diff options
Diffstat (limited to 'lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index 742efe6184..2bf9ae89f9 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -805,7 +805,7 @@ static bool FoldValueComparisonIntoPredecessors(TerminatorInst *TI) { return Changed; } -/// HoistThenElseCodeToIf - Given a conditional branch that codes to BB1 and +/// HoistThenElseCodeToIf - Given a conditional branch that goes to BB1 and /// BB2, hoist any common code in the two blocks up into the branch block. The /// caller of this function guarantees that BI's block dominates BB1 and BB2. static bool HoistThenElseCodeToIf(BranchInst *BI) { @@ -818,7 +818,8 @@ static bool HoistThenElseCodeToIf(BranchInst *BI) { BasicBlock *BB2 = BI->getSuccessor(1); // The false destination Instruction *I1 = BB1->begin(), *I2 = BB2->begin(); - if (I1->getOpcode() != I2->getOpcode() || !I1->isIdenticalTo(I2)) + if (I1->getOpcode() != I2->getOpcode() || !I1->isIdenticalTo(I2) || + isa<PHINode>(I1)) return false; // If we get here, we can hoist at least one instruction. |