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| author | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-03-06 17:48:48 +0000 |
|---|---|---|
| committer | Shuxin Yang <shuxin.llvm@gmail.com> | 2013-03-06 17:48:48 +0000 |
| commit | 408bdad5b4d0eb5afc885738369c2dde01a3b2eb (patch) | |
| tree | 035bee5d212621fc33879ff067049b3a4b09db32 /clang/test/Frontend/unknown-pragmas.c | |
| parent | 41bb7131b39adc7d6d8de60c13776401aff5a9a9 (diff) | |
| download | bcm5719-llvm-408bdad5b4d0eb5afc885738369c2dde01a3b2eb.tar.gz bcm5719-llvm-408bdad5b4d0eb5afc885738369c2dde01a3b2eb.zip | |
Memory Dependence Analysis (not mem-dep test) take advantage of "invariant.load" metadata.
The "invariant.load" metadata indicates the memory unit being accessed is immutable.
A load annotated with this metadata can be moved across any store.
As I am not sure if it is legal to move such loads across barrier/fence, this
change dose not allow such transformation.
rdar://11311484
Thank Arnold for code review.
llvm-svn: 176562
Diffstat (limited to 'clang/test/Frontend/unknown-pragmas.c')
0 files changed, 0 insertions, 0 deletions
