Add signed/unsigned 8-bit and 16-bit Representations

src/x64/macro-assembler-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 932 matching lines @@
 
 
 void MacroAssembler::Cvtlsi2sd(XMMRegister dst, const Operand& src) {
   xorps(dst, dst);
   cvtlsi2sd(dst, src);
 }
 
 
 void MacroAssembler::Load(Register dst, const Operand& src, Representation r) {
   ASSERT(!r.IsDouble());
-  if (r.IsByte()) {
+  if (r.IsInteger8()) {
+    movsxbq(dst, src);
+  } else if (r.IsUInteger8()) {
     movzxbl(dst, src);
+  } else if (r.IsInteger16()) {
+    movsxwq(dst, src);
+  } else if (r.IsUInteger16()) {
+    movzxwl(dst, src);
   } else if (r.IsInteger32()) {
     movl(dst, src);
   } else {
     movq(dst, src);
   }
 }
 
 
 void MacroAssembler::Store(const Operand& dst, Register src, Representation r) {
   ASSERT(!r.IsDouble());
-  if (r.IsByte()) {
+  if (r.IsInteger8() || r.IsUInteger8()) {
     movb(dst, src);
+  } else if (r.IsInteger16() || r.IsUInteger16()) {
+    movw(dst, src);
   } else if (r.IsInteger32()) {
     movl(dst, src);
   } else {
     movq(dst, src);
   }
 }
 
 
 void MacroAssembler::Set(Register dst, int64_t x) {
   if (x == 0) {
@@ skipping 3988 matching lines @@
   movq(arg_reg_1, isolate, RelocInfo::EXTERNAL_REFERENCE);
   CallCFunction(
       ExternalReference::record_object_allocation_function(isolate), 3);
   PopSafepointRegisters();
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64