[x64] Use AVX instructions consistently if available

For float to int conversions and vice versa the MacroAssembler on x64
was using a mix of AVX and non-AVX instructions.
This CL fixes that to consistently use AVX if available.

R=jkummerow@chromium.org

Change-Id: I3aecda9b99881254b24949ced5bed870fdc2a754
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1678361Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62387}

src/codegen/x64/macro-assembler-x64.cc

@@ -917,7 +917,7 @@ void TurboAssembler::Cvtqui2ss(XMMRegister dst, Register src) {
   orq(kScratchRegister, Immediate(1));
   bind(&msb_not_set);
   Cvtqsi2ss(dst, kScratchRegister);
-  addss(dst, dst);
+  Addss(dst, dst);
   bind(&done);
 }
 
@@ -941,7 +941,7 @@ void TurboAssembler::Cvtqui2sd(XMMRegister dst, Register src) {
   orq(kScratchRegister, Immediate(1));
   bind(&msb_not_set);
   Cvtqsi2sd(dst, kScratchRegister);
-  addsd(dst, dst);
+  Addsd(dst, dst);
   bind(&done);
 }
 
@@ -1042,11 +1042,11 @@ void ConvertFloatToUint64(TurboAssembler* tasm, Register dst,
   // and convert it again to see if it is within the uint64 range.
   if (is_double) {
     tasm->Move(kScratchDoubleReg, -9223372036854775808.0);
-    tasm->addsd(kScratchDoubleReg, src);
+    tasm->Addsd(kScratchDoubleReg, src);
     tasm->Cvttsd2siq(dst, kScratchDoubleReg);
   } else {
     tasm->Move(kScratchDoubleReg, -9223372036854775808.0f);
-    tasm->addss(kScratchDoubleReg, src);
+    tasm->Addss(kScratchDoubleReg, src);
     tasm->Cvttss2siq(dst, kScratchDoubleReg);
   }
   tasm->testq(dst, dst);

src/codegen/x64/macro-assembler-x64.h

@@ -132,6 +132,7 @@ class V8_EXPORT_PRIVATE TurboAssembler : public TurboAssemblerBase {
   AVX_OP(Psllq, psllq)
   AVX_OP(Psrld, psrld)
   AVX_OP(Psrlq, psrlq)
+  AVX_OP(Addss, addss)
   AVX_OP(Addsd, addsd)
   AVX_OP(Mulsd, mulsd)
   AVX_OP(Andps, andps)