diff options
| author | Elliot Colp <colpell@ca.ibm.com> | 2016-08-23 14:03:02 +0000 |
|---|---|---|
| committer | Elliot Colp <colpell@ca.ibm.com> | 2016-08-23 14:03:02 +0000 |
| commit | a4092104cb21ba98edf8ed48ce5640bb0725c406 (patch) | |
| tree | 25687e7f94247696dc62348674a42167d4c3b735 /clang-tools-extra/test/clang-tidy/custom-diagnostics.cpp | |
| parent | fc4430ea454aec7ca0071e847bc2b8882f1ccbec (diff) | |
| download | bcm5719-llvm-a4092104cb21ba98edf8ed48ce5640bb0725c406.tar.gz bcm5719-llvm-a4092104cb21ba98edf8ed48ce5640bb0725c406.zip | |
Fix SystemZ hang caused by r279105
The change in r279105 causes an infinite loop in some cases, as it sets the upper bits of an AND mask constant, which DAGCombiner::SimplifyDemandedBits then unsets.
This patch reverts that part of the behaviour, instead relying on .td peepholes to perform the transformation to NILL. I reapplied my original fix for the problem addressed by r279105 (unsetting the upper bits, which prevents a compiler abort for a different reason).
Differential Revision: https://reviews.llvm.org/D23781
llvm-svn: 279515
Diffstat (limited to 'clang-tools-extra/test/clang-tidy/custom-diagnostics.cpp')
0 files changed, 0 insertions, 0 deletions
