--- a/test/458-checker-instruction-simplification/src/Main.java
+++ b/test/458-checker-instruction-simplification/src/Main.java
@@ -50,296 +50,296 @@
    * Tiny programs exercising optimizations of arithmetic identities.
    */
 
-  // 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-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-START: long Main.Add0(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
-  // CHECK-DAG:                      Return [<<Arg>>]
+  /// CHECK-START: long Main.Add0(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  /// CHECK-DAG:                      Return [<<Arg>>]
 
-  // CHECK-START: long Main.Add0(long) instruction_simplifier (after)
-  // CHECK-NOT:                        Add
+  /// CHECK-START: long Main.Add0(long) instruction_simplifier (after)
+  /// CHECK-NOT:                        Add
 
   public static long Add0(long arg) {
     return 0 + arg;
   }
 
-  // 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-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-START: int Main.AndAllOnes(int) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
-  // CHECK-DAG:                      Return [<<Arg>>]
+  /// CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:i\d+>>     ParameterValue
+  /// CHECK-DAG:                      Return [<<Arg>>]
 
-  // CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (after)
-  // CHECK-NOT:                      And
+  /// CHECK-START: int Main.AndAllOnes(int) instruction_simplifier (after)
+  /// CHECK-NOT:                      And
 
   public static int AndAllOnes(int arg) {
     return arg & -1;
   }
 
-  // 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-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-START: long Main.Div1(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
-  // CHECK-DAG:                      Return [<<Arg>>]
+  /// CHECK-START: long Main.Div1(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  /// CHECK-DAG:                      Return [<<Arg>>]
 
-  // CHECK-START: long Main.Div1(long) instruction_simplifier (after)
-  // CHECK-NOT:                      Div
+  /// CHECK-START: long Main.Div1(long) instruction_simplifier (after)
+  /// CHECK-NOT:                      Div
 
   public static long Div1(long arg) {
     return arg / 1;
   }
 
-  // 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-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-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-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-START: int Main.DivN1(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Div
+  /// CHECK-START: int Main.DivN1(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Div
 
   public static int DivN1(int arg) {
     return arg / -1;
   }
 
-  // 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-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-START: long Main.Mul1(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
-  // CHECK-DAG:                      Return [<<Arg>>]
+  /// CHECK-START: long Main.Mul1(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>     ParameterValue
+  /// CHECK-DAG:                      Return [<<Arg>>]
 
-  // CHECK-START: long Main.Mul1(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Mul
+  /// CHECK-START: long Main.Mul1(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Mul
 
   public static long Mul1(long arg) {
     return arg * 1;
   }
 
-  // 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-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-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-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-START: int Main.MulN1(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Mul
+  /// CHECK-START: int Main.MulN1(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Mul
 
   public static int MulN1(int arg) {
     return arg * -1;
   }
 
-  // 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-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-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-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-START: long Main.MulPowerOfTwo128(long) instruction_simplifier (after)
-  // CHECK-NOT:                        Mul
+  /// CHECK-START: long Main.MulPowerOfTwo128(long) instruction_simplifier (after)
+  /// CHECK-NOT:                        Mul
 
   public static long MulPowerOfTwo128(long arg) {
     return arg * 128;
   }
 
-  // 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-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-START: int Main.Or0(int) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: int Main.Or0(int) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: int Main.Or0(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Or
+  /// CHECK-START: int Main.Or0(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Or
 
   public static int Or0(int arg) {
     return arg | 0;
   }
 
-  // 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-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-START: long Main.OrSame(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
-  // CHECK-DAG:                        Return [<<Arg>>]
+  /// CHECK-START: long Main.OrSame(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>       ParameterValue
+  /// CHECK-DAG:                        Return [<<Arg>>]
 
-  // CHECK-START: long Main.OrSame(long) instruction_simplifier (after)
-  // CHECK-NOT:                        Or
+  /// CHECK-START: long Main.OrSame(long) instruction_simplifier (after)
+  /// CHECK-NOT:                        Or
 
   public static long OrSame(long arg) {
     return arg | arg;
   }
 
-  // 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-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-START: int Main.Shl0(int) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: int Main.Shl0(int) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: int Main.Shl0(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Shl
+  /// CHECK-START: int Main.Shl0(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Shl
 
   public static int Shl0(int arg) {
     return arg << 0;
   }
 
-  // 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-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-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-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-START: int Main.Shl1(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Shl
+  /// CHECK-START: int Main.Shl1(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Shl
 
