[ia32] Introduce vex prefix version of float64 arithmetic binop

test/cctest/test-disasm-ia32.cc

Index: test/cctest/test-disasm-ia32.cc
diff --git a/test/cctest/test-disasm-ia32.cc b/test/cctest/test-disasm-ia32.cc
index 755c9d55f2e7ecd121ee2ff5f2039bbc6cfd3823..fb0c56283f6c388da054a0ad8bcbd280b14bc55c 100644
--- a/test/cctest/test-disasm-ia32.cc
+++ b/test/cctest/test-disasm-ia32.cc
@@ -471,6 +471,21 @@ TEST(DisasmIa320) {
     }
   }
 
+  // AVX instruction
+  {
+    if (CpuFeatures::IsSupported(AVX)) {
+      CpuFeatureScope scope(&assm, AVX);
+      __ vaddsd(xmm0, xmm1, xmm2);
+      __ vaddsd(xmm0, xmm1, Operand(ebx, ecx, times_4, 10000));
+      __ vmulsd(xmm0, xmm1, xmm2);
+      __ vmulsd(xmm0, xmm1, Operand(ebx, ecx, times_4, 10000));
+      __ vsubsd(xmm0, xmm1, xmm2);
+      __ vsubsd(xmm0, xmm1, Operand(ebx, ecx, times_4, 10000));
+      __ vdivsd(xmm0, xmm1, xmm2);
+      __ vdivsd(xmm0, xmm1, Operand(ebx, ecx, times_4, 10000));
+    }
+  }
+
   // xchg.
   {
     __ xchg(eax, eax);