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Differential D69303 Diff 226038 llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

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llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

Show First 20 Lines • Show All 1,248 Lines • ▼ Show 20 Lines while (InstDep.isDef() || InstDep.isClobber()) {
APInt Merged = APInt Merged =
(EarlierValue & ~Mask) | (LaterValue << LShiftAmount); (EarlierValue & ~Mask) | (LaterValue << LShiftAmount);
LLVM_DEBUG(dbgs() << "DSE: Merge Stores:\n Earlier: " << *DepWrite LLVM_DEBUG(dbgs() << "DSE: Merge Stores:\n Earlier: " << *DepWrite
<< "\n Later: " << *Inst << "\n Later: " << *Inst
<< "\n Merged Value: " << Merged << '\n'); << "\n Merged Value: " << Merged << '\n');
auto *SI = new StoreInst( auto *SI = new StoreInst(
ConstantInt::get(Earlier->getValueOperand()->getType(), Merged), ConstantInt::get(Earlier->getValueOperand()->getType(), Merged),
Earlier->getPointerOperand(), false, Earlier->getAlignment(), Earlier->getPointerOperand(), false,
Earlier->getOrdering(), Earlier->getSyncScopeID(), DepWrite); MaybeAlign(Earlier->getAlignment()), Earlier->getOrdering(),
Earlier->getSyncScopeID(), DepWrite);
unsigned MDToKeep[] = {LLVMContext::MD_dbg, LLVMContext::MD_tbaa, unsigned MDToKeep[] = {LLVMContext::MD_dbg, LLVMContext::MD_tbaa,
LLVMContext::MD_alias_scope, LLVMContext::MD_alias_scope,
LLVMContext::MD_noalias, LLVMContext::MD_noalias,
LLVMContext::MD_nontemporal}; LLVMContext::MD_nontemporal};
SI->copyMetadata(*DepWrite, MDToKeep); SI->copyMetadata(*DepWrite, MDToKeep);
++NumModifiedStores; ++NumModifiedStores;
▲ Show 20 Lines • Show All 131 Lines • Show Last 20 Lines