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| author | Nick Lewycky <nicholas@mxc.ca> | 2008-11-20 04:36:13 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2008-11-20 04:36:13 +0000 |
| commit | d43390498291c475a6e277fcd5d3bbf5abd3b41e (patch) | |
| tree | ee820c5cd2ce194f0b0147a4e2b9f1f0cecb5e17 /lib/Analysis/ConstantFolding.cpp | |
| parent | ee85bbcae15e6a2e400ce0f44791d753b37a6df6 (diff) | |
| download | external_llvm-d43390498291c475a6e277fcd5d3bbf5abd3b41e.zip external_llvm-d43390498291c475a6e277fcd5d3bbf5abd3b41e.tar.gz external_llvm-d43390498291c475a6e277fcd5d3bbf5abd3b41e.tar.bz2 | |
undef beats zero. Fix this missed optimization opportunity. Patch by Matt Elder!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59705 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | lib/Analysis/ConstantFolding.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp index 9f94ee3..597eecc 100644 --- a/lib/Analysis/ConstantFolding.cpp +++ b/lib/Analysis/ConstantFolding.cpp @@ -281,7 +281,7 @@ static Constant *FoldBitCast(Constant *C, const Type *DestTy, Constant *llvm::ConstantFoldInstruction(Instruction *I, const TargetData *TD) { if (PHINode *PN = dyn_cast<PHINode>(I)) { if (PN->getNumIncomingValues() == 0) - return Constant::getNullValue(PN->getType()); + return UndefValue::get(PN->getType()); Constant *Result = dyn_cast<Constant>(PN->getIncomingValue(0)); if (Result == 0) return 0; |