diff options
| author | Quentin Colombet <quentin.colombet@gmail.com> | 2019-02-07 21:27:23 +0000 |
|---|---|---|
| committer | Quentin Colombet <quentin.colombet@gmail.com> | 2019-02-07 21:27:23 +0000 |
| commit | 96f54de8ff5d357fadcf474823f70288561923bf (patch) | |
| tree | 5f458880c0e8823862215080eafd91f82ce0447e /llvm/tools/llvm-readobj | |
| parent | 82bf8e82c96b79fcafea5d0026feab24a270e9af (diff) | |
| download | bcm5719-llvm-96f54de8ff5d357fadcf474823f70288561923bf.tar.gz bcm5719-llvm-96f54de8ff5d357fadcf474823f70288561923bf.zip | |
[InstCombine] Optimize `atomicrmw <op>, 0` into `load atomic` when possible
This commit teaches InstCombine how to replace an atomicrmw operation
into a simple load atomic.
For a given `atomicrmw <op>`, this is possible when:
1. The ordering of that operation is compatible with a load (i.e.,
anything that doesn't have a release semantic).
2. <op> does not modify the value being stored
Differential Revision: https://reviews.llvm.org/D57854
llvm-svn: 353471
Diffstat (limited to 'llvm/tools/llvm-readobj')
0 files changed, 0 insertions, 0 deletions
