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llvm-project/llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
Arthur Eubanks 0d4a709bb8 [Pipeline] Adjust PostOrderFunctionAttrs placement in simplification pipeline 
We can infer more attribute information once functions are fully
simplified, so move the PostOrderFunctionAttrs pass after the function
simplification pipeline. However, just doing this can impact
simplification of recursive functions since function simplification
takes advantage of function attributes of callees (some LLVM tests are
actually impacted by this), so keep a copy of PostOrderFunctionAttrs
before the function simplification pipeline that only runs on recursive
functions.

For example, this fixes the small regression noticed in https://reviews.llvm.org/D128830.

This requires some restructuring of the CGSCC NoRerun feature. We need
to cache the ShouldNotRunFunctionPassesAnalysis analysis after the
simplification is done, which now is after the second
PostOrderFunctionAttrs run, rather than after the function
simplification pipeline.

Compile time impact:
https://llvm-compile-time-tracker.com/compare.php?from=33cf40122279342b50f92a3a53f5c185390b6018&to=1bb2a07875634e508a6bdf2ca1b130f55510f060&stat=instructions:u

Compile time increase from unconditionally running the first PostOrderFunctionAttrs:
https://llvm-compile-time-tracker.com/compare.php?from=1bb2a07875634e508a6bdf2ca1b130f55510f060&to=f4f87e89cc7a35c64e3a103a8036192a84ae002b&stat=instructions:u

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D145210
2023-03-06 09:01:45 -08:00

