mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-03-20 11:32:33 +00:00
Only try to clean up the current block if we changed that block already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112625 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
c1dc78de76
commit
869a144f4e
@ -100,19 +100,25 @@ bool CorrelatedValuePropagation::processPHI(PHINode *P) {
|
||||
bool CorrelatedValuePropagation::runOnFunction(Function &F) {
|
||||
LVI = &getAnalysis<LazyValueInfo>();
|
||||
|
||||
bool Changed = false;
|
||||
bool FnChanged = false;
|
||||
|
||||
for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI) {
|
||||
bool BBChanged = false;
|
||||
for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE; ) {
|
||||
Instruction *II = BI++;
|
||||
if (SelectInst *SI = dyn_cast<SelectInst>(II))
|
||||
Changed |= processSelect(SI);
|
||||
BBChanged |= processSelect(SI);
|
||||
else if (PHINode *P = dyn_cast<PHINode>(II))
|
||||
Changed |= processPHI(P);
|
||||
BBChanged |= processPHI(P);
|
||||
}
|
||||
|
||||
SimplifyInstructionsInBlock(FI);
|
||||
// Propagating correlated values might leave cruft around.
|
||||
// Try to clean it up before we continue.
|
||||
if (BBChanged)
|
||||
SimplifyInstructionsInBlock(FI);
|
||||
|
||||
FnChanged |= BBChanged;
|
||||
}
|
||||
|
||||
return Changed;
|
||||
return FnChanged;
|
||||
}
|
||||
|
Loading…
x
Reference in New Issue
Block a user