[turbofan] IA: Uint32ToFloat64 supports mem operand.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 468 matching lines @@
     case kSSEInt32ToFloat64: {
       RegisterOrOperand input = i.InputRegisterOrOperand(0);
       if (input.type == kRegister) {
         __ cvtlsi2sd(i.OutputDoubleRegister(), input.reg);
       } else {
         __ cvtlsi2sd(i.OutputDoubleRegister(), input.operand);
       }
       break;
     }
     case kSSEUint32ToFloat64: {
-      // TODO(turbofan): X64 SSE cvtqsi2sd should support operands.
-      __ cvtqsi2sd(i.OutputDoubleRegister(), i.InputRegister(0));
+      RegisterOrOperand input = i.InputRegisterOrOperand(0);
+      if (input.type == kRegister) {
+        __ cvtqsi2sd(i.OutputDoubleRegister(), input.reg);
+      } else {
+        __ cvtqsi2sd(i.OutputDoubleRegister(), input.operand);
+      }
       break;
     }
     case kX64Movsxbl:
       __ movsxbl(i.OutputRegister(), i.MemoryOperand());
       break;
     case kX64Movzxbl:
       __ movzxbl(i.OutputRegister(), i.MemoryOperand());
       break;
     case kX64Movb: {
       int index = 0;
@@ skipping 498 matching lines @@
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { __ nop(); }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8