Remove duplicated code, the two emit_operand were basically identical.

src/assembler-ia32.cc

Index: src/assembler-ia32.cc
diff --git a/src/assembler-ia32.cc b/src/assembler-ia32.cc
index fbe63de67a1401010b59f40d657f740264c83a83..610542b596e7f6fa26b7e48bd1c353ea076172bd 100644
--- a/src/assembler-ia32.cc
+++ b/src/assembler-ia32.cc
@@ -781,7 +781,7 @@ void Assembler::and_(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   EMIT(0x21);
-  emit_operand(dst, src);
+  emit_operand(src, dst);
 }
 
 
@@ -949,7 +949,7 @@ void Assembler::or_(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   EMIT(0x09);
-  emit_operand(dst, src);
+  emit_operand(src, dst);
 }
 
 
@@ -1077,7 +1077,7 @@ void Assembler::sub(const Operand& dst, Register src) {
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
   EMIT(0x29);
-  emit_operand(dst, src);
+  emit_operand(src, dst);
 }
 
 
@@ -2017,18 +2017,6 @@ void Assembler::emit_operand(Register reg, const Operand& adr) {
 }
 
 
-void Assembler::emit_operand(const Operand& adr, Register reg) {
-  adr.set_reg(reg);
-  memmove(pc_, adr.buf_, adr.len_);
-  pc_ += adr.len_;
-  if (adr.len_ >= sizeof(int32_t) && adr.rmode_ != RelocInfo::NONE) {
-    pc_ -= sizeof(int32_t);  // pc_ must be *at* disp32
-    RecordRelocInfo(adr.rmode_);
-    pc_ += sizeof(int32_t);
-  }
-}
-
-
 void Assembler::emit_farith(int b1, int b2, int i) {
   ASSERT(is_uint8(b1) && is_uint8(b2));  // wrong opcode
   ASSERT(0 <= i &&  i < 8);  // illegal stack offset