[turbofan] Add backend support for float32.

src/compiler/arm/instruction-selector-arm.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/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Adds Arm-specific methods for generating InstructionOperands.
-class ArmOperandGenerator FINAL : public OperandGenerator {
+class ArmOperandGenerator : public OperandGenerator {
  public:
   explicit ArmOperandGenerator(InstructionSelector* selector)
       : OperandGenerator(selector) {}
 
   InstructionOperand* UseOperand(Node* node, InstructionCode opcode) {
     if (CanBeImmediate(node, opcode)) {
       return UseImmediate(node);
     }
     return UseRegister(node);
   }
@@ skipping 17 matching lines @@
         return ImmediateFitsAddrMode1Instruction(value) ||
                ImmediateFitsAddrMode1Instruction(-value);
 
       case kArmTst:
       case kArmTeq:
       case kArmOrr:
       case kArmEor:
       case kArmRsb:
         return ImmediateFitsAddrMode1Instruction(value);
 
-      case kArmVldr32:
-      case kArmVstr32:
-      case kArmVldr64:
-      case kArmVstr64:
+      case kArmVldrF32:
+      case kArmVstrF32:
+      case kArmVldrF64:
+      case kArmVstrF64:
         return value >= -1020 && value <= 1020 && (value % 4) == 0;
 
       case kArmLdrb:
       case kArmLdrsb:
       case kArmStrb:
       case kArmLdr:
       case kArmStr:
       case kArmStoreWriteBarrier:
         return value >= -4095 && value <= 4095;
 
@@ skipping 18 matching lines @@
       case kArmVcmpF64:
       case kArmVaddF64:
       case kArmVsubF64:
       case kArmVmulF64:
       case kArmVmlaF64:
       case kArmVmlsF64:
       case kArmVdivF64:
       case kArmVmodF64:
       case kArmVnegF64:
       case kArmVsqrtF64:
+      case kArmVcvtF32F64:
+      case kArmVcvtF64F32:
       case kArmVcvtF64S32:
       case kArmVcvtF64U32:
       case kArmVcvtS32F64:
       case kArmVcvtU32F64:
       case kArmPush:
         return false;
     }
     UNREACHABLE();
     return false;
   }
@@ skipping 180 matching lines @@
 void InstructionSelector::VisitLoad(Node* node) {
   MachineType rep = RepresentationOf(OpParameter<LoadRepresentation>(node));
   MachineType typ = TypeOf(OpParameter<LoadRepresentation>(node));
   ArmOperandGenerator g(this);
   Node* base = node->InputAt(0);
   Node* index = node->InputAt(1);
 
   ArchOpcode opcode;
   switch (rep) {
     case kRepFloat32:
-      opcode = kArmVldr32;
+      opcode = kArmVldrF32;
       break;
     case kRepFloat64:
-      opcode = kArmVldr64;
+      opcode = kArmVldrF64;
       break;
     case kRepBit:  // Fall through.
     case kRepWord8:
       opcode = typ == kTypeUint32 ? kArmLdrb : kArmLdrsb;
       break;
     case kRepWord16:
       opcode = typ == kTypeUint32 ? kArmLdrh : kArmLdrsh;
       break;
     case kRepTagged:  // Fall through.
     case kRepWord32:
@@ skipping 31 matching lines @@
     Emit(kArmStoreWriteBarrier, NULL, g.UseFixed(base, r4),
          g.UseFixed(index, r5), g.UseFixed(value, r6), arraysize(temps),
          temps);
     return;
   }
   DCHECK_EQ(kNoWriteBarrier, store_rep.write_barrier_kind());
 
   ArchOpcode opcode;
   switch (rep) {
     case kRepFloat32:
-      opcode = kArmVstr32;
+      opcode = kArmVstrF32;
       break;
     case kRepFloat64:
-      opcode = kArmVstr64;
+      opcode = kArmVstrF64;
       break;
     case kRepBit:  // Fall through.
     case kRepWord8:
       opcode = kArmStrb;
       break;
     case kRepWord16:
       opcode = kArmStrh;
       break;
     case kRepTagged:  // Fall through.
     case kRepWord32:
@@ skipping 313 matching lines @@
 void InstructionSelector::VisitInt32Mod(Node* node) {
   VisitMod(this, node, kArmSdiv, kArmVcvtF64S32, kArmVcvtS32F64);
 }
 
 
 void InstructionSelector::VisitInt32UMod(Node* node) {
   VisitMod(this, node, kArmUdiv, kArmVcvtF64U32, kArmVcvtU32F64);
 }
 
 
+void InstructionSelector::VisitChangeFloat32ToFloat64(Node* node) {
+  ArmOperandGenerator g(this);
+  Emit(kArmVcvtF64F32, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)));
+}
+
+
 void InstructionSelector::VisitChangeInt32ToFloat64(Node* node) {
   ArmOperandGenerator g(this);
   Emit(kArmVcvtF64S32, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitChangeUint32ToFloat64(Node* node) {
   ArmOperandGenerator g(this);
   Emit(kArmVcvtF64U32, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitChangeFloat64ToInt32(Node* node) {
   ArmOperandGenerator g(this);
   Emit(kArmVcvtS32F64, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitChangeFloat64ToUint32(Node* node) {
   ArmOperandGenerator g(this);
   Emit(kArmVcvtU32F64, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
+void InstructionSelector::VisitTruncateFloat64ToFloat32(Node* node) {
+  ArmOperandGenerator g(this);
+  Emit(kArmVcvtF32F64, g.DefineAsRegister(node),
+       g.UseRegister(node->InputAt(0)));
+}
+
+
 void InstructionSelector::VisitFloat64Add(Node* node) {
   ArmOperandGenerator g(this);
   Int32BinopMatcher m(node);
   if (m.left().IsFloat64Mul() && CanCover(node, m.left().node())) {
     Int32BinopMatcher mleft(m.left().node());
     Emit(kArmVmlaF64, g.DefineSameAsFirst(node),
          g.UseRegister(m.right().node()), g.UseRegister(mleft.left().node()),
          g.UseRegister(mleft.right().node()));
     return;
   }
@@ skipping 217 matching lines @@
   } else {
     DCHECK(cont->IsSet());
     Emit(cont->Encode(kArmVcmpF64), g.DefineAsRegister(cont->result()),
          g.UseRegister(m.left().node()), g.UseRegister(m.right().node()));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8