Merge bleeding edge up to 9192 into the GC branch.

test/cctest/test-assembler-arm.cc

Index: test/cctest/test-assembler-arm.cc
diff --git a/test/cctest/test-assembler-arm.cc b/test/cctest/test-assembler-arm.cc
index 17032035c4c670d99eabf85238e5f29970268437..ecbf95691601d90280a8f0d2805356362cea9d5f 100644
--- a/test/cctest/test-assembler-arm.cc
+++ b/test/cctest/test-assembler-arm.cc
@@ -1010,4 +1010,18 @@ TEST(11) {
   CHECK_EQ(0xffffffff, i.d);
 }
 
+
+TEST(12) {
+  // Test chaining of label usages within instructions (issue 1644).
+  InitializeVM();
+  v8::HandleScope scope;
+  Assembler assm(Isolate::Current(), NULL, 0);
+
+  Label target;
+  __ b(eq, &target);
+  __ b(ne, &target);
+  __ bind(&target);
+  __ nop();
+}
+
 #undef __