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| author | Hal Finkel <hfinkel@anl.gov> | 2013-02-11 23:02:09 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-02-11 23:02:09 +0000 |
| commit | 8f3359a4b396d3f1a7b2726e02f199be74c62e4c (patch) | |
| tree | 72d4e6d900cacf61d1039bea3b2e09a5059b6e77 /lib/Transforms/Vectorize/BBVectorize.cpp | |
| parent | 86f18eb0b39804cf9cf1d17cdb58f44d8d846545 (diff) | |
| download | llvm-8f3359a4b396d3f1a7b2726e02f199be74c62e4c.tar.gz llvm-8f3359a4b396d3f1a7b2726e02f199be74c62e4c.tar.bz2 llvm-8f3359a4b396d3f1a7b2726e02f199be74c62e4c.tar.xz | |
BBVectorize: Omit unnecessary entries in PairableInstUsers
This map is queried only for instructions in pairs of pairable
instructions; so make sure that only pairs of pairable
instructions are added to the map. This gives a 3.5% speedup
on the csa.ll test case from PR15222.
No functionality change intended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174914 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Vectorize/BBVectorize.cpp')
| -rw-r--r-- | lib/Transforms/Vectorize/BBVectorize.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Transforms/Vectorize/BBVectorize.cpp b/lib/Transforms/Vectorize/BBVectorize.cpp index bf8fca06ff..b14d91dd8e 100644 --- a/lib/Transforms/Vectorize/BBVectorize.cpp +++ b/lib/Transforms/Vectorize/BBVectorize.cpp @@ -1390,8 +1390,10 @@ namespace { (void) trackUsesOfI(Users, WriteSet, I, J); for (DenseSet<Value *>::iterator U = Users.begin(), E = Users.end(); - U != E; ++U) + U != E; ++U) { + if (IsInPair.find(*U) == IsInPair.end()) continue; PairableInstUsers.insert(ValuePair(I, *U)); + } } } |