[turbofan]IA: ChangeFloat32ToFloat64 supports mem operand

test/cctest/compiler/test-run-machops.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 <functional>
 #include <limits>
 
 #include "src/base/bits.h"
 #include "src/compiler/generic-node-inl.h"
 #include "test/cctest/cctest.h"
@@ skipping 4289 matching lines @@
       m.ChangeFloat32ToFloat64(m.LoadFromPointer(&expected, kMachFloat32)));
   m.Return(m.Int32Constant(0));
   FOR_FLOAT32_INPUTS(i) {
     expected = *i;
     CHECK_EQ(0, m.Call());
     CHECK_EQ(expected, actual);
   }
 }
 
 
+TEST(RunChangeFloat32ToFloat64_spilled) {
+  RawMachineAssemblerTester<int32_t> m;
+  const int kNumInputs = 32;
+  int32_t magic = 0x786234;
+  float input[kNumInputs];
+  double result[kNumInputs];
+  Node* input_node[kNumInputs];
+
+  for (int i = 0; i < kNumInputs; i++) {
+    input_node[i] =
+        m.Load(kMachFloat32, m.PointerConstant(&input), m.Int32Constant(i * 4));
+  }
+
+  for (int i = 0; i < kNumInputs; i++) {
+    m.Store(kMachFloat64, m.PointerConstant(&result), m.Int32Constant(i * 8),
+            m.ChangeFloat32ToFloat64(input_node[i]));
+  }
+
+  m.Return(m.Int32Constant(magic));
+
+  for (int i = 0; i < kNumInputs; i++) {
+    input[i] = 100.9f + i;
+  }
+
+  CHECK_EQ(magic, m.Call());
+
+  for (int i = 0; i < kNumInputs; i++) {
+    CHECK_EQ(result[i], static_cast<double>(input[i]));
+  }
+}
+
+
 TEST(RunTruncateFloat64ToFloat32) {
   float actual = 0.0f;
   double input = 0.0;
   RawMachineAssemblerTester<int32_t> m;
   m.StoreToPointer(
       &actual, kMachFloat32,
       m.TruncateFloat64ToFloat32(m.LoadFromPointer(&input, kMachFloat64)));
   m.Return(m.Int32Constant(0));
   FOR_FLOAT64_INPUTS(i) {
     input = *i;
@@ skipping 10 matching lines @@
     float actual = *i;
     RawMachineAssemblerTester<int32_t> m;
     m.StoreToPointer(&actual, kMachFloat32, m.Float32Constant(expected));
     m.Return(m.Int32Constant(0));
     CHECK_EQ(0, m.Call());
     CHECK_EQ(expected, actual);
   }
 }
 
 #endif  // V8_TURBOFAN_TARGET