Implement inline string compare on ARM.

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index 65a408b48bc3d466a72217d48d500a9cf559d3ed..a0ebfdc95d164f7ab6bbcbadda93eed1e0f53069 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -1311,8 +1311,7 @@ void MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first_object,
   ASSERT(kNotStringTag != 0);
   const int kFlatAsciiStringMask =
       kIsNotStringMask | kStringRepresentationMask | kStringEncodingMask;
-  const int kFlatAsciiStringBits =
-      kNotStringTag | kSeqStringTag | kAsciiStringTag;
+  const int kFlatAsciiStringTag = ASCII_STRING_TYPE;
 
   andl(scratch1, Immediate(kFlatAsciiStringMask));
   andl(scratch2, Immediate(kFlatAsciiStringMask));
@@ -1320,7 +1319,7 @@ void MacroAssembler::JumpIfNotBothSequentialAsciiStrings(Register first_object,
   ASSERT_EQ(0, kFlatAsciiStringMask & (kFlatAsciiStringMask << 3));
   lea(scratch1, Operand(scratch1, scratch2, times_8, 0));
   cmpl(scratch1,
-       Immediate(kFlatAsciiStringBits + (kFlatAsciiStringBits << 3)));
+       Immediate(kFlatAsciiStringTag + (kFlatAsciiStringTag << 3)));
   j(not_equal, on_fail);
 }