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llvm-project/llvm/test/Other/new-pm-lto-defaults.ll
Anton Afanasyev c34d157fc7 [Passes] Move AggressiveInstCombine after InstCombine 
Swap AIC and IC neighbouring in pipeline. This looks more natural and even
almost has no effect for now (three slightly touched tests of test-suite). Also
this could be the first step towards merging AIC (or its part) to -O2 pipeline.

After several changes in AIC (like D108091, D108201, D107766, D109515, D109236)
there've been observed several regressions (like PR52078, PR52253, PR52289)
that were fixed in different passes (see D111330, D112721) by extending their
functionality, but these regressions were exposed since changed AIC prevents IC
from making some of early optimizations.

This is common problem and it should be fixed by just moving AIC after IC
which looks more logically by itself: make aggressive instruction combining
only after failed ordinary one.

Fixes PR52289

Reviewed By: spatel, RKSimon

Differential Revision: https://reviews.llvm.org/D113179
2021-12-04 14:22:43 +03:00

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; Basic test for the new LTO pipeline.
; For now the only difference is between -O1 and everything else, so
; -O2, -O3, -Os, -Oz are the same.
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<O1>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O1
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<O2>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O23SZ \
; RUN: --check-prefix=CHECK-O2
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<O3>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O23SZ \
; RUN: --check-prefix=CHECK-O3
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<Os>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O23SZ \
; RUN: --check-prefix=CHECK-OS
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<Oz>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O23SZ
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='lto<O3>' -S %s -passes-ep-peephole='no-op-function' 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O23SZ \
; RUN: --check-prefix=CHECK-O3 --check-prefix=CHECK-EP-Peephole
; CHECK-O: Running pass: Annotation2Metadata
; CHECK-O-NEXT: Running pass: CrossDSOCFIPass
; CHECK-O-NEXT: Running pass: GlobalDCEPass
; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}Module
; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
; CHECK-O23SZ-NEXT: Running pass: CallSiteSplittingPass on foo
; CHECK-O23SZ-NEXT: Running analysis: TargetLibraryAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: TargetIRAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: DominatorTreeAnalysis on foo
; CHECK-O23SZ-NEXT: PGOIndirectCallPromotion
; CHECK-O23SZ-NEXT: Running analysis: ProfileSummaryAnalysis
; CHECK-O23SZ-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
; CHECK-O23SZ-NEXT: Running pass: IPSCCPPass
; CHECK-O23SZ-NEXT: Running analysis: AssumptionAnalysis on foo
; CHECK-O23SZ-NEXT: Running pass: CalledValuePropagationPass
; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}SCC
; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
; CHECK-O1-NEXT: Running analysis: TargetLibraryAnalysis
; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph{{.*}}>
; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
; CHECK-O-NEXT: Running analysis: AAManager
; CHECK-O-NEXT: Running analysis: BasicAA
; CHECK-O1-NEXT: Running analysis: AssumptionAnalysis on foo
; CHECK-O1-NEXT: Running analysis: TargetIRAnalysis
; CHECK-O1-NEXT: Running analysis: DominatorTreeAnalysis
; CHECK-O-NEXT: Running analysis: ScopedNoAliasAA
; CHECK-O-NEXT: Running analysis: TypeBasedAA
; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
; CHECK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
; CHECK-O-NEXT: Running pass: GlobalSplitPass
; CHECK-O-NEXT: Running pass: WholeProgramDevirtPass
; CHECK-O1-NEXT: Running pass: LowerTypeTestsPass
; CHECK-O23SZ-NEXT: Running pass: GlobalOptPass
; CHECK-O23SZ-NEXT: Running pass: PromotePass
; CHECK-O23SZ-NEXT: Running pass: ConstantMergePass
; CHECK-O23SZ-NEXT: Running pass: DeadArgumentEliminationPass
; CHECK-O23SZ-NEXT: Running pass: InstCombinePass
; CHECK-O3-NEXT: Running pass: AggressiveInstCombinePass
; CHECK-EP-Peephole-NEXT: Running pass: NoOpFunctionPass
; CHECK-O23SZ-NEXT: Running pass: ModuleInlinerWrapperPass
; CHECK-O23SZ-NEXT: Running analysis: InlineAdvisorAnalysis
; CHECK-O23SZ-NEXT: Running pass: InlinerPass
