[turbofan] Add backend support for load/store float32 values.

src/compiler/x64/instruction-selector-x64.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"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
@@ skipping 44 matching lines @@
 };
 
 
 void InstructionSelector::VisitLoad(Node* node) {
   MachineType rep = RepresentationOf(OpParameter<MachineType>(node));
   MachineType typ = TypeOf(OpParameter<MachineType>(node));
   X64OperandGenerator g(this);
   Node* base = node->InputAt(0);
   Node* index = node->InputAt(1);
 
-  InstructionOperand* output = rep == kRepFloat64
+  InstructionOperand* output = (rep == kRepFloat32 || rep == kRepFloat64)
                                    ? g.DefineAsDoubleRegister(node)
                                    : g.DefineAsRegister(node);
   ArchOpcode opcode;
   // TODO(titzer): signed/unsigned small loads
   switch (rep) {
+    case kRepFloat32:
+      opcode = kX64Movss;
+      break;
     case kRepFloat64:
       opcode = kX64Movsd;
       break;
     case kRepBit:  // Fall through.
     case kRepWord8:
       opcode = typ == kTypeInt32 ? kX64Movsxbl : kX64Movzxbl;
       break;
     case kRepWord16:
       opcode = typ == kTypeInt32 ? kX64Movsxwl : kX64Movzxwl;
       break;
@@ skipping 37 matching lines @@
     //                and pass them here instead of using fixed regs
     // TODO(dcarney): handle immediate indices.
     InstructionOperand* temps[] = {g.TempRegister(rcx), g.TempRegister(rdx)};
     Emit(kX64StoreWriteBarrier, NULL, g.UseFixed(base, rbx),
          g.UseFixed(index, rcx), g.UseFixed(value, rdx), ARRAY_SIZE(temps),
          temps);
     return;
   }
   DCHECK_EQ(kNoWriteBarrier, store_rep.write_barrier_kind);
   InstructionOperand* val;
-  if (rep == kRepFloat64) {
+  if (rep == kRepFloat32 || rep == kRepFloat64) {
     val = g.UseDoubleRegister(value);
   } else {
     if (g.CanBeImmediate(value)) {
       val = g.UseImmediate(value);
     } else if (rep == kRepWord8 || rep == kRepBit) {
       val = g.UseByteRegister(value);
     } else {
       val = g.UseRegister(value);
     }
   }
   ArchOpcode opcode;
   switch (rep) {
+    case kRepFloat32:
+      opcode = kX64Movss;
+      break;
     case kRepFloat64:
       opcode = kX64Movsd;
       break;
     case kRepBit:  // Fall through.
     case kRepWord8:
       opcode = kX64Movb;
       break;
     case kRepWord16:
       opcode = kX64Movw;
       break;
@@ skipping 585 matching lines @@
     DCHECK(deoptimization == NULL && continuation == NULL);
     Emit(kPopStack |
              MiscField::encode(static_cast<int>(buffer.pushed_nodes.size())),
          NULL);
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8