diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/LazyValueInfo.cpp | 9 | ||||
| -rw-r--r-- | llvm/lib/Transforms/Scalar/JumpThreading.cpp | 2 |
2 files changed, 11 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp index 33651783cb17..2ba6036056d9 100644 --- a/llvm/lib/Analysis/LazyValueInfo.cpp +++ b/llvm/lib/Analysis/LazyValueInfo.cpp @@ -465,6 +465,10 @@ public: F.print(OS, &Writer); } + /// This is part of the update interface to remove information related to this + /// value from the cache. + void forgetValue(Value *V) { TheCache.eraseValue(V); } + /// This is part of the update interface to inform the cache /// that a block has been deleted. void eraseBlock(BasicBlock *BB) { @@ -1969,6 +1973,11 @@ void LazyValueInfo::threadEdge(BasicBlock *PredBB, BasicBlock *OldSucc, } } +void LazyValueInfo::forgetValue(Value *V) { + if (PImpl) + getImpl(PImpl, AC, nullptr).forgetValue(V); +} + void LazyValueInfo::eraseBlock(BasicBlock *BB) { if (PImpl) { getImpl(PImpl, AC, BB->getModule()).eraseBlock(BB); diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp index 24390f1b54f6..5b8f1b00dc03 100644 --- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp +++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp @@ -1269,6 +1269,7 @@ bool JumpThreadingPass::simplifyPartiallyRedundantLoad(LoadInst *LoadI) { if (IsLoadCSE) { LoadInst *NLoadI = cast<LoadInst>(AvailableVal); combineMetadataForCSE(NLoadI, LoadI, false); + LVI->forgetValue(NLoadI); }; // If the returned value is the load itself, replace with poison. This can @@ -1461,6 +1462,7 @@ bool JumpThreadingPass::simplifyPartiallyRedundantLoad(LoadInst *LoadI) { for (LoadInst *PredLoadI : CSELoads) { combineMetadataForCSE(PredLoadI, LoadI, true); + LVI->forgetValue(PredLoadI); } LoadI->replaceAllUsesWith(PN); |