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Before deleting a basic block, give other loop passes a chance cleanup analysis values, related to the instructions in the basic block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67719 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -152,6 +152,13 @@ void LPPassManager::cloneBasicBlockSimpleAnalysis(BasicBlock *From,
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/// deleteSimpleAnalysisValue - Invoke deleteAnalysisValue hook for all passes.
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/// deleteSimpleAnalysisValue - Invoke deleteAnalysisValue hook for all passes.
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void LPPassManager::deleteSimpleAnalysisValue(Value *V, Loop *L) {
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void LPPassManager::deleteSimpleAnalysisValue(Value *V, Loop *L) {
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if (BasicBlock *BB = dyn_cast<BasicBlock>(V)) {
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for (BasicBlock::iterator BI = BB->begin(), BE = BB->end(); BI != BE;
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++BI) {
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Instruction &I = *BI;
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deleteSimpleAnalysisValue(&I, L);
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}
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}
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for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
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for (unsigned Index = 0; Index < getNumContainedPasses(); ++Index) {
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Pass *P = getContainedPass(Index);
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Pass *P = getContainedPass(Index);
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LoopPass *LP = dynamic_cast<LoopPass *>(P);
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LoopPass *LP = dynamic_cast<LoopPass *>(P);
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@ -673,6 +673,7 @@ void LoopIndexSplit::removeBlocks(BasicBlock *DeadBB, Loop *LP,
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while (!WorkList.empty()) {
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while (!WorkList.empty()) {
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BasicBlock *BB = WorkList.back(); WorkList.pop_back();
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BasicBlock *BB = WorkList.back(); WorkList.pop_back();
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LPM->deleteSimpleAnalysisValue(BB, LP);
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for(BasicBlock::iterator BBI = BB->begin(), BBE = BB->end();
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for(BasicBlock::iterator BBI = BB->begin(), BBE = BB->end();
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BBI != BBE; ) {
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BBI != BBE; ) {
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Instruction *I = BBI;
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Instruction *I = BBI;
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@ -680,7 +681,6 @@ void LoopIndexSplit::removeBlocks(BasicBlock *DeadBB, Loop *LP,
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I->replaceAllUsesWith(UndefValue::get(I->getType()));
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I->replaceAllUsesWith(UndefValue::get(I->getType()));
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I->eraseFromParent();
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I->eraseFromParent();
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}
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}
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LPM->deleteSimpleAnalysisValue(BB, LP);
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DT->eraseNode(BB);
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DT->eraseNode(BB);
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DF->removeBlock(BB);
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DF->removeBlock(BB);
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LI->removeBlock(BB);
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LI->removeBlock(BB);
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39
test/Transforms/LICM/2009-03-25-AliasSetTracker.ll
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39
test/Transforms/LICM/2009-03-25-AliasSetTracker.ll
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@ -0,0 +1,39 @@
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; RUN: llvm-as < %s | opt -licm -loop-index-split -instcombine -disable-output
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%struct.FILE = type { i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct.FILE*, i32, i32, i32, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i32, i32, [40 x i8] }
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%struct._IO_marker = type { %struct._IO_marker*, %struct.FILE*, i32 }
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@"\01LC81" = external constant [4 x i8] ; <[4 x i8]*> [#uses=1]
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define fastcc void @hex_dump_internal(i8* %avcl, %struct.FILE* %f, i32 %level, i8* nocapture %buf, i32 %size) nounwind {
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entry:
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br i1 false, label %bb4, label %return
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bb4: ; preds = %bb30, %entry
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br label %bb6
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bb6: ; preds = %bb15, %bb4
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%j.0.reg2mem.0 = phi i32 [ %2, %bb15 ], [ 0, %bb4 ] ; <i32> [#uses=2]
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%0 = icmp slt i32 %j.0.reg2mem.0, 0 ; <i1> [#uses=1]
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br i1 %0, label %bb7, label %bb13
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bb7: ; preds = %bb6
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br label %bb15
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bb13: ; preds = %bb6
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%1 = tail call i32 @fwrite(i8* getelementptr ([4 x i8]* @"\01LC81", i32 0, i32 0), i32 1, i32 3, i8* null) nounwind ; <i32> [#uses=0]
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br label %bb15
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bb15: ; preds = %bb13, %bb7
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%2 = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2]
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%3 = icmp sgt i32 %2, 15 ; <i1> [#uses=1]
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br i1 %3, label %bb30, label %bb6
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bb30: ; preds = %bb15
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br i1 false, label %bb4, label %return
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return: ; preds = %bb30, %entry
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ret void
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}
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declare i32 @fwrite(i8* nocapture, i32, i32, i8* nocapture) nounwind
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