diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/Reassociate.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/Reassociate.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/Scalar/Reassociate.cpp b/llvm/lib/Transforms/Scalar/Reassociate.cpp index 5df6f3725a3..e093b52571a 100644 --- a/llvm/lib/Transforms/Scalar/Reassociate.cpp +++ b/llvm/lib/Transforms/Scalar/Reassociate.cpp @@ -348,9 +348,10 @@ void Reassociate::RewriteExprTree(BinaryOperator *I, I->setOperand(0, Ops[i].Op); I->setOperand(1, Ops[i+1].Op); - // Conservatively clear all the optional flags, which may not hold - // after the reassociation. - I->clearSubclassOptionalData(); + // Clear all the optional flags, which may not hold after the + // reassociation if the expression involved more than just this operation. + if (Ops.size() != 2) + I->clearSubclassOptionalData(); DEBUG(dbgs() << "TO: " << *I << '\n'); MadeChange = true; |