   public static int Shl1(int arg) {
     return arg << 1;
   }
 
-  // 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-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-START: long Main.Shr0(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.Shr0(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.Shr0(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Shr
+  /// CHECK-START: long Main.Shr0(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Shr
 
   public static long Shr0(long arg) {
     return arg >> 0;
   }
 
-  // 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-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-START: long Main.Sub0(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.Sub0(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.Sub0(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Sub
+  /// CHECK-START: long Main.Sub0(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Sub
 
   public static long Sub0(long arg) {
     return arg - 0;
   }
 
-  // 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-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-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-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-START: int Main.SubAliasNeg(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Sub
+  /// CHECK-START: int Main.SubAliasNeg(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Sub
 
   public static int SubAliasNeg(int arg) {
     return 0 - arg;
   }
 
-  // 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-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-START: long Main.UShr0(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.UShr0(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.UShr0(long) instruction_simplifier (after)
-  // CHECK-NOT:                       UShr
+  /// CHECK-START: long Main.UShr0(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       UShr
 
   public static long UShr0(long arg) {
     return arg >>> 0;
   }
 
-  // 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-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-START: int Main.Xor0(int) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: int Main.Xor0(int) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:i\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: int Main.Xor0(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Xor
+  /// CHECK-START: int Main.Xor0(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Xor
 
   public static int Xor0(int arg) {
     return arg ^ 0;
   }
 
-  // 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-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-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-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-START: int Main.XorAllOnes(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Xor
+  /// CHECK-START: int Main.XorAllOnes(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Xor
 
   public static int XorAllOnes(int arg) {
     return arg ^ -1;
@@ -352,21 +352,21 @@
    * `InstructionSimplifierVisitor::TryMoveNegOnInputsAfterBinop`.
    */
 
-  // 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-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-START: int Main.AddNegs1(int, int) instruction_simplifier (after)
-  // 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-START: int Main.AddNegs1(int, int) instruction_simplifier (after)
+  /// 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>>]
 
   public static int AddNegs1(int arg1, int arg2) {
     return -arg1 + -arg2;
@@ -383,35 +383,35 @@
    * increasing the register pressure by creating or extending live ranges.
    */
 
-  // 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-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-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-NOT:                       Neg
-  // 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-NOT:                       Neg
+  /// 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-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>>]
 
   public static int AddNegs2(int arg1, int arg2) {
     int temp1 = -arg1;
@@ -427,30 +427,30 @@
    * the loop.
    */
 
-  // 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:                           Goto
-  // -------------- Loop
-  // CHECK:                           SuspendCheck
-  // CHECK:         <<Add:j\d+>>      Add [<<Neg1>>,<<Neg2>>]
-  // CHECK:                           Goto
+  /// 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:                           Goto
+  //  -------------- Loop
+  /// CHECK:                           SuspendCheck
+  /// 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:                           Goto
-  // -------------- Loop
-  // CHECK:                           SuspendCheck
-  // CHECK:         <<Add:j\d+>>      Add [<<Neg1>>,<<Neg2>>]
-  // CHECK-NOT:                       Neg
-  // 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:                           Goto
+  //  -------------- Loop
+  /// CHECK:                           SuspendCheck
+  /// CHECK:         <<Add:j\d+>>      Add [<<Neg1>>,<<Neg2>>]
+  /// CHECK-NOT:                       Neg
+  /// CHECK:                           Goto
 
   public static long AddNegs3(long arg1, long arg2) {
     long res = 0;
@@ -468,22 +468,22 @@
    * The transformation tested is implemented in `InstructionSimplifierVisitor::VisitAdd`.
    */
 
-  // 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-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-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-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-START: long Main.AddNeg1(long, long) instruction_simplifier (after)
-  // CHECK-NOT:                       Neg
-  // CHECK-NOT:                       Add
+  /// CHECK-START: long Main.AddNeg1(long, long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Neg
+  /// CHECK-NOT:                       Add
 
   public static long AddNeg1(long arg1, long arg2) {
     return -arg1 + arg2;
@@ -498,26 +498,26 @@
    * increasing the register pressure by creating or extending live ranges.
    */
 
-  // 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-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-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-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-START: long Main.AddNeg2(long, long) instruction_simplifier (after)
-  // CHECK-NOT:                       Sub
+  /// CHECK-START: long Main.AddNeg2(long, long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Sub
 
   public static long AddNeg2(long arg1, long arg2) {
     long temp = -arg2;
@@ -529,18 +529,18 @@
    * The transformation tested is implemented in `InstructionSimplifierVisitor::VisitNeg`.
    */
 
