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[MSSA] Remove incorrect comment + `auto`ify dyn_cast results; NFC 

llvm-svn: 335399
This commit is contained in:
George Burgess IV 2018-06-22 22:34:07 +00:00
parent 10e2f73793
commit 2cbf9730b0
1 changed files with 5 additions and 6 deletions
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11
llvm/lib/Analysis/MemorySSA.cpp
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@ -1573,19 +1573,18 @@ void MemorySSA::removeFromLookups(MemoryAccess *MA) {
assert(MA->use_empty() &&
"Trying to remove memory access that still has uses");
BlockNumbering.erase(MA);
if (MemoryUseOrDef *MUD = dyn_cast<MemoryUseOrDef>(MA))
if (auto *MUD = dyn_cast<MemoryUseOrDef>(MA))
MUD->setDefiningAccess(nullptr);
// Invalidate our walker's cache if necessary
if (!isa<MemoryUse>(MA))
Walker->invalidateInfo(MA);
// The call below to erase will destroy MA, so we can't change the order we
// are doing things here
Value *MemoryInst;
if (MemoryUseOrDef *MUD = dyn_cast<MemoryUseOrDef>(MA)) {
if (const auto *MUD = dyn_cast<MemoryUseOrDef>(MA))
MemoryInst = MUD->getMemoryInst();
} else {
else
MemoryInst = MA->getBlock();
}
auto VMA = ValueToMemoryAccess.find(MemoryInst);
if (VMA->second == MA)
ValueToMemoryAccess.erase(VMA);