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

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 496 matching lines @@
         __ cvtlsi2sd(i.OutputDoubleRegister(), input.operand);
       }
       break;
     }
     case kSSEUint32ToFloat64: {
       // TODO(turbofan): X64 SSE cvtqsi2sd should support operands.
       __ cvtqsi2sd(i.OutputDoubleRegister(), i.InputRegister(0));
       break;
     }
 
-    case kX64Movsd:
-      if (instr->HasOutput()) {
-        __ movsd(i.OutputDoubleRegister(), i.MemoryOperand());
-      } else {
-        int index = 0;
-        Operand operand = i.MemoryOperand(&index);
-        __ movsd(operand, i.InputDoubleRegister(index));
-      }
-      break;
     case kX64Movsxbl:
       __ movsxbl(i.OutputRegister(), i.MemoryOperand());
       break;
     case kX64Movzxbl:
       __ movzxbl(i.OutputRegister(), i.MemoryOperand());
       break;
     case kX64Movb: {
       int index = 0;
       Operand operand = i.MemoryOperand(&index);
       if (HasImmediateInput(instr, index)) {
@@ skipping 56 matching lines @@
       } else {
         int index = 0;
         Operand operand = i.MemoryOperand(&index);
         if (HasImmediateInput(instr, index)) {
           __ movq(operand, i.InputImmediate(index));
         } else {
           __ movq(operand, i.InputRegister(index));
         }
       }
       break;
+    case kX64Movss:
+      if (instr->HasOutput()) {
+        __ movss(i.OutputDoubleRegister(), i.MemoryOperand());
+        __ cvtss2sd(i.OutputDoubleRegister(), i.OutputDoubleRegister());
+      } else {
+        int index = 0;
+        Operand operand = i.MemoryOperand(&index);
+        __ cvtsd2ss(xmm0, i.InputDoubleRegister(index));
+        __ movss(operand, xmm0);
+      }
+      break;
+    case kX64Movsd:
+      if (instr->HasOutput()) {
+        __ movsd(i.OutputDoubleRegister(), i.MemoryOperand());
+      } else {
+        int index = 0;
+        Operand operand = i.MemoryOperand(&index);
+        __ movsd(operand, i.InputDoubleRegister(index));
+      }
+      break;
     case kX64StoreWriteBarrier: {
       Register object = i.InputRegister(0);
       Register index = i.InputRegister(1);
       Register value = i.InputRegister(2);
       __ movsxlq(index, index);
       __ movq(Operand(object, index, times_1, 0), value);
       __ leaq(index, Operand(object, index, times_1, 0));
       SaveFPRegsMode mode = code_->frame()->DidAllocateDoubleRegisters()
                                 ? kSaveFPRegs
                                 : kDontSaveFPRegs;
@@ skipping 380 matching lines @@
 }
 
 
 void CodeGenerator::AddNopForSmiCodeInlining() { __ nop(); }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8