diff options
| author | Dimitry Andric <dimitry@andric.com> | 2016-06-02 17:30:49 +0000 |
|---|---|---|
| committer | Dimitry Andric <dimitry@andric.com> | 2016-06-02 17:30:49 +0000 |
| commit | 6a482a73d6f05570e45a7f5a4519be42880a2af2 (patch) | |
| tree | 842ec2df3c53aef0de47136398fc6263faaee572 /llvm/lib/CodeGen/TargetInstrInfo.cpp | |
| parent | 6d3bd6866b5a2665e677d6b0483403aa88660afb (diff) | |
| download | bcm5719-llvm-6a482a73d6f05570e45a7f5a4519be42880a2af2.tar.gz bcm5719-llvm-6a482a73d6f05570e45a7f5a4519be42880a2af2.zip | |
Only attempt to detect AVG if SSE2 is available
Summary:
In PR29973 Sanjay Patel reported an assertion failure when a certain
loop was optimized, for a target without SSE2 support. It turned out
this was because of the AVG pattern detection introduced in rL253952.
Prevent the assertion failure by bailing out early in
`detectAVGPattern()`, if the target does not support SSE2.
Also add a minimized test case.
Reviewers: congh, eli.friedman, spatel
Subscribers: emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D20905
llvm-svn: 271548
Diffstat (limited to 'llvm/lib/CodeGen/TargetInstrInfo.cpp')
0 files changed, 0 insertions, 0 deletions
