Allocate normal register for LDoubleToI in DoToInt32 (fixes no-sse3 issue)

src/ia32/lithium-ia32.cc

 // Copyright 2011 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 1779 matching lines @@
     LOperand* temp = FixedTemp(xmm1);
     LClampTToUint8* result = new LClampTToUint8(reg, temp);
     return AssignEnvironment(DefineFixed(result, eax));
   }
 }
 
 
 LInstruction* LChunkBuilder::DoToInt32(HToInt32* instr) {
   HValue* value = instr->value();
   Representation input_rep = value->representation();
-  // Register allocator doesn't (yet) support allocation of double
-  // temps. Reserve xmm1 explicitly.
-  LOperand* xmm_temp =
-      CpuFeatures::IsSupported(SSE3)
-      ? NULL
-      : FixedTemp(xmm1);
+
   LInstruction* result;
   if (input_rep.IsDouble()) {
     LOperand* reg = UseRegister(value);
-    // Register allocator doesn't (yet) support allocation of double
-    // temps. Reserve xmm1 explicitly.
-    result = DefineAsRegister(new LDoubleToI(reg, xmm_temp));
+    LOperand* temp_reg =
+        CpuFeatures::IsSupported(SSE3) ? NULL : TempRegister();
+    result = DefineAsRegister(new LDoubleToI(reg, temp_reg));
   } else if (input_rep.IsInteger32()) {
     // Canonicalization should already have removed the hydrogen instruction in
     // this case, since it is a noop.
     UNREACHABLE();
     return NULL;
   } else {
     ASSERT(input_rep.IsTagged());
     LOperand* reg = UseRegister(value);
+    // Register allocator doesn't (yet) support allocation of double
+    // temps. Reserve xmm1 explicitly.
+    LOperand* xmm_temp =
+        CpuFeatures::IsSupported(SSE3) ? NULL : FixedTemp(xmm1);
     result = DefineSameAsFirst(new LTaggedToI(reg, xmm_temp));
   }
   return AssignEnvironment(result);
 }
 
 
 LInstruction* LChunkBuilder::DoReturn(HReturn* instr) {
   return new LReturn(UseFixed(instr->value(), eax));
 }
 
@@ skipping 452 matching lines @@
   LOperand* key = UseOrConstantAtStart(instr->key());
   LOperand* object = UseOrConstantAtStart(instr->object());
   LIn* result = new LIn(key, object);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32