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Do not loop over uses as we delete them. This causes iterators to be

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invalidated out from under us.  This bug goes back to revision 1.1: scary.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14242 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-06-19 02:02:22 +00:00
parent 190196047a
commit 8430a4545c
1 changed files with 2 additions and 3 deletions
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5
lib/Transforms/Scalar/ScalarReplAggregates.cpp
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@ -171,9 +171,8 @@ bool SROA::performScalarRepl(Function &F) {
// Now that we have created the alloca instructions that we want to use,
// expand the getelementptr instructions to use them.
//
for (Value::use_iterator I = AI->use_begin(), E = AI->use_end();
I != E; ++I) {
Instruction *User = cast<Instruction>(*I);
while (!AI->use_empty()) {
Instruction *User = cast<Instruction>(AI->use_back());
if (GetElementPtrInst *GEPI = dyn_cast<GetElementPtrInst>(User)) {
// We now know that the GEP is of the form: GEP <ptr>, 0, <cst>
uint64_t Idx = cast<ConstantInt>(GEPI->getOperand(2))->getRawValue();