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| author | Vedant Kumar <vsk@apple.com> | 2019-11-07 11:19:41 -0800 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2019-11-07 11:19:41 -0800 |
| commit | a087b78bc4c31be5a82eda62f1e4c7fe1fec14ad (patch) | |
| tree | 075175a773611e7a5a71fcfe899359ad6e5fc52a /clang/lib/CodeGen/CodeGenModule.h | |
| parent | ff9d732887385e6f3e516769419dd64b406d81d8 (diff) | |
| download | bcm5719-llvm-a087b78bc4c31be5a82eda62f1e4c7fe1fec14ad.tar.gz bcm5719-llvm-a087b78bc4c31be5a82eda62f1e4c7fe1fec14ad.zip | |
Wrong debug info generated at -O2 (-O0 is correct)
Instcombiner pass was erasing trivially dead instruction without updating dependent llvm.dbg.value.
which was not showing programmer current state of variables while debugging.
As a part of this fix I did following,
Iterate throught all the users (llvm.dbg) of a instruction which is trivially dead and set each if them undef, Before deleting the instruction.
Now user will see optimized out, when try to print those variables.
This fixes
https://bugs.llvm.org/show_bug.cgi?id=43893
This is my first fix to llvm.
Patch by kamlesh kumar!
Differential Revision: https://reviews.llvm.org/D69809
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.h')
0 files changed, 0 insertions, 0 deletions