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; Validate ThinLTO post link pipeline when we have instrumentation PGO
;
; Postlink pipelines:
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<O1>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O123,CHECK-O1,%llvmcheckext
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<O2>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O123,CHECK-O2,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager -passes-ep-pipeline-start='no-op-module' \
; RUN: -passes='thinlto<O3>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O123,CHECK-O3,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<Os>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-OSZ,CHECK-Os,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<Oz>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-OSZ,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-cfg-preserved=0 -eagerly-invalidate-analyses=0 -debug-pass-manager -debug-info-for-profiling \
; RUN: -passes='thinlto<O2>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O123,CHECK-O2,CHECK-O23SZ,%llvmcheckext
; Suppress FileCheck --allow-unused-prefixes=false diagnostics.
; CHECK-NOEXT: {{^}}
; CHECK-O: Running pass: Annotation2Metadata
; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
; CHECK-EP-PIPELINE-START-NEXT: Running pass: NoOpModulePass
; CHECK-O-NEXT: Running pass: PGOIndirectCallPromotion
; CHECK-O-NEXT: Running analysis: ProfileSummaryAnalysis
; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
; CHECK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
; CHECK-O-NEXT: Running pass: CoroEarlyPass
; CHECK-O-NEXT: Running pass: LowerExpectIntrinsicPass
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
; CHECK-O-NEXT: Running pass: SROAPass
; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
; CHECK-O-NEXT: Running pass: EarlyCSEPass
; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
; CHECK-O3-NEXT: Running pass: CallSiteSplittingPass
; CHECK-O-NEXT: Running pass: OpenMPOptPass
; CHECK-O-NEXT: Running pass: LowerTypeTestsPass
; CHECK-O-NEXT: Running pass: IPSCCPPass
; CHECK-O123-NEXT: Running analysis: LoopAnalysis on foo
; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
; CHECK-O-NEXT: Running pass: GlobalOptPass
; CHECK-O-NEXT: Running pass: PromotePass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running analysis: AAManager
; CHECK-O-NEXT: Running analysis: BasicAA
; CHECK-O-NEXT: Running analysis: ScopedNoAliasAA
; CHECK-O-NEXT: Running analysis: TypeBasedAA
; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
; CHECK-O-NEXT: Running analysis: BlockFrequencyAnalysis on foo
; These next two can appear in any order since they are accessed as parameters
; on the same call to BlockFrequencyInfo::calculate.
; CHECK-OSZ-DAG: Running analysis: LoopAnalysis on foo
; CHECK-OSZ-DAG: Running analysis: BranchProbabilityAnalysis on foo
; CHECK-O123-NEXT: Running analysis: BranchProbabilityAnalysis on foo
; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis on foo
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: ModuleInlinerWrapperPass
; CHECK-O-NEXT: Running analysis: InlineAdvisorAnalysis
; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
; CHECK-O-NEXT: Running analysis: GlobalsAA
; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
; CHECK-O-NEXT: Running pass: InvalidateAnalysisPass<{{.*}}AAManager
; CHECK-O-NEXT: Invalidating analysis: AAManager
; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph::SCC{{.*}}>
; CHECK-O-NEXT: Running pass: DevirtSCCRepeatedPass
; CHECK-O-NEXT: Running pass: InlinerPass
; CHECK-O-NEXT: Running pass: InlinerPass
; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
; CHECK-O2-NEXT: Running pass: OpenMPOptCGSCCPass
; CHECK-O3-NEXT: Running pass: OpenMPOptCGSCCPass
; CHECK-O-NEXT: Running pass: SROAPass
; CHECK-O-NEXT: Running pass: EarlyCSEPass
; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
; CHECK-O-NEXT: Running analysis: AAManager
; CHECK-O23SZ-NEXT: Running pass: SpeculativeExecutionPass
; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O3-NEXT: Running pass: AggressiveInstCombinePass
; CHECK-O23SZ-NEXT: Running pass: ConstraintEliminationPass
; CHECK-O1-NEXT: Running pass: LibCallsShrinkWrapPass
; CHECK-O2-NEXT: Running pass: LibCallsShrinkWrapPass
; CHECK-O3-NEXT: Running pass: LibCallsShrinkWrapPass
; CHECK-O23SZ-NEXT: Running pass: TailCallElimPass
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: ReassociatePass
; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
; CHECK-O-NEXT: Running pass: LoopSimplifyPass
; CHECK-O-NEXT: Running pass: LCSSAPass
; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
