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| author | Rong Xu <xur@google.com> | 2017-11-14 21:44:09 +0000 |
|---|---|---|
| committer | Rong Xu <xur@google.com> | 2017-11-14 21:44:09 +0000 |
| commit | 3573d8da3657ac62b4ebe2c385c5e6aad99f1fe6 (patch) | |
| tree | b4f9f963bfafc0d42918189ba81ac965838218e9 /llvm/lib/Transforms/Utils/Local.cpp | |
| parent | 7007f07664dcb92bd9467d7d7cbbbc34cadcba65 (diff) | |
| download | llvm-3573d8da3657ac62b4ebe2c385c5e6aad99f1fe6.zip llvm-3573d8da3657ac62b4ebe2c385c5e6aad99f1fe6.tar.gz llvm-3573d8da3657ac62b4ebe2c385c5e6aad99f1fe6.tar.bz2 | |
[CodeGen] Peel off the dominant case in switch statement in lowering
This patch peels off the top case in switch statement into a branch if the
probability exceeds a threshold. This will help the branch prediction and
avoids the extra compares when lowering into chain of branches.
Differential Revision: http://reviews.llvm.org/D39262
llvm-svn: 318202
Diffstat (limited to 'llvm/lib/Transforms/Utils/Local.cpp')
0 files changed, 0 insertions, 0 deletions