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d7cc3d1b4a
a lazy-asserting PoisoningVH. AssertVH is fundamentally incompatible with cache-invalidation of analysis results. The invaliadtion happens after the AssertingVH has already fired. Instead, use a PoisoningVH that will assert if the dangling handle is ever used rather than merely be assigned or destroyed. This patch also removes all of the (numerous) doomed attempts to work around this fundamental incompatibility. It is a pretty significant simplification IMO. The most interesting change is in the Inliner where we still do some clearing because we don't want to rely on the coarse grained invalidation strategy of the containing pass manager. However, I prefer the approach that contains this logic to the cleanup phase of the Inliner, and I think we could enhance the CGSCC analysis management layer to make this even better in the future if desired. The rest is straight cleanup. I've also added a test for one of the harder cases to work around: when a *module analysis* contains many AssertingVHes pointing at functions. Differential Revision: https://reviews.llvm.org/D29006 llvm-svn: 292928
102 lines
4.7 KiB
LLVM
102 lines
4.7 KiB
LLVM
; Basic test for the new LTO pipeline.
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; For now the only difference is between -O1 and everything else, so
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; -O2, -O3, -Os, -Oz are the same.
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<O1>' -S %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<O2>' -S %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O2
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<O3>' -S %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O2
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<Os>' -S %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O2
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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<Oz>' -S %s 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O2
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; CHECK-O: Starting llvm::Module pass manager run.
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; CHECK-O-NEXT: Running pass: PassManager<{{.*}}Module
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; CHECK-O-NEXT: Starting llvm::Module pass manager run.
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; CHECK-O-NEXT: Running pass: GlobalDCEPass
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; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
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; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
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; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
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; CHECK-O2-NEXT: PGOIndirectCallPromotion
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; CHECK-O2-NEXT: Running pass: IPSCCPPass
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; CHECK-O-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}PostOrderFunctionAttrsPass>
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; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
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; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
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; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
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; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
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; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph{{.*}}>
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; CHECK-O-NEXT: Running analysis: AAManager
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; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
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; CHECK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
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; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
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; CHECK-O-NEXT: Running pass: GlobalSplitPass
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; CHECK-O-NEXT: Running pass: WholeProgramDevirtPass
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; CHECK-O2-NEXT: Running pass: GlobalOptPass
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; CHECK-O2-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PromotePass>
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; CHECK-O2-NEXT: Running analysis: DominatorTreeAnalysis
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; CHECK-O2-NEXT: Running analysis: AssumptionAnalysis
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; CHECK-O2-NEXT: Running pass: ConstantMergePass
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; CHECK-O2-NEXT: Running pass: DeadArgumentEliminationPass
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; CHECK-O2-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}InstCombinePass>
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; CHECK-O2-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}InlinerPass>
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; CHECK-O2-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
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; CHECK-O2-NEXT: Running pass: GlobalOptPass
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; CHECK-O2-NEXT: Running pass: GlobalDCEPass
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; CHECK-O2-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
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; CHECK-O2-NEXT: Starting llvm::Function pass manager run.
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; CHECK-O2-NEXT: Running pass: InstCombinePass
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; CHECK-O2-NEXT: Running pass: JumpThreadingPass
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; CHECK-O2-NEXT: Running analysis: LazyValueAnalysis
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; CHECK-O2-NEXT: Running pass: SROA on foo
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; CHECK-O2-NEXT: Finished llvm::Function pass manager run.
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; CHECK-O2-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}PostOrderFunctionAttrsPass>
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; CHECK-O2-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
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; CHECK-O2-NEXT: Running analysis: MemoryDependenceAnalysis
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; CHECK-O2-NEXT: Running analysis: TargetIRAnalysis
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; CHECK-O2-NEXT: Running analysis: DemandedBitsAnalysis
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; CHECK-O2-NEXT: Running pass: CrossDSOCFIPass
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; CHECK-O2-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}SimplifyCFGPass>
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; CHECK-O2-NEXT: Running pass: EliminateAvailableExternallyPass
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; CHECK-O2-NEXT: Running pass: GlobalDCEPass
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; CHECK-O-NEXT: Finished llvm::Module pass manager run.
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; CHECK-O-NEXT: Running pass: PrintModulePass
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; Make sure we get the IR back out without changes when we print the module.
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; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
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; CHECK-O-NEXT: entry:
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; CHECK-O-NEXT: br label %loop
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; CHECK-O: loop:
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; CHECK-O-NEXT: %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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; CHECK-O-NEXT: %iv.next = add i32 %iv, 1
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; CHECK-O-NEXT: tail call void @bar()
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; CHECK-O-NEXT: %cmp = icmp eq i32 %iv, %n
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; CHECK-O-NEXT: br i1 %cmp, label %exit, label %loop
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; CHECK-O: exit:
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; CHECK-O-NEXT: ret void
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; CHECK-O-NEXT: }
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;
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; CHECK-O-NEXT: Finished llvm::Module pass manager run.
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declare void @bar() local_unnamed_addr
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define void @foo(i32 %n) local_unnamed_addr {
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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%iv.next = add i32 %iv, 1
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tail call void @bar()
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%cmp = icmp eq i32 %iv, %n
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br i1 %cmp, label %exit, label %loop
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exit:
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ret void
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}
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