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| author | Max Kazantsev <max.kazantsev@azul.com> | 2018-06-13 02:25:32 +0000 |
|---|---|---|
| committer | Max Kazantsev <max.kazantsev@azul.com> | 2018-06-13 02:25:32 +0000 |
| commit | 0ed79620c6d2ff008a483d62f51b21e69f5bfac6 (patch) | |
| tree | 9fcfa1fc38b810aa083003a93c02883ca5d975f5 /llvm/utils | |
| parent | 8472ec9663a5131b04abd01bff1fcd778c9b19c8 (diff) | |
| download | bcm5719-llvm-0ed79620c6d2ff008a483d62f51b21e69f5bfac6.tar.gz bcm5719-llvm-0ed79620c6d2ff008a483d62f51b21e69f5bfac6.zip | |
[SimplifyIndVars] Ignore dead users
IndVarSimplify sometimes makes transforms basing on users that are trivially dead. In particular,
if DCE wasn't run before it, there may be a dead `sext/zext` in loop that will trigger widening
transforms, however it makes no sense to do it.
This patch teaches IndVarsSimplify ignore the mist trivial cases of that.
Differential Revision: https://reviews.llvm.org/D47974
Reviewed By: sanjoy
llvm-svn: 334567
Diffstat (limited to 'llvm/utils')
0 files changed, 0 insertions, 0 deletions
