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| author | Jinsong Ji <jji@us.ibm.com> | 2021-01-05 15:37:16 +0000 |
|---|---|---|
| committer | Jinsong Ji <jji@us.ibm.com> | 2021-01-05 16:18:34 +0000 |
| commit | f26bc0ddd508edad7e3838850dfcb6b960d6e681 (patch) | |
| tree | b63b47468a7d84e4b0714015eb299fe58f3a79a4 /clang/unittests/Frontend/CompilerInvocationTest.cpp | |
| parent | 51d5991f04dda76c2f07123569b5c31ed3dfcfe8 (diff) | |
| download | llvm-f26bc0ddd508edad7e3838850dfcb6b960d6e681.zip llvm-f26bc0ddd508edad7e3838850dfcb6b960d6e681.tar.gz llvm-f26bc0ddd508edad7e3838850dfcb6b960d6e681.tar.bz2 | |
[RegisterClassInfo] Return non-zero for RC without allocatable reg
In some case, the RC may have 0 allocatable reg.
eg: VRSAVERC in PowerPC, which has only 1 reg, but it is also reserved.
The curreent implementation will keep calling the computePSetLimit because
getRegPressureSetLimit assume computePSetLimit will return a non-zero value.
The fix simply early return the value from TableGen for such special case.
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D92907
Diffstat (limited to 'clang/unittests/Frontend/CompilerInvocationTest.cpp')
0 files changed, 0 insertions, 0 deletions