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| author | Chris Lattner <sabre@nondot.org> | 2004-12-11 17:00:14 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-12-11 17:00:14 +0000 |
| commit | 263b0a1669cc37336b4f480db29aad8465632620 (patch) | |
| tree | 26d32fa44576f150fc116ca2f064e2b3f9d470e3 /llvm/lib | |
| parent | ffefea0772f1e0e795b81289b4a123af8247807d (diff) | |
| download | bcm5719-llvm-263b0a1669cc37336b4f480db29aad8465632620.tar.gz bcm5719-llvm-263b0a1669cc37336b4f480db29aad8465632620.zip | |
Only cound if we actually made a change.
llvm-svn: 18800
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/IPO/IPConstantPropagation.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/IPO/IPConstantPropagation.cpp b/llvm/lib/Transforms/IPO/IPConstantPropagation.cpp index 99ad8445b15..65d507798b7 100644 --- a/llvm/lib/Transforms/IPO/IPConstantPropagation.cpp +++ b/llvm/lib/Transforms/IPO/IPConstantPropagation.cpp @@ -180,9 +180,12 @@ bool IPCP::PropagateConstantReturn(Function &F) { if (ReplacedAllUsers && F.hasInternalLinkage() && !isa<UndefValue>(RetVal)) { Value *RV = UndefValue::get(RetVal->getType()); for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) - if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) - RI->setOperand(0, RV); - MadeChange = true; + if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) { + if (RI->getOperand(0) != RV) { + RI->setOperand(0, RV); + MadeChange = true; + } + } } if (MadeChange) ++NumReturnValProped; |
