[x64] Use vcvtlsi2sd when AVX is enabled

test/cctest/test-assembler-x64.cc

Index: test/cctest/test-assembler-x64.cc
diff --git a/test/cctest/test-assembler-x64.cc b/test/cctest/test-assembler-x64.cc
index 86acfc9c2ff0500f8581d644cd44c8cf2f0f486b..8da1b7ac3a8424ac493b22f7e0bceaf549ff30ea 100644
--- a/test/cctest/test-assembler-x64.cc
+++ b/test/cctest/test-assembler-x64.cc
@@ -1359,6 +1359,13 @@ TEST(AssemblerX64AVX_sd) {
     __ vmovsd(xmm5, Operand(rsp, kDoubleSize));
     __ vmovsd(xmm6, xmm5);
     __ vmovapd(xmm3, xmm6);
+
+    __ movl(rdx, Immediate(6));
+    __ vcvtlsi2sd(xmm6, xmm6, rdx);
+    __ movl(Operand(rsp, 0), Immediate(5));
+    __ vcvtlsi2sd(xmm7, xmm7, Operand(rsp, 0));
+    __ vsubsd(xmm7, xmm6, xmm7);  // xmm7 is 1.0
+    __ vmulsd(xmm1, xmm1, xmm7);
     __ addq(rsp, Immediate(kDoubleSize * 2));
 
     __ vucomisd(xmm3, xmm1);