; CHECK-O23SZ-NEXT: Running pass: InlinerPass
; CHECK-O23SZ-NEXT: Invalidating analysis: InlineAdvisorAnalysis
; CHECK-O23SZ-NEXT: Running pass: GlobalOptPass
; CHECK-O23SZ-NEXT: Running pass: GlobalDCEPass
; CHECK-O23SZ-NEXT: Running pass: ArgumentPromotionPass
; CHECK-O23SZ-NEXT: Running pass: InstCombinePass
; CHECK-EP-Peephole-NEXT: Running pass: NoOpFunctionPass
; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
; CHECK-O23SZ-NEXT: Running pass: SROAPass on foo
; CHECK-O23SZ-NEXT: Running pass: TailCallElimPass on foo
; CHECK-O23SZ-NEXT: Running pass: PostOrderFunctionAttrsPass on (foo)
; CHECK-O23SZ-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
; CHECK-O23SZ-NEXT: Running analysis: GlobalsAA on [module]
; CHECK-O23SZ-NEXT: Running pass: InvalidateAnalysisPass<{{.*}}AAManager
; CHECK-O23SZ-NEXT: Invalidating analysis: AAManager on foo
; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass on foo
; CHECK-O23SZ-NEXT: Running analysis: LoopAnalysis on foo
; CHECK-O23SZ-NEXT: Running pass: LCSSAPass on foo
; CHECK-O23SZ-NEXT: Running analysis: MemorySSAAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: AAManager on foo
; CHECK-O23SZ-NEXT: Running analysis: ScalarEvolutionAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: InnerAnalysisManagerProxy
; CHECK-O23SZ-NEXT: Running pass: LICMPass on Loop
; CHECK-O23SZ-NEXT: Running pass: GVNPass on foo
; CHECK-O23SZ-NEXT: Running analysis: MemoryDependenceAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: PhiValuesAnalysis on foo
; CHECK-O23SZ-NEXT: Running pass: MemCpyOptPass on foo
; CHECK-O23SZ-NEXT: Running pass: DSEPass on foo
; CHECK-O23SZ-NEXT: Running analysis: PostDominatorTreeAnalysis on foo
; CHECK-O23SZ-NEXT: Running pass: MergedLoadStoreMotionPass on foo
; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass on foo
; CHECK-O23SZ-NEXT: Running pass: LCSSAPass on foo
; CHECK-O23SZ-NEXT: Running pass: IndVarSimplifyPass on Loop
; CHECK-O23SZ-NEXT: Running pass: LoopDeletionPass on Loop
; CHECK-O23SZ-NEXT: Running pass: LoopFullUnrollPass on Loop
; CHECK-O23SZ-NEXT: Running pass: LoopDistributePass on foo
; CHECK-O23SZ-NEXT: Running pass: LoopVectorizePass on foo
; CHECK-O23SZ-NEXT: Running analysis: BlockFrequencyAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: BranchProbabilityAnalysis on foo
; CHECK-O23SZ-NEXT: Running analysis: DemandedBitsAnalysis on foo
; CHECK-O23SZ-NEXT: Running pass: LoopUnrollPass on foo
; CHECK-O23SZ-NEXT: WarnMissedTransformationsPass on foo
; CHECK-O23SZ-NEXT: Running pass: InstCombinePass on foo
; CHECK-O23SZ-NEXT: Running pass: SimplifyCFGPass on foo
; CHECK-O23SZ-NEXT: Running pass: SCCPPass on foo
; CHECK-O23SZ-NEXT: Running pass: InstCombinePass on foo
; CHECK-O23SZ-NEXT: Running pass: BDCEPass on foo
; CHECK-O2-NEXT: Running pass: SLPVectorizerPass on foo
; CHECK-O3-NEXT: Running pass: SLPVectorizerPass on foo
; CHECK-OS-NEXT: Running pass: SLPVectorizerPass on foo
; CHECK-O23SZ-NEXT: Running pass: VectorCombinePass on foo
; CHECK-O23SZ-NEXT: Running pass: AlignmentFromAssumptionsPass on foo
; CHECK-O23SZ-NEXT: Running pass: InstCombinePass on foo
; CHECK-EP-Peephole-NEXT: Running pass: NoOpFunctionPass on foo
; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass on foo
; CHECK-O23SZ-NEXT: Running pass: LowerTypeTestsPass
; CHECK-O-NEXT: Running pass: LowerTypeTestsPass
; CHECK-O23SZ-NEXT: Running pass: SimplifyCFGPass
; CHECK-O23SZ-NEXT: Running pass: EliminateAvailableExternallyPass
; CHECK-O23SZ-NEXT: Running pass: GlobalDCEPass
; CHECK-O-NEXT: Running pass: AnnotationRemarksPass on foo
; CHECK-O-NEXT: Running pass: PrintModulePass
; Make sure we get the IR back out without changes when we print the module.
; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
; CHECK-O-NEXT: entry:
; CHECK-O-NEXT: br label %loop
; CHECK-O: loop:
; CHECK-O-NEXT: %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
; CHECK-O-NEXT: %iv.next = add i32 %iv, 1
; CHECK-O-NEXT: tail call void @bar()
; CHECK-O-NEXT: %cmp = icmp eq i32 %iv, %n
; CHECK-O-NEXT: br i1 %cmp, label %exit, label %loop
; CHECK-O: exit:
; CHECK-O-NEXT: ret void
; CHECK-O-NEXT: }
;
declare void @bar() local_unnamed_addr
define void @foo(i32 %n) local_unnamed_addr {
entry:
br label %loop
loop:
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
%iv.next = add i32 %iv, 1
tail call void @bar()
%cmp = icmp eq i32 %iv, %n
br i1 %cmp, label %exit, label %loop
exit:
ret void
}
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