Implement inline string compare on ARM.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 2cf469aeb889c4ef8800bf4a741859d4aad30b25..dc017ae326da6b81541da7a3dc26f8fbbbf2a882 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -860,6 +860,24 @@ void Assembler::cmpb(const Operand& op, int8_t imm8) {
 }
 
 
+void Assembler::cmpb(const Operand& dst, Register src) {
+  ASSERT(src.is_byte_register());
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0x38);
+  emit_operand(src, dst);
+}
+
+
+void Assembler::cmpb(Register dst, const Operand& src) {
+  ASSERT(dst.is_byte_register());
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0x3A);
+  emit_operand(dst, src);
+}
+
+
 void Assembler::cmpw(const Operand& op, Immediate imm16) {
   ASSERT(imm16.is_int16());
   EnsureSpace ensure_space(this);