-  // 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-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-START: long Main.NegNeg1(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.NegNeg1(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.NegNeg1(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Neg
+  /// CHECK-START: long Main.NegNeg1(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Neg
 
   public static long NegNeg1(long arg) {
     return -(-arg);
@@ -553,27 +553,27 @@
    * and in `InstructionSimplifierVisitor::VisitAdd`.
    */
 
-  // 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-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-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-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-START: int Main.NegNeg2(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Neg
-  // CHECK-NOT:                       Add
+  /// 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-NOT:                       Neg
-  // CHECK-NOT:                       Add
-  // CHECK:                           Return [<<Const0>>]
+  /// CHECK-START: int Main.NegNeg2(int) constant_folding_after_inlining (after)
+  /// CHECK:         <<Const0:i\d+>>   IntConstant 0
+  /// CHECK-NOT:                       Neg
+  /// CHECK-NOT:                       Add
+  /// CHECK:                           Return [<<Const0>>]
 
   public static int NegNeg2(int arg) {
     int temp = -arg;
@@ -587,20 +587,20 @@
    * and in `InstructionSimplifierVisitor::VisitSub`.
    */
 
-  // 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-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-START: long Main.NegNeg3(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.NegNeg3(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.NegNeg3(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Neg
-  // CHECK-NOT:                       Sub
+  /// CHECK-START: long Main.NegNeg3(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Neg
+  /// CHECK-NOT:                       Sub
 
   public static long NegNeg3(long arg) {
     return 0 - -arg;
@@ -612,21 +612,21 @@
    * The transformation tested is implemented in `InstructionSimplifierVisitor::VisitNeg`.
    */
 
-  // 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-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-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-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-START: int Main.NegSub1(int, int) instruction_simplifier (after)
-  // CHECK-NOT:                       Neg
+  /// CHECK-START: int Main.NegSub1(int, int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Neg
 
   public static int NegSub1(int arg1, int arg2) {
     return -(arg1 - arg2);
@@ -642,23 +642,23 @@
    * increasing the register pressure by creating or extending live ranges.
    */
 
-  // 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-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-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-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>>]
 
   public static int NegSub2(int arg1, int arg2) {
     int temp = arg1 - arg2;
@@ -670,40 +670,40 @@
    * The transformation tested is implemented in `InstructionSimplifierVisitor::VisitNot`.
    */
 
-  // 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-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-START: long Main.NotNot1(long) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
-  // CHECK-DAG:                       Return [<<Arg>>]
+  /// CHECK-START: long Main.NotNot1(long) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:j\d+>>      ParameterValue
+  /// CHECK-DAG:                       Return [<<Arg>>]
 
-  // CHECK-START: long Main.NotNot1(long) instruction_simplifier (after)
-  // CHECK-NOT:                       Xor
+  /// CHECK-START: long Main.NotNot1(long) instruction_simplifier (after)
+  /// CHECK-NOT:                       Xor
 
   public static long NotNot1(long arg) {
     return ~~arg;
   }
 
-  // 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-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-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-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-START: int Main.NotNot2(int) instruction_simplifier (after)
-  // CHECK-NOT:                       Xor
+  /// CHECK-START: int Main.NotNot2(int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Xor
 
   public static int NotNot2(int arg) {
     int temp = ~arg;
@@ -715,22 +715,22 @@
    * The transformation tested is implemented in `InstructionSimplifierVisitor::VisitSub`.
    */
 
-  // 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-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-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-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-START: int Main.SubNeg1(int, int) instruction_simplifier (after)
-  // CHECK-NOT:                       Sub
+  /// CHECK-START: int Main.SubNeg1(int, int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Sub
 
   public static int SubNeg1(int arg1, int arg2) {
     return -arg1 - arg2;
@@ -746,26 +746,26 @@
    * increasing the register pressure by creating or extending live ranges.
    */
 
-  // 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-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-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-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-START: int Main.SubNeg2(int, int) instruction_simplifier (after)
-  // CHECK-NOT:                       Add
+  /// CHECK-START: int Main.SubNeg2(int, int) instruction_simplifier (after)
+  /// CHECK-NOT:                       Add
 
   public static int SubNeg2(int arg1, int arg2) {
     int temp = -arg1;
@@ -779,28 +779,28 @@
    * the loop.
    */
 
