PPC: [turbofan] Add TruncationMode for TruncateFloat64ToInt32.

src/compiler/ppc/instruction-selector-ppc.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/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
 namespace v8 {
@@ skipping 856 matching lines @@
 
 #if V8_TARGET_ARCH_PPC64
 void InstructionSelector::VisitChangeInt32ToInt64(Node* node) {
   // TODO(mbrandy): inspect input to see if nop is appropriate.
   VisitRR(this, kPPC_ExtendSignWord32, node);
 }
 
 
 void InstructionSelector::VisitChangeUint32ToUint64(Node* node) {
   // TODO(mbrandy): inspect input to see if nop is appropriate.
-  PPCOperandGenerator g(this);
-  Emit(kPPC_Uint32ToUint64, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
+  VisitRR(this, kPPC_Uint32ToUint64, node);
 }
 #endif
 
 
 void InstructionSelector::VisitTruncateFloat64ToFloat32(Node* node) {
-  PPCOperandGenerator g(this);
-  Emit(kPPC_DoubleToFloat32, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
+  VisitRR(this, kPPC_DoubleToFloat32, node);
+}
+
+
+void InstructionSelector::VisitTruncateFloat64ToInt32(Node* node) {
+  switch (TruncationModeOf(node->op())) {
+    case TruncationMode::kJavaScript:
+      return VisitRR(this, kArchTruncateDoubleToI, node);
+    case TruncationMode::kRoundToZero:
+      return VisitRR(this, kPPC_DoubleToInt32, node);
+  }
+  UNREACHABLE();
 }
 
 
 #if V8_TARGET_ARCH_PPC64
 void InstructionSelector::VisitTruncateInt64ToInt32(Node* node) {
-  PPCOperandGenerator g(this);
   // TODO(mbrandy): inspect input to see if nop is appropriate.
-  Emit(kPPC_Int64ToInt32, g.DefineAsRegister(node),
-       g.UseRegister(node->InputAt(0)));
+  VisitRR(this, kPPC_Int64ToInt32, node);
 }
 #endif
 
 
 void InstructionSelector::VisitFloat32Add(Node* node) {
   VisitRRR(this, kPPC_AddDouble, node);
 }
 
 
 void InstructionSelector::VisitFloat64Add(Node* node) {
@@ skipping 746 matching lines @@
 InstructionSelector::SupportedMachineOperatorFlags() {
   return MachineOperatorBuilder::kFloat64RoundDown |
          MachineOperatorBuilder::kFloat64RoundTruncate |
          MachineOperatorBuilder::kFloat64RoundTiesAway;
   // We omit kWord32ShiftIsSafe as s[rl]w use 0x3f as a mask rather than 0x1f.
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8