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author | Devang Patel <dpatel@apple.com> | 2006-11-01 23:04:45 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2006-11-01 23:04:45 +0000 |
commit | e0805a2d36ac1c27b6e1bb2eb3ccddfd14b2f908 (patch) | |
tree | 7c1606186bbf7f362e92e678b480c7ab192f1fb4 /lib/Transforms | |
parent | 4c2b7a380830d783e7df4c2c3418b8921ed0684f (diff) | |
download | external_llvm-e0805a2d36ac1c27b6e1bb2eb3ccddfd14b2f908.zip external_llvm-e0805a2d36ac1c27b6e1bb2eb3ccddfd14b2f908.tar.gz external_llvm-e0805a2d36ac1c27b6e1bb2eb3ccddfd14b2f908.tar.bz2 |
There can be more than one PHINode at the start of the block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31362 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
-rw-r--r-- | lib/Transforms/Scalar/CondPropagate.cpp | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/CondPropagate.cpp b/lib/Transforms/Scalar/CondPropagate.cpp index d7aa7ec..703105f 100644 --- a/lib/Transforms/Scalar/CondPropagate.cpp +++ b/lib/Transforms/Scalar/CondPropagate.cpp @@ -196,11 +196,10 @@ void CondProp::RevectorBlockTo(BasicBlock *FromBB, BasicBlock *ToBB) { // Get the old block we are threading through. BasicBlock *OldSucc = FromBr->getSuccessor(0); - // OldSucc had multiple successors. If ToBB has multiple predecessors, the - // edge between them would be critical, which we already took care of. - // If ToBB has single operand PHI node than take care of it here. - if (isa<PHINode>(ToBB->begin())) { - PHINode *PN = cast<PHINode>(ToBB->begin()); + // OldSucc had multiple successors. If ToBB has multiple predecessors, then + // the edge between them would be critical, which we already took care of. + // If ToBB has single operand PHI node then take care of it here. + while (PHINode *PN = dyn_cast<PHINode>(ToBB->begin())) { assert(PN->getNumIncomingValues() == 1 && "Critical Edge Found!"); PN->replaceAllUsesWith(PN->getIncomingValue(0)); PN->eraseFromParent(); |