[turbofan] Use register for instruction operands when SameAsFirst is specified.

src/compiler/ia32/instruction-selector-ia32.cc

 // Copyright 2014 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/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 
 namespace v8 {
 namespace internal {
@@ skipping 242 matching lines @@
   Int32BinopMatcher m(node);
   Node* left = m.left().node();
   Node* right = m.right().node();
   InstructionOperand* inputs[4];
   size_t input_count = 0;
   InstructionOperand* outputs[2];
   size_t output_count = 0;
 
   // TODO(turbofan): match complex addressing modes.
   if (g.CanBeImmediate(right)) {
-    inputs[input_count++] = g.Use(left);
+    inputs[input_count++] = g.UseRegister(left);
     inputs[input_count++] = g.UseImmediate(right);
   } else {
     if (node->op()->HasProperty(Operator::kCommutative) &&
         g.CanBeBetterLeftOperand(right)) {
       std::swap(left, right);
     }
     inputs[input_count++] = g.UseRegister(left);
     inputs[input_count++] = g.Use(right);
   }
 
@@ skipping 34 matching lines @@
 
 void InstructionSelector::VisitWord32Or(Node* node) {
   VisitBinop(this, node, kIA32Or);
 }
 
 
 void InstructionSelector::VisitWord32Xor(Node* node) {
   IA32OperandGenerator g(this);
   Int32BinopMatcher m(node);
   if (m.right().Is(-1)) {
-    Emit(kIA32Not, g.DefineSameAsFirst(node), g.Use(m.left().node()));
+    Emit(kIA32Not, g.DefineSameAsFirst(node), g.UseRegister(m.left().node()));
   } else {
     VisitBinop(this, node, kIA32Xor);
   }
 }
 
 
 // Shared routine for multiple shift operations.
 static inline void VisitShift(InstructionSelector* selector, Node* node,
                               ArchOpcode opcode) {
   IA32OperandGenerator g(selector);
   Node* left = node->InputAt(0);
   Node* right = node->InputAt(1);
 
   if (g.CanBeImmediate(right)) {
-    selector->Emit(opcode, g.DefineSameAsFirst(node), g.Use(left),
+    selector->Emit(opcode, g.DefineSameAsFirst(node), g.UseRegister(left),
                    g.UseImmediate(right));
   } else {
     Int32BinopMatcher m(node);
     if (m.right().IsWord32And()) {
       Int32BinopMatcher mright(right);
       if (mright.right().Is(0x1F)) {
         right = mright.left().node();
       }
     }
-    selector->Emit(opcode, g.DefineSameAsFirst(node), g.Use(left),
+    selector->Emit(opcode, g.DefineSameAsFirst(node), g.UseRegister(left),
                    g.UseFixed(right, ecx));
   }
 }
 
 
 void InstructionSelector::VisitWord32Shl(Node* node) {
   VisitShift(this, node, kIA32Shl);
 }
 
 
@@ skipping 355 matching lines @@
   call_instr->MarkAsCall();
   if (deoptimization != NULL) {
     DCHECK(continuation != NULL);
     call_instr->MarkAsControl();
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8