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don't revisit instructions off the beginning of the block.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60221 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-11-28 22:50:08 +00:00
parent 956033a4f5
commit 5425f22fa3
1 changed files with 4 additions and 2 deletions
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6
lib/Transforms/Scalar/DeadStoreElimination.cpp
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@ -132,7 +132,8 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) {
// If we deleted a store, reinvestigate this instruction.
if (deletedStore) {
--BBI;
if (!isa<TerminatorInst>(BB.begin()))
--BBI;
continue;
}
}
@ -160,7 +161,8 @@ bool DSE::runOnBasicBlock(BasicBlock &BB) {
DT.dominates(dep, L))) {
DeleteDeadInstruction(S);
--BBI;
if (!isa<TerminatorInst>(BB.begin()))
--BBI;
NumFastStores++;
MadeChange = true;
} else