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use getUniqueExitBlocks instead of a manual set.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112412 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-08-29 05:12:21 +00:00
parent 5033f64694
commit 63a75c13b1
1 changed files with 2 additions and 10 deletions
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12
lib/Transforms/Scalar/LICM.cpp
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@@ -707,18 +707,10 @@ void LICM::PromoteValuesInLoop() {
// Now that the body of the loop uses the allocas instead of the original // Now that the body of the loop uses the allocas instead of the original
// memory locations, insert code to copy the alloca value back into the // memory locations, insert code to copy the alloca value back into the
// original memory location on all exits from the loop. Note that we only // original memory location on all exits from the loop.
// want to insert one copy of the code in each exit block, though the loop may
// exit to the same block more than once.
//
SmallPtrSet<BasicBlock*, 16> ProcessedBlocks;
SmallVector<BasicBlock*, 8> ExitBlocks; SmallVector<BasicBlock*, 8> ExitBlocks;
CurLoop->getExitBlocks(ExitBlocks); CurLoop->getUniqueExitBlocks(ExitBlocks);
for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i) { for (unsigned i = 0, e = ExitBlocks.size(); i != e; ++i) {
if (!ProcessedBlocks.insert(ExitBlocks[i]))
continue;
// Copy all of the allocas into their memory locations. // Copy all of the allocas into their memory locations.
BasicBlock::iterator BI = ExitBlocks[i]->getFirstNonPHI(); BasicBlock::iterator BI = ExitBlocks[i]->getFirstNonPHI();
Instruction *InsertPos = BI; Instruction *InsertPos = BI;