[turbofan] Also optimize unsigned division by constant.

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 628 matching lines @@
   } else {
     if (g.CanBeBetterLeftOperand(right)) {
       std::swap(left, right);
     }
     Emit(kIA32Imul, g.DefineSameAsFirst(node), g.UseRegister(left),
          g.Use(right));
   }
 }
 
 
-void InstructionSelector::VisitInt32MulHigh(Node* node) {
-  IA32OperandGenerator g(this);
-  Emit(kIA32ImulHigh, g.DefineAsFixed(node, edx),
-       g.UseFixed(node->InputAt(0), eax),
-       g.UseUniqueRegister(node->InputAt(1)));
+namespace {
+
+void VisitMulHigh(InstructionSelector* selector, Node* node,
+                  ArchOpcode opcode) {
+  IA32OperandGenerator g(selector);
+  selector->Emit(opcode, g.DefineAsFixed(node, edx),
+                 g.UseFixed(node->InputAt(0), eax),
+                 g.UseUniqueRegister(node->InputAt(1)));
 }
 
 
-static inline void VisitDiv(InstructionSelector* selector, Node* node,
-                            ArchOpcode opcode) {
+void VisitDiv(InstructionSelector* selector, Node* node, ArchOpcode opcode) {
   IA32OperandGenerator g(selector);
   InstructionOperand* temps[] = {g.TempRegister(edx)};
-  size_t temp_count = arraysize(temps);
   selector->Emit(opcode, g.DefineAsFixed(node, eax),
                  g.UseFixed(node->InputAt(0), eax),
-                 g.UseUnique(node->InputAt(1)), temp_count, temps);
+                 g.UseUnique(node->InputAt(1)), arraysize(temps), temps);
 }
 
 
+void VisitMod(InstructionSelector* selector, Node* node, ArchOpcode opcode) {
+  IA32OperandGenerator g(selector);
+  selector->Emit(opcode, g.DefineAsFixed(node, edx),
+                 g.UseFixed(node->InputAt(0), eax),
+                 g.UseUnique(node->InputAt(1)));
+}
+
+}  // namespace
+
+
+void InstructionSelector::VisitInt32MulHigh(Node* node) {
+  VisitMulHigh(this, node, kIA32ImulHigh);
+}
+
+
+void InstructionSelector::VisitUint32MulHigh(Node* node) {
+  VisitMulHigh(this, node, kIA32UmulHigh);
+}
+
+
 void InstructionSelector::VisitInt32Div(Node* node) {
   VisitDiv(this, node, kIA32Idiv);
 }
 
 
 void InstructionSelector::VisitUint32Div(Node* node) {
   VisitDiv(this, node, kIA32Udiv);
 }
 
 
-static inline void VisitMod(InstructionSelector* selector, Node* node,
-                            ArchOpcode opcode) {
-  IA32OperandGenerator g(selector);
-  selector->Emit(opcode, g.DefineAsFixed(node, edx),
-                 g.UseFixed(node->InputAt(0), eax),
-                 g.UseUnique(node->InputAt(1)));
-}
-
-
 void InstructionSelector::VisitInt32Mod(Node* node) {
   VisitMod(this, node, kIA32Idiv);
 }
 
 
 void InstructionSelector::VisitUint32Mod(Node* node) {
   VisitMod(this, node, kIA32Udiv);
 }
 
 
@@ skipping 387 matching lines @@
   if (CpuFeatures::IsSupported(SSE4_1)) {
     return MachineOperatorBuilder::kFloat64Floor |
            MachineOperatorBuilder::kFloat64Ceil |
            MachineOperatorBuilder::kFloat64RoundTruncate;
   }
   return MachineOperatorBuilder::Flag::kNoFlags;
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8