diff options
Diffstat (limited to 'lib/Transforms/Scalar/GVN.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index eb6b901e92..164730c3ca 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -1633,8 +1633,13 @@ bool GVN::processNonLocalLoad(LoadInst *LI, LoadPtr = Address.PHITranslateWithInsertion(LoadBB, UnavailablePred, *DT, NewInsts); } else { - Address.PHITranslateValue(LoadBB, UnavailablePred, DT); + Address.PHITranslateValue(LoadBB, UnavailablePred); LoadPtr = Address.getAddr(); + + // Make sure the value is live in the predecessor. + if (Instruction *Inst = dyn_cast_or_null<Instruction>(LoadPtr)) + if (!DT->dominates(Inst->getParent(), UnavailablePred)) + LoadPtr = 0; } // If we couldn't find or insert a computation of this phi translated value, |