[x64] Do not use SSE instructions in DoConstructDouble when AVX is enabled.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 234d6b97f67ffe9b5d392ccd92982863b25e648f..993c17461d67dbdaa1b17fb1f8d1a662e3816234 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -5333,11 +5333,10 @@ void LCodeGen::DoConstructDouble(LConstructDouble* instr) {
   Register hi_reg = ToRegister(instr->hi());
   Register lo_reg = ToRegister(instr->lo());
   XMMRegister result_reg = ToDoubleRegister(instr->result());
-  XMMRegister xmm_scratch = double_scratch0();
-  __ Movd(result_reg, hi_reg);
-  __ psllq(result_reg, 32);
-  __ Movd(xmm_scratch, lo_reg);
-  __ orps(result_reg, xmm_scratch);
+  __ movl(kScratchRegister, hi_reg);
+  __ shlq(kScratchRegister, Immediate(32));
+  __ orq(kScratchRegister, lo_reg);
+  __ Movq(result_reg, kScratchRegister);
 }