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simplify this logic.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-11-27 22:46:09 +00:00
parent d2f0db1b19
commit cb03f8547d
1 changed files with 6 additions and 4 deletions
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10
lib/Transforms/Scalar/DCE.cpp
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@ -39,12 +39,14 @@ namespace {
DeadInstElimination() : BasicBlockPass(intptr_t(&ID)) {} DeadInstElimination() : BasicBlockPass(intptr_t(&ID)) {}
virtual bool runOnBasicBlock(BasicBlock &BB) { virtual bool runOnBasicBlock(BasicBlock &BB) {
bool Changed = false; bool Changed = false;
for (BasicBlock::iterator DI = BB.begin(); DI != BB.end(); ) for (BasicBlock::iterator DI = BB.begin(); DI != BB.end(); ) {
if (dceInstruction(DI)) { Instruction *Inst = DI++;
if (isInstructionTriviallyDead(Inst)) {
Inst->eraseFromParent();
Changed = true; Changed = true;
++DIEEliminated; ++DIEEliminated;
} else }
++DI; }
return Changed; return Changed;
} }