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| author | Devang Patel <dpatel@apple.com> | 2008-03-24 20:16:14 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2008-03-24 20:16:14 +0000 |
| commit | 60a12907c309fa6e0ae465ffffef1ca3af8d7992 (patch) | |
| tree | c2517b819d9fbc0f32ae5692636c437f6a9f6ef0 /lib/Transforms/Scalar/LoopIndexSplit.cpp | |
| parent | 20b7bda6927a83e7a1e46548ef11daac42928736 (diff) | |
Add incoming value from header only if phi node has any use inside the loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48738 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopIndexSplit.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopIndexSplit.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Scalar/LoopIndexSplit.cpp b/lib/Transforms/Scalar/LoopIndexSplit.cpp index 3aedb93fd1..513cad8a56 100644 --- a/lib/Transforms/Scalar/LoopIndexSplit.cpp +++ b/lib/Transforms/Scalar/LoopIndexSplit.cpp @@ -1665,8 +1665,9 @@ void LoopIndexSplit::updatePHINodes(BasicBlock *ExitBB, BasicBlock *Latch, break; } - assert (NewV && "Unable to find new incoming value for exit block PHI"); - PN->addIncoming(NewV, Header); + // Add incoming value from header only if PN has any use inside the loop. + if (NewV) + PN->addIncoming(NewV, Header); } else if (Instruction *PHI = dyn_cast<Instruction>(V)) { // If this instruction is IVIncrement then IV is new incoming value |