Revert change 5989, which causes failures in some benchmarks.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
===================================================================
--- src/ia32/assembler-ia32.cc	(revision 5989)
+++ src/ia32/assembler-ia32.cc	(working copy)
@@ -2409,7 +2409,6 @@
   emit_sse_operand(dst, src);
 }
 
-
 void Assembler::movsd(XMMRegister dst, XMMRegister src) {
   ASSERT(CpuFeatures::IsEnabled(SSE2));
   EnsureSpace ensure_space(this);
@@ -2432,17 +2431,6 @@
 }
 
 
-void Assembler::movd(const Operand& dst, XMMRegister src) {
-  ASSERT(CpuFeatures::IsEnabled(SSE2));
-  EnsureSpace ensure_space(this);
-  last_pc_ = pc_;
-  EMIT(0x66);
-  EMIT(0x0F);
-  EMIT(0x7E);
-  emit_sse_operand(src, dst);
-}
-
-
 void Assembler::pand(XMMRegister dst, XMMRegister src) {
   ASSERT(CpuFeatures::IsEnabled(SSE2));
   EnsureSpace ensure_space(this);
@@ -2477,7 +2465,7 @@
 }
 
 
-void Assembler::psllq(XMMRegister reg, int8_t shift) {
+void Assembler::psllq(XMMRegister reg, int8_t imm8) {
   ASSERT(CpuFeatures::IsEnabled(SSE2));
   EnsureSpace ensure_space(this);
   last_pc_ = pc_;
@@ -2485,35 +2473,10 @@
   EMIT(0x0F);
   EMIT(0x73);
   emit_sse_operand(esi, reg);  // esi == 6
-  EMIT(shift);
+  EMIT(imm8);
 }
 
 
-void Assembler::pshufd(XMMRegister dst, XMMRegister src, int8_t shuffle) {
-  ASSERT(CpuFeatures::IsEnabled(SSE2));
-  EnsureSpace ensure_space(this);
-  last_pc_ = pc_;
-  EMIT(0x66);
-  EMIT(0x0F);
-  EMIT(0x70);
-  emit_sse_operand(dst, src);
-  EMIT(shuffle);
-}
-
-
-void Assembler::pextrd(const Operand& dst, XMMRegister src, int8_t offset) {
-  ASSERT(CpuFeatures::IsEnabled(SSE2));
-  EnsureSpace ensure_space(this);
-  last_pc_ = pc_;
-  EMIT(0x66);
-  EMIT(0x0F);
-  EMIT(0x3A);
-  EMIT(0x16);
-  emit_sse_operand(src, dst);
-  EMIT(offset);
-}
-
-
 void Assembler::emit_sse_operand(XMMRegister reg, const Operand& adr) {
   Register ireg = { reg.code() };
   emit_operand(ireg, adr);