Introduce rolp, rorp, rclp, rcrp, shlp, shrp and sarp for x64 port

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index b070d054f165d30548fb36bfb9f5918dc1ffbf77..7c6116a0bfbefdb85caea322c1342a5ee06ec7ec 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -3114,7 +3114,8 @@ void StringHelper::GenerateCopyCharactersREP(MacroAssembler* masm,
 
   // Copy from edi to esi using rep movs instruction.
   __ movl(kScratchRegister, count);
-  __ shr(count, Immediate(kPointerSizeLog2));  // Number of doublewords to copy.
+  // Number of doublewords to copy.
+  __ shrp(count, Immediate(kPointerSizeLog2));

[Toon Verwaest, 2014/03/27 16:12:42]

shrl?

[haitao.feng, 2014/03/28 04:14:40]

Done.

   __ repmovsp();
 
   // Find number of bytes left.
@@ -5017,7 +5018,7 @@ void InternalArrayConstructorStub::Generate(MacroAssembler* masm) {
   __ movzxbp(rcx, FieldOperand(rcx, Map::kBitField2Offset));
   // Retrieve elements_kind from bit field 2.
   __ andp(rcx, Immediate(Map::kElementsKindMask));
-  __ shr(rcx, Immediate(Map::kElementsKindShift));
+  __ shrp(rcx, Immediate(Map::kElementsKindShift));
 
   if (FLAG_debug_code) {
     Label done;