[x64] Replace addsd, subsd, mulsd, divsd with AVX versions under AVX.

src/x64/codegen-x64.cc

Index: src/x64/codegen-x64.cc
diff --git a/src/x64/codegen-x64.cc b/src/x64/codegen-x64.cc
index b857abf715dd01527ff49003186f687786bb9287..5c297f1a079ac3b535e152884f37b85dd02e4a23 100644
--- a/src/x64/codegen-x64.cc
+++ b/src/x64/codegen-x64.cc
@@ -612,29 +612,29 @@ void MathExpGenerator::EmitMathExp(MacroAssembler* masm,
   __ j(above_equal, &done);
   __ Movsd(double_scratch, Operand(kScratchRegister, 3 * kDoubleSize));
   __ Movsd(result, Operand(kScratchRegister, 4 * kDoubleSize));
-  __ mulsd(double_scratch, input);
-  __ addsd(double_scratch, result);
+  __ Mulsd(double_scratch, input);
+  __ Addsd(double_scratch, result);
   __ Movq(temp2, double_scratch);
-  __ subsd(double_scratch, result);
+  __ Subsd(double_scratch, result);
   __ Movsd(result, Operand(kScratchRegister, 6 * kDoubleSize));
   __ leaq(temp1, Operand(temp2, 0x1ff800));
   __ andq(temp2, Immediate(0x7ff));
   __ shrq(temp1, Immediate(11));
-  __ mulsd(double_scratch, Operand(kScratchRegister, 5 * kDoubleSize));
+  __ Mulsd(double_scratch, Operand(kScratchRegister, 5 * kDoubleSize));
   __ Move(kScratchRegister, ExternalReference::math_exp_log_table());
   __ shlq(temp1, Immediate(52));
   __ orq(temp1, Operand(kScratchRegister, temp2, times_8, 0));
   __ Move(kScratchRegister, ExternalReference::math_exp_constants(0));
-  __ subsd(double_scratch, input);
+  __ Subsd(double_scratch, input);
   __ Movsd(input, double_scratch);
-  __ subsd(result, double_scratch);
-  __ mulsd(input, double_scratch);
-  __ mulsd(result, input);
+  __ Subsd(result, double_scratch);
+  __ Mulsd(input, double_scratch);
+  __ Mulsd(result, input);
   __ Movq(input, temp1);
-  __ mulsd(result, Operand(kScratchRegister, 7 * kDoubleSize));
-  __ subsd(result, double_scratch);
-  __ addsd(result, Operand(kScratchRegister, 8 * kDoubleSize));
-  __ mulsd(result, input);
+  __ Mulsd(result, Operand(kScratchRegister, 7 * kDoubleSize));
+  __ Subsd(result, double_scratch);
+  __ Addsd(result, Operand(kScratchRegister, 8 * kDoubleSize));
+  __ Mulsd(result, input);
 
   __ bind(&done);
 }