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PPC: fix DCHECK failure on reg aliasing

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Change-Id: I2df302a4bed3775dfdf15cc3d1797c50229cc997
Reviewed-on: https://chromium-review.googlesource.com/1194582
Reviewed-by: Joran Siu <joransiu@ca.ibm.com>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#55469}
This commit is contained in:
Junliang Yan 2018-08-28 13:06:02 -04:00 committed by Commit Bot
parent d6de4af573
commit 4b0f5711ec
1 changed files with 8 additions and 4 deletions
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12
src/ppc/macro-assembler-ppc.cc
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@ -2908,10 +2908,14 @@ void TurboAssembler::SwapP(Register src, MemOperand dst, Register scratch) {
void TurboAssembler::SwapP(MemOperand src, MemOperand dst, Register scratch_0,
Register scratch_1) {
if (src.ra() != r0) DCHECK(!AreAliased(src.ra(), scratch_0, scratch_1));
if (src.rb() != r0) DCHECK(!AreAliased(src.rb(), scratch_0, scratch_1));
if (dst.ra() != r0) DCHECK(!AreAliased(dst.ra(), scratch_0, scratch_1));
if (dst.rb() != r0) DCHECK(!AreAliased(dst.rb(), scratch_0, scratch_1));
if (src.ra() != r0 && src.ra().is_valid())
DCHECK(!AreAliased(src.ra(), scratch_0, scratch_1));
if (src.rb() != r0 && src.rb().is_valid())
DCHECK(!AreAliased(src.rb(), scratch_0, scratch_1));
if (dst.ra() != r0 && dst.ra().is_valid())
DCHECK(!AreAliased(dst.ra(), scratch_0, scratch_1));
if (dst.rb() != r0 && dst.rb().is_valid())
DCHECK(!AreAliased(dst.rb(), scratch_0, scratch_1));
DCHECK(!AreAliased(scratch_0, scratch_1));
if (is_int16(src.offset()) || is_int16(dst.offset())) {
if (!is_int16(src.offset())) {