A64: Synchronize with r18444.

test/mjsunit/regress/internalized-string-not-equal.js

Index: test/mjsunit/regress/internalized-string-not-equal.js
diff --git a/test/mjsunit/compiler/increment-typefeedback.js b/test/mjsunit/regress/internalized-string-not-equal.js
similarity index 86%
copy from test/mjsunit/compiler/increment-typefeedback.js
copy to test/mjsunit/regress/internalized-string-not-equal.js
index 798959296c43014f252d65ae5dd11e00563bfd04..911279b43e6b1174449132bea96fe48144657461 100644
--- a/test/mjsunit/compiler/increment-typefeedback.js
+++ b/test/mjsunit/regress/internalized-string-not-equal.js
@@ -27,13 +27,14 @@
 
 // Flags: --allow-natives-syntax
 
-function f(x) {
-  x++;
-  return x;
+// A bug in r15773, when masks for internalized string and string types
+// were reorganized.
+function equal(o1, o2) {
+  return (o1 == o2);
 }
-
-f(0.5);
-f(0.5);
-%OptimizeFunctionOnNextCall(f);
-f(0.5);
-assertOptimized(f);
+var a = "abc";
+var b = "abc";
+equal(a, b);
+equal(a, b);
+%OptimizeFunctionOnNextCall(equal);
+assertTrue(equal(1.3, 1.3));