* Removed rep cmpsb everywhere in irregexp-ia32

src/assembler-ia32.cc

Index: src/assembler-ia32.cc
diff --git a/src/assembler-ia32.cc b/src/assembler-ia32.cc
index c174ea04adc582a23f6650ceaf18a98db0975dcf..99d76a906c55887fbab30c76d849b0a128dd6865 100644
--- a/src/assembler-ia32.cc
+++ b/src/assembler-ia32.cc
@@ -866,6 +866,37 @@ void Assembler::cmp(const Operand& op, const Immediate& imm) {
 }
 
 
+void Assembler::cld() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xFC);  // CLD to ensure forward operation
+}
+
+
+void Assembler::cmpb_al(const Operand& op) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0x38);  // CMP r/m8, r8
+  emit_operand(eax, op);  // eax has same code as register al.
+}
+
+
+void Assembler::cmpw_ax(const Operand& op) {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0x66);
+  EMIT(0x39);  // CMP r/m16, r16
+  emit_operand(eax, op);  // eax has same code as register ax.
+}
+
+
+void Assembler::cmpsb() {
+  EnsureSpace ensure_space(this);
+  last_pc_ = pc_;
+  EMIT(0xA6);  // CMPSB
+}
+
+
 void Assembler::rep_cmpsb() {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;