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| author | Chris Lattner <sabre@nondot.org> | 2011-01-01 20:39:18 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2011-01-01 20:39:18 +0000 |
| commit | 0fd8ee4995193ba8dc24a19ae11cd2614418231a (patch) | |
| tree | 9e36fdd50d182ea4fcc6773e9b69f483ef357f35 /include/llvm/Support/StandardPasses.h | |
| parent | 4d7286083537833880901953d29786cf831affc4 (diff) | |
| download | external_llvm-0fd8ee4995193ba8dc24a19ae11cd2614418231a.tar.gz external_llvm-0fd8ee4995193ba8dc24a19ae11cd2614418231a.tar.bz2 external_llvm-0fd8ee4995193ba8dc24a19ae11cd2614418231a.zip | |
turn on memset idiom recognition by default. Though there are still lots of
limitations, this kicks in dozens of times in the 4 specfp2000 benchmarks,
and hundreds of times in the int part. It also kicks in hundreds of times
in multisource.
This kicks in right before loop deletion, which has the pleasant effect of
deleting loops that *just* do a memset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122664 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/StandardPasses.h')
| -rw-r--r-- | include/llvm/Support/StandardPasses.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/llvm/Support/StandardPasses.h b/include/llvm/Support/StandardPasses.h index a608f2ceab..7e32f1fbae 100644 --- a/include/llvm/Support/StandardPasses.h +++ b/include/llvm/Support/StandardPasses.h @@ -145,6 +145,7 @@ namespace llvm { PM->add(createLoopUnswitchPass(OptimizeSize || OptimizationLevel < 3)); PM->add(createInstructionCombiningPass()); PM->add(createIndVarSimplifyPass()); // Canonicalize indvars + PM->add(createLoopIdiomPass()); // Recognize idioms like memset. PM->add(createLoopDeletionPass()); // Delete dead loops if (UnrollLoops) PM->add(createLoopUnrollPass()); // Unroll small loops |