commit 2bcb43111edf7bf99fe409ff3e9c76a285e54c25
author Nicolas Geoffray <ngeoffray@google.com> Wed Jul 01 12:22:56 2015 +0100
committer Nicolas Geoffray <ngeoffray@google.com> Wed Jul 01 12:46:09 2015 +0100
tree 3ee8cbf5ef612756f2d433f3c14bd475323dec8d
parent 806af26f1a8f107cb4f4430ceec8dc9f360f3795

Use CompareAndBranchIf(Non)Zero when applicable.

Now that we relocate branches, we can try make more use of cbz/cbnz.

Change-Id: I93ca64107f34eb3c43f2e7102ea90453113dad7a

compiler/utils/arm/assembler_thumb2.cc

diff --git a/compiler/utils/arm/assembler_thumb2.cc b/compiler/utils/arm/assembler_thumb2.cc
index f9e1ac6..2dde014 100644
--- a/compiler/utils/arm/assembler_thumb2.cc
+++ b/compiler/utils/arm/assembler_thumb2.cc
@@ -3341,7 +3341,7 @@
 
 
 void Thumb2Assembler::CompareAndBranchIfZero(Register r, Label* label) {
-  if (CanRelocateBranches() && IsLowRegister(r)) {
+  if (CanRelocateBranches() && IsLowRegister(r) && !label->IsBound()) {
     cbz(r, label);
   } else {
     cmp(r, ShifterOperand(0));
@@ -3351,7 +3351,7 @@
 
 
 void Thumb2Assembler::CompareAndBranchIfNonZero(Register r, Label* label) {
-  if (CanRelocateBranches() && IsLowRegister(r)) {
+  if (CanRelocateBranches() && IsLowRegister(r) && !label->IsBound()) {
     cbnz(r, label);
   } else {
     cmp(r, ShifterOperand(0));