diff options
| 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 | a38f58aa5ce7d05e7f5b35099f4dc28297b3e748 (patch) | |
| tree | 225a59c4d3fcdcd85f7173fa6b9e16dce24ddcb8 /llvm/lib/Transforms | |
| parent | a863ccadeb723377cea48c0eb7741903dd56f8b9 (diff) | |
| download | bcm5719-llvm-a38f58aa5ce7d05e7f5b35099f4dc28297b3e748.tar.gz bcm5719-llvm-a38f58aa5ce7d05e7f5b35099f4dc28297b3e748.zip | |
Add incoming value from header only if phi node has any use inside the loop.
llvm-svn: 48738
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp b/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp index 3aedb93fd17..513cad8a566 100644 --- a/llvm/lib/Transforms/Scalar/LoopIndexSplit.cpp +++ b/llvm/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 |
