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| author | Wei Mi <wmi@google.com> | 2015-05-14 22:02:54 +0000 |
|---|---|---|
| committer | Wei Mi <wmi@google.com> | 2015-05-14 22:02:54 +0000 |
| commit | 95f7517f1bf0bc4d9dc29a8d07df8395d8abc906 (patch) | |
| tree | eee5e765e77bf33d8200c482415592710f65273b /lib/Transforms/IPO | |
| parent | 42d0f8304e6b66d71f62701290628eb1378e57de (diff) | |
| download | llvm-95f7517f1bf0bc4d9dc29a8d07df8395d8abc906.tar.gz | |
Add another InstCombine pass after LoopUnroll.
This is to cleanup some redundency generated by LoopUnroll pass. Such redundency may not be cleaned up by existing passes after LoopUnroll.
Differential Revision: http://reviews.llvm.org/D9777
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237395 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/IPO')
| -rw-r--r-- | lib/Transforms/IPO/PassManagerBuilder.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/PassManagerBuilder.cpp b/lib/Transforms/IPO/PassManagerBuilder.cpp index 94d419fc7f34..3b21d3f0cb13 100644 --- a/lib/Transforms/IPO/PassManagerBuilder.cpp +++ b/lib/Transforms/IPO/PassManagerBuilder.cpp @@ -382,6 +382,9 @@ void PassManagerBuilder::populateModulePassManager( if (!DisableUnrollLoops) { MPM.add(createLoopUnrollPass()); // Unroll small loops + // LoopUnroll may generate some redundency to cleanup. + MPM.add(createInstructionCombiningPass()); + // This is a barrier pass to avoid combine LICM pass and loop unroll pass // within same loop pass manager. MPM.add(createInstructionSimplifierPass()); |