Inline of Float64x2 operations round 1

runtime/vm/assembler_x64_test.cc

Index: runtime/vm/assembler_x64_test.cc
diff --git a/runtime/vm/assembler_x64_test.cc b/runtime/vm/assembler_x64_test.cc
index 38567f0cefe28065dea29e1ffd239ffc7f994893..8892ed40eae65e14af257e89916bd680bf7a67ec 100644
--- a/runtime/vm/assembler_x64_test.cc
+++ b/runtime/vm/assembler_x64_test.cc
@@ -1638,6 +1638,30 @@ ASSEMBLER_TEST_RUN(PackedDoubleMax, test) {
 }
 
 
+ASSEMBLER_TEST_GENERATE(PackedDoubleShuffle, assembler) {
+  static const struct ALIGN16 {
+    double a;
+    double b;
+  } constant0 = { 2.0, 9.0 };
+  __ movq(RAX, Immediate(reinterpret_cast<uword>(&constant0)));
+  __ movups(XMM10, Address(RAX, 0));
+  // Splat Y across all lanes.
+  __ shufpd(XMM10, XMM10, Immediate(0x33));
+  // Splat X across all lanes.
+  __ shufpd(XMM10, XMM10, Immediate(0x0));
+  // Set return value.
+  __ movaps(XMM0, XMM10);
+  __ ret();
+}
+
+
+ASSEMBLER_TEST_RUN(PackedDoubleShuffle, test) {
+  typedef double (*PackedDoubleShuffle)();
+  double res = reinterpret_cast<PackedDoubleShuffle>(test->entry())();
+  EXPECT_FLOAT_EQ(9.0, res, 0.000001f);
+}
+
+
 ASSEMBLER_TEST_GENERATE(PackedDoubleToSingle, assembler) {
   static const struct ALIGN16 {
     double a;