Intrinsify Double.toInt.

runtime/vm/assembler_x64_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
@@ skipping 1368 matching lines @@
 
 
 ASSEMBLER_TEST_GENERATE(Int64ToDoubleConversion, assembler) {
   __ movq(RDX, Immediate(12LL << 32));
   __ cvtsi2sd(XMM0, RDX);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Int64ToDoubleConversion, entry) {
-  typedef double (*IntToDoubleConversionCode)();
-  double res = reinterpret_cast<IntToDoubleConversionCode>(entry)();
+  typedef double (*Int64ToDoubleConversionCode)();
+  double res = reinterpret_cast<Int64ToDoubleConversionCode>(entry)();
   EXPECT_FLOAT_EQ(static_cast<double>(12LL << 32), res, 0.001);
 }
 
 
+ASSEMBLER_TEST_GENERATE(DoubleToInt64Conversion, assembler) {
+  __ movq(RAX, Immediate(bit_cast<int64_t, double>(12.3)));
+  __ pushq(RAX);
+  __ movsd(XMM6, Address(RSP, 0));
+  __ popq(RAX);
+  __ cvttsd2siq(RDX, XMM6);
+  __ movq(RAX, RDX);
+  __ ret();
+}
+
+
+ASSEMBLER_TEST_RUN(DoubleToInt64Conversion, entry) {
+  typedef int64_t (*DoubleToInt64ConversionCode)();
+  int64_t res = reinterpret_cast<DoubleToInt64ConversionCode>(entry)();
+  EXPECT_EQ(12, res);
+}
+
+
 ASSEMBLER_TEST_GENERATE(TestObjectCompare, assembler) {
   ObjectStore* object_store = Isolate::Current()->object_store();
   const Object& obj = Object::ZoneHandle(object_store->smi_class());
   Label fail;
   __ LoadObject(RAX, obj);
   __ CompareObject(RAX, obj);
   __ j(NOT_EQUAL, &fail);
   __ LoadObject(RCX, obj);
   __ CompareObject(RCX, obj);
   __ j(NOT_EQUAL, &fail);
@@ skipping 302 matching lines @@
   EXPECT_EQ(0, res);
   res = reinterpret_cast<ExtractSignBits>(entry)(-1.0);
   EXPECT_EQ(1, res);
   res = reinterpret_cast<ExtractSignBits>(entry)(-0.0);
   EXPECT_EQ(1, res);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64