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| author | Roman Divacky <rdivacky@FreeBSD.org> | 2009-11-04 14:58:56 +0000 |
|---|---|---|
| committer | Roman Divacky <rdivacky@FreeBSD.org> | 2009-11-04 14:58:56 +0000 |
| commit | 36bf506ad3c99a309ca8bd73bd03563d8d068ac0 (patch) | |
| tree | b4dc751bcee540346911aa4115729eff2f991657 /lib/Transforms/Scalar/SimplifyCFGPass.cpp | |
| parent | f9666f9b3a3d26810deae8cd54feb6e47ecee61a (diff) | |
Notes
Diffstat (limited to 'lib/Transforms/Scalar/SimplifyCFGPass.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/SimplifyCFGPass.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/SimplifyCFGPass.cpp b/lib/Transforms/Scalar/SimplifyCFGPass.cpp index 29712b3c13de..6a8148040d94 100644 --- a/lib/Transforms/Scalar/SimplifyCFGPass.cpp +++ b/lib/Transforms/Scalar/SimplifyCFGPass.cpp @@ -126,6 +126,9 @@ static bool MarkAliveBlocks(BasicBlock *BB, } } + // Store to undef and store to null are undefined and used to signal that + // they should be changed to unreachable by passes that can't modify the + // CFG. if (StoreInst *SI = dyn_cast<StoreInst>(BBI)) { Value *Ptr = SI->getOperand(1); |