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Fix a crash in SROA. This was reported independently by Takumi and

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David (I think), but I would appreciate folks verifying that this fixes
the big crasher.

I'm still working on a reduced test case, but because this was causing
problems I wanted to get the fix checked in quickly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164585 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2012-09-25 02:42:03 +00:00
parent 24ab21c691
commit 72bf29f45d
1 changed files with 7 additions and 12 deletions
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19
lib/Transforms/Scalar/SROA.cpp
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@ -202,11 +202,11 @@ public:
use_iterator use_begin(const_iterator I) { return Uses[I - begin()].begin(); }
use_iterator use_end(unsigned Idx) { return Uses[Idx].end(); }
use_iterator use_end(const_iterator I) { return Uses[I - begin()].end(); }
void use_insert(unsigned Idx, use_iterator UI, const PartitionUse &U) {
Uses[Idx].insert(UI, U);
void use_push_back(unsigned Idx, const PartitionUse &U) {
Uses[Idx].push_back(U);
}
void use_insert(const_iterator I, use_iterator UI, const PartitionUse &U) {
Uses[I - begin()].insert(UI, U);
void use_push_back(const_iterator I, const PartitionUse &U) {
Uses[I - begin()].push_back(U);
}
void use_erase(unsigned Idx, use_iterator UI) { Uses[Idx].erase(UI); }
void use_erase(const_iterator I, use_iterator UI) {
@ -853,7 +853,7 @@ private:
PartitionUse NewUse(std::max(I->BeginOffset, BeginOffset),
std::min(I->EndOffset, EndOffset),
&User, cast<Instruction>(*U));
P.Uses[I - P.begin()].push_back(NewUse);
P.use_push_back(I, NewUse);
if (isa<PHINode>(U->getUser()) || isa<SelectInst>(U->getUser()))
P.PHIOrSelectOpMap[std::make_pair(&User, U->get())]
= std::make_pair(I - P.begin(), P.Uses[I - P.begin()].size() - 1);
@ -1102,8 +1102,6 @@ AllocaPartitioning::AllocaPartitioning(const TargetData &TD, AllocaInst &AI)
Uses.resize(Partitions.size());
UseBuilder UB(TD, AI, *this);
UB();
for (iterator I = Partitions.begin(), E = Partitions.end(); I != E; ++I)
std::stable_sort(use_begin(I), use_end(I));
}
Type *AllocaPartitioning::getCommonType(iterator I) const {
@ -2460,8 +2458,7 @@ private:
else {
AllocaPartitioning::PartitionUse OtherUse = *UI;
OtherUse.User = Load;
P.use_insert(PI, std::upper_bound(UI, P.use_end(PI), OtherUse),
OtherUse);
P.use_push_back(PI, OtherUse);
}
}
}
@ -2559,7 +2556,7 @@ private:
LoadInst *OtherLoad = IsTrueVal ? FL : TL;
assert(OtherUse.Ptr == OtherLoad->getOperand(0));
OtherUse.User = OtherLoad;
P.use_insert(PI, P.use_end(PI), OtherUse);
P.use_push_back(PI, OtherUse);
}
// Transfer alignment and TBAA info if present.
@ -2576,8 +2573,6 @@ private:
LI->replaceAllUsesWith(V);
Pass.DeadInsts.push_back(LI);
}
if (PI != P.end())
std::stable_sort(P.use_begin(PI), P.use_end(PI));
deleteIfTriviallyDead(OldPtr);
return NewPtr == &NewAI;