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Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to

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use it instead of duplicating its functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51499 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-05-23 21:05:58 +00:00
parent ee335e35ac
commit 02dea8b39f
16 changed files with 38 additions and 62 deletions
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10
lib/Transforms/Scalar/LICM.cpp
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@@ -472,8 +472,7 @@ void LICM::sink(Instruction &I) {
// nodes in it.
I.removeFromParent();
BasicBlock::iterator InsertPt = ExitBlocks[0]->begin();
while (isa<PHINode>(InsertPt)) ++InsertPt;
BasicBlock::iterator InsertPt = ExitBlocks[0]->getFirstNonPHI();
ExitBlocks[0]->getInstList().insert(InsertPt, &I);
}
} else if (ExitBlocks.empty()) {
@@ -542,8 +541,7 @@ void LICM::sink(Instruction &I) {
// If we haven't already processed this exit block, do so now.
if (InsertedBlocks.insert(ExitBlock).second) {
// Insert the code after the last PHI node...
BasicBlock::iterator InsertPt = ExitBlock->begin();
while (isa<PHINode>(InsertPt)) ++InsertPt;
BasicBlock::iterator InsertPt = ExitBlock->getFirstNonPHI();
// If this is the first exit block processed, just move the original
// instruction, otherwise clone the original instruction and insert
@@ -735,9 +733,7 @@ void LICM::PromoteValuesInLoop() {
continue;
// Copy all of the allocas into their memory locations.
BasicBlock::iterator BI = ExitBlocks[i]->begin();
while (isa<PHINode>(*BI))
++BI; // Skip over all of the phi nodes in the block.
BasicBlock::iterator BI = ExitBlocks[i]->getFirstNonPHI();
Instruction *InsertPos = BI;
unsigned PVN = 0;
for (unsigned i = 0, e = PromotedValues.size(); i != e; ++i) {