-  // 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:                           Goto
-  // -------------- Loop
-  // CHECK:                           SuspendCheck
-  // CHECK:         <<Sub:j\d+>>      Sub [<<Neg>>,<<Arg2>>]
-  // CHECK:                           Goto
+  /// 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:                           Goto
+  //  -------------- Loop
+  /// CHECK:                           SuspendCheck
+  /// 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:                       Goto
-  // -------------- Loop
-  // CHECK:                           SuspendCheck
-  // CHECK:         <<Sub:j\d+>>      Sub [<<Neg>>,<<Arg2>>]
-  // CHECK-NOT:                       Neg
-  // 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:                       Goto
+  //  -------------- Loop
+  /// CHECK:                           SuspendCheck
+  /// CHECK:         <<Sub:j\d+>>      Sub [<<Neg>>,<<Arg2>>]
+  /// CHECK-NOT:                       Neg
+  /// CHECK:                           Goto
 
   public static long SubNeg3(long arg1, long arg2) {
     long res = 0;
@@ -811,117 +811,117 @@
     return res;
   }
 
-  // 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-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-START: int Main.EqualTrueRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
-  // CHECK-DAG:                       If [<<Arg>>]
+  /// CHECK-START: int Main.EqualTrueRhs(boolean) instruction_simplifier (after)
+  /// 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-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-START: int Main.EqualTrueLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
-  // CHECK-DAG:                       If [<<Arg>>]
+  /// CHECK-START: int Main.EqualTrueLhs(boolean) instruction_simplifier (after)
+  /// 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-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-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-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>>]
 
   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-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-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-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>>]
 
   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-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-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-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>>]
 
   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-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-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-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>>]
 
   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-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-START: int Main.NotEqualFalseRhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
-  // CHECK-DAG:                       If [<<Arg>>]
+  /// CHECK-START: int Main.NotEqualFalseRhs(boolean) instruction_simplifier (after)
+  /// 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-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-START: int Main.NotEqualFalseLhs(boolean) instruction_simplifier (after)
-  // CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
-  // CHECK-DAG:                       If [<<Arg>>]
+  /// CHECK-START: int Main.NotEqualFalseLhs(boolean) instruction_simplifier (after)
+  /// CHECK-DAG:     <<Arg:z\d+>>      ParameterValue
+  /// CHECK-DAG:                       If [<<Arg>>]
 
   public static int NotEqualFalseLhs(boolean arg) {
     return (false == arg) ? 3 : 5;
@@ -933,20 +933,20 @@
    * remove the second.
    */
 
-  // 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-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-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-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-START: boolean Main.NotNotBool(boolean) instruction_simplifier_after_types (after)
-  // CHECK:                            BooleanNot
-  // CHECK-NOT:                        BooleanNot
+  /// CHECK-START: boolean Main.NotNotBool(boolean) instruction_simplifier_after_types (after)
+  /// CHECK:                            BooleanNot
+  /// CHECK-NOT:                        BooleanNot
 
   public static boolean NegateValue(boolean arg) {
     return !arg;
@@ -956,76 +956,76 @@
     return !(NegateValue(arg));
   }
 
-  // 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-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-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-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-START: float Main.Div2(float) instruction_simplifier (after)
-  // CHECK-NOT:                        Div
+  /// CHECK-START: float Main.Div2(float) instruction_simplifier (after)
+  /// CHECK-NOT:                        Div
 
   public static float Div2(float arg) {
     return arg / 2.0f;
   }
 
-  // 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-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-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-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-START: double Main.Div2(double) instruction_simplifier (after)
-  // CHECK-NOT:                        Div
+  /// CHECK-START: double Main.Div2(double) instruction_simplifier (after)
+  /// CHECK-NOT:                        Div
   public static double Div2(double arg) {
     return arg / 2.0;
   }
 
-  // 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-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-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-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-START: float Main.DivMP25(float) instruction_simplifier (after)
-  // CHECK-NOT:                        Div
+  /// CHECK-START: float Main.DivMP25(float) instruction_simplifier (after)
+  /// CHECK-NOT:                        Div
 
   public static float DivMP25(float arg) {
     return arg / -0.25f;
   }
 
-  // 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-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-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-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-START: double Main.DivMP25(double) instruction_simplifier (after)
-  // CHECK-NOT:                        Div
+  /// CHECK-START: double Main.DivMP25(double) instruction_simplifier (after)
+  /// CHECK-NOT:                        Div
   public static double DivMP25(double arg) {
     return arg / -0.25f;
   }