Porting Math.pow changes to x64.

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 1428 matching lines @@
   }
 }
 
 
 LInstruction* LChunkBuilder::DoPower(HPower* instr) {
   ASSERT(instr->representation().IsDouble());
   // We call a C function for double power. It can't trigger a GC.
   // We need to use fixed result register for the call.
   Representation exponent_type = instr->right()->representation();
   ASSERT(instr->left()->representation().IsDouble());
-  LOperand* left = UseFixedDouble(instr->left(), xmm1);
+  LOperand* left = UseFixedDouble(instr->left(), xmm2);
   LOperand* right = exponent_type.IsDouble() ?
-      UseFixedDouble(instr->right(), xmm2) :
+      UseFixedDouble(instr->right(), xmm1) :
       UseFixed(instr->right(), eax);
   LPower* result = new(zone()) LPower(left, right);
   return MarkAsCall(DefineFixedDouble(result, xmm3), instr,
                     CAN_DEOPTIMIZE_EAGERLY);
 }
 
 
 LInstruction* LChunkBuilder::DoCompareGeneric(HCompareGeneric* instr) {
   ASSERT(instr->left()->representation().IsTagged());
   ASSERT(instr->right()->representation().IsTagged());
@@ skipping 912 matching lines @@
   LOperand* key = UseOrConstantAtStart(instr->key());
   LOperand* object = UseOrConstantAtStart(instr->object());
   LIn* result = new(zone()) LIn(context, key, object);
   return MarkAsCall(DefineFixed(result, eax), instr);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32