Simplify HUnaryMathOperation::Canonicalize.

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 1c3b3801578c9186865e8b25809231f3b1101a93..fb6a7764d1ece4477a4b352ddcc2b8cfc1942aa5 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -987,7 +987,7 @@ void LCodeGen::DoModI(LModI* instr) {
   HMod* hmod = instr->hydrogen();
   HValue* left = hmod->left();
   HValue* right = hmod->right();
-  if (hmod->HasPowerOf2Divisor()) {
+  if (hmod->RightIsPowerOf2()) {
     // TODO(svenpanne) We should really do the strength reduction on the
     // Hydrogen level.
     Register left_reg = ToRegister(instr->left());
@@ -1153,7 +1153,7 @@ void LCodeGen::DoMathFloorOfDiv(LMathFloorOfDiv* instr) {
 
 
 void LCodeGen::DoDivI(LDivI* instr) {
-  if (!instr->is_flooring() && instr->hydrogen()->HasPowerOf2Divisor()) {
+  if (!instr->is_flooring() && instr->hydrogen()->RightIsPowerOf2()) {
     Register dividend = ToRegister(instr->left());
     int32_t divisor =
         HConstant::cast(instr->hydrogen()->right())->Integer32Value();