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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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6
lib/Transforms/Scalar/TailDuplication.cpp
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@@ -118,8 +118,7 @@ bool TailDup::shouldEliminateUnconditionalBranch(TerminatorInst *TI,
++PI;
if (PI == PE) return false; // Exactly one predecessor!
BasicBlock::iterator I = Dest->begin();
while (isa<PHINode>(*I)) ++I;
BasicBlock::iterator I = Dest->getFirstNonPHI();
for (unsigned Size = 0; I != Dest->end(); ++I) {
if (Size == Threshold) return false; // The block is too large.
@@ -254,8 +253,7 @@ void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
// If there are non-phi instructions in DestBlock that have no operands
// defined in DestBlock, and if the instruction has no side effects, we can
// move the instruction to DomBlock instead of duplicating it.
BasicBlock::iterator BBI = DestBlock->begin();
while (isa<PHINode>(BBI)) ++BBI;
BasicBlock::iterator BBI = DestBlock->getFirstNonPHI();
while (!isa<TerminatorInst>(BBI)) {
Instruction *I = BBI++;