diff options
Diffstat (limited to 'llvm/lib/Analysis/ScalarEvolutionExpander.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ScalarEvolutionExpander.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ScalarEvolutionExpander.cpp b/llvm/lib/Analysis/ScalarEvolutionExpander.cpp index 8c5805e9d16..abfcfbafb32 100644 --- a/llvm/lib/Analysis/ScalarEvolutionExpander.cpp +++ b/llvm/lib/Analysis/ScalarEvolutionExpander.cpp @@ -933,6 +933,9 @@ bool SCEVExpander::hoistIVInc(Instruction *IncV, Instruction *InsertPos) { !SE.DT.dominates(InsertPos->getParent(), IncV->getParent())) return false; + if (!SE.LI.movementPreservesLCSSAForm(IncV, InsertPos)) + return false; + // Check that the chain of IV operands leading back to Phi can be hoisted. SmallVector<Instruction*, 4> IVIncs; for(;;) { |
