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| author | David Majnemer <david.majnemer@gmail.com> | 2016-07-15 17:19:24 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2016-07-15 17:19:24 +0000 |
| commit | a940f360cbaa1fb0da984c5cd311efe85a7d88ae (patch) | |
| tree | baffc2b5634d136cf428f8e8d1b6d17499fe246f /llvm/tools/opt/opt.cpp | |
| parent | 3d89db445d1f013a3abb250a1239199a23aae905 (diff) | |
| download | bcm5719-llvm-a940f360cbaa1fb0da984c5cd311efe85a7d88ae.tar.gz bcm5719-llvm-a940f360cbaa1fb0da984c5cd311efe85a7d88ae.zip | |
[AliasAnalysis] Give back AA results for fence instructions
Calling getModRefInfo with a fence resulted in crashes because fences
don't have a memory location. Add a new predicate to Instruction
called isFenceLike which indicates that the instruction mutates memory
but not any single memory location in particular. In practice, it is a
proxy for the set of instructions which "mayWriteToMemory" but cannot be
used with MemoryLocation::get.
This fixes PR28570.
llvm-svn: 275581
Diffstat (limited to 'llvm/tools/opt/opt.cpp')
0 files changed, 0 insertions, 0 deletions
