Fix test after inlining optimization.

Runtime.getRuntime() can now be inlined, but the test was
assuming it could not, therefore instructions would not get
licm'ed.

test: 482-checker-loop-back-edge-use
Change-Id: I19ea20c555f699673556225ecf9d945c5a91afa5
diff --git a/test/482-checker-loop-back-edge-use/src/Main.java b/test/482-checker-loop-back-edge-use/src/Main.java
index 65dfd41..86977d1 100644
--- a/test/482-checker-loop-back-edge-use/src/Main.java
+++ b/test/482-checker-loop-back-edge-use/src/Main.java
@@ -164,6 +164,12 @@
     }
   }
 
+
+  static boolean $opt$noinline$ensureSideEffects() {
+    if (doThrow) throw new Error("");
+    return true;
+  }
+
   /// CHECK-START: void Main.loop9() liveness (after)
   /// CHECK:         <<Arg:z\d+>>  StaticFieldGet  liveness:<<ArgLiv:\d+>> ranges:{[<<ArgLiv>>,<<ArgLoopUse:\d+>>)} uses:[<<ArgUse:\d+>>,<<ArgLoopUse>>]
   /// CHECK:                       If [<<Arg>>]    liveness:<<IfLiv:\d+>>
@@ -178,7 +184,7 @@
     // Add some code at entry to avoid having the entry block be a pre header.
     // This avoids having to create a synthesized block.
     System.out.println("Enter");
-    while (Runtime.getRuntime() != null) {
+    while ($opt$noinline$ensureSideEffects()) {
       // 'incoming' must only have a use in the inner loop.
       boolean incoming = field;
       while (incoming) {}
@@ -189,4 +195,5 @@
   }
 
   static boolean field;
+  static boolean doThrow = false;
 }