[turbofan] IA: TruncateFloat64ToFloat32 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 3302 matching lines @@
   for (int i = 0; i < kNumInputs; i++) {
     if (i % 2) {
       CHECK_UINT32_EQ(result[i], static_cast<uint32_t>(100 + i + 2147483648u));
     } else {
       CHECK_UINT32_EQ(result[i], static_cast<uint32_t>(100 + i));
     }
   }
 }
 
 
+TEST(RunTruncateFloat64ToFloat32_spilled) {
+  RawMachineAssemblerTester<uint32_t> m;
+  const int kNumInputs = 32;
+  int32_t magic = 0x786234;
+  double input[kNumInputs];
+  float result[kNumInputs];
+  Node* input_node[kNumInputs];
+
+  for (int i = 0; i < kNumInputs; i++) {
+    input_node[i] =
+        m.Load(kMachFloat64, m.PointerConstant(&input), m.Int32Constant(i * 8));
+  }
+
+  for (int i = 0; i < kNumInputs; i++) {
+    m.Store(kMachFloat32, m.PointerConstant(&result), m.Int32Constant(i * 4),
+            m.TruncateFloat64ToFloat32(input_node[i]));
+  }
+
+  m.Return(m.Int32Constant(magic));
+
+  for (int i = 0; i < kNumInputs; i++) {
+    input[i] = 0.1 + i;
+  }
+
+  CHECK_EQ(magic, m.Call());
+
+  for (int i = 0; i < kNumInputs; i++) {
+    CHECK_EQ(result[i], DoubleToFloat32(input[i]));
+  }
+}
+
+
 TEST(RunDeadChangeFloat64ToInt32) {
   RawMachineAssemblerTester<int32_t> m;
   const int magic = 0x88abcda4;
   m.ChangeFloat64ToInt32(m.Float64Constant(999.78));
   m.Return(m.Int32Constant(magic));
   CHECK_EQ(magic, m.Call());
 }
 
 
 TEST(RunDeadChangeInt32ToFloat64) {
@@ skipping 997 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