; CHECK-O-NEXT: Running pass: LoopInstSimplifyPass
; CHECK-O-NEXT: Running pass: LoopSimplifyCFGPass
; CHECK-O-NEXT: Running pass: LICM
; CHECK-O-NEXT: Running pass: LoopRotatePass
; CHECK-O-NEXT: Running pass: LICM
; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running pass: LoopSimplifyPass
; CHECK-O-NEXT: Running pass: LCSSAPass
; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
; CHECK-O-NEXT: Running pass: IndVarSimplifyPass
; CHECK-O-NEXT: Running pass: LoopDeletionPass
; CHECK-O-NEXT: Running pass: LoopFullUnrollPass
; CHECK-O-NEXT: Running pass: SROAPass on foo
; CHECK-O23SZ-NEXT: Running pass: VectorCombinePass
; CHECK-O23SZ-NEXT: Running pass: MergedLoadStoreMotionPass
; CHECK-O23SZ-NEXT: Running pass: GVNPass
; CHECK-O23SZ-NEXT: Running analysis: MemoryDependenceAnalysis
; CHECK-O1-NEXT: Running pass: MemCpyOptPass
; CHECK-O-NEXT: Running pass: SCCPPass
; CHECK-O-NEXT: Running pass: BDCEPass
; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
; CHECK-O1-NEXT: Running pass: CoroElidePass
; CHECK-O-NEXT: Running pass: ADCEPass
; CHECK-O23SZ-NEXT: Running pass: MemCpyOptPass
; CHECK-O23SZ-NEXT: Running pass: DSEPass
; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass
; CHECK-O23SZ-NEXT: Running pass: LCSSAPass
; CHECK-O23SZ-NEXT: Running pass: LICMPass
; CHECK-O23SZ-NEXT: Running pass: CoroElidePass
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ShouldNotRunFunctionPassesAnalysis
; CHECK-O-NEXT: Running analysis: ShouldNotRunFunctionPassesAnalysis
; CHECK-O-NEXT: Running pass: CoroSplitPass
; CHECK-O-NEXT: Running pass: InvalidateAnalysisPass<{{.*}}ShouldNotRunFunctionPassesAnalysis
; CHECK-O-NEXT: Invalidating analysis: ShouldNotRunFunctionPassesAnalysis
; CHECK-O-NEXT: Invalidating analysis: InlineAdvisorAnalysis
; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
; CHECK-O-NEXT: Running pass: CoroCleanupPass
; CHECK-O-NEXT: Running pass: GlobalOptPass
; CHECK-O-NEXT: Running pass: GlobalDCEPass
; CHECK-O-NEXT: Running pass: EliminateAvailableExternallyPass
; CHECK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
; CHECK-O-NEXT: Running pass: RecomputeGlobalsAAPass
; CHECK-O-NEXT: Running pass: Float2IntPass
; CHECK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
; CHECK-O3-NEXT: Running pass: ControlHeightReductionPass
; CHECK-O3-NEXT: Running analysis: RegionInfoAnalysis
; CHECK-O3-NEXT: Running analysis: DominanceFrontierAnalysis
; CHECK-EXT: Running pass: {{.*}}::Bye
; CHECK-O-NEXT: Running pass: LoopSimplifyPass on foo
; CHECK-O-NEXT: Running pass: LCSSAPass on foo
; CHECK-O-NEXT: Running pass: LoopRotatePass
; CHECK-O-NEXT: Running pass: LoopDeletionPass
; CHECK-O-NEXT: Running pass: LoopDistributePass
; CHECK-O-NEXT: Running analysis: LoopAccessAnalysis on foo
; CHECK-O-NEXT: Running pass: InjectTLIMappings
; CHECK-O-NEXT: Running pass: LoopVectorizePass
; CHECK-O-NEXT: Running pass: LoopLoadEliminationPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O2-NEXT: Running pass: SLPVectorizerPass
; CHECK-O3-NEXT: Running pass: SLPVectorizerPass
; CHECK-Os-NEXT: Running pass: SLPVectorizerPass
; CHECK-O-NEXT: Running pass: VectorCombinePass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running pass: LoopUnrollPass
; CHECK-O-NEXT: Running pass: WarnMissedTransformationsPass
; CHECK-O-NEXT: Running pass: SROAPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
; CHECK-O-NEXT: Running pass: LoopSimplifyPass
; CHECK-O-NEXT: Running pass: LCSSAPass
; CHECK-O-NEXT: Running pass: LICMPass
; CHECK-O-NEXT: Running pass: AlignmentFromAssumptionsPass
; CHECK-O-NEXT: Running pass: LoopSinkPass
; CHECK-O-NEXT: Running pass: InstSimplifyPass
; CHECK-O-NEXT: Running pass: DivRemPairsPass
; CHECK-O-NEXT: Running pass: TailCallElimPass
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: GlobalDCEPass
; CHECK-O-NEXT: Running pass: ConstantMergePass
; CHECK-O-NEXT: Running pass: CGProfilePass
; CHECK-O-NEXT: Running pass: RelLookupTableConverterPass
; 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: }
;
; Ignore a bunch of intervening metadata containing profile data.
;
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
}
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"InstrProf"}
!3 = !{!"TotalCount", i64 0}
!4 = !{!"MaxCount", i64 0}
!5 = !{!"MaxInternalCount", i64 0}
!6 = !{!"MaxFunctionCount", i64 0}
!7 = !{!"NumCounts", i64 0}
!8 = !{!"NumFunctions", i64 0}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13, !14, !15, !16, !17, !18, !19, !20, !21, !22, !23, !24, !25, !26}
!11 = !{i32 10000, i64 0, i32 0}
!12 = !{i32 100000, i64 0, i32 0}
!13 = !{i32 200000, i64 0, i32 0}
!14 = !{i32 300000, i64 0, i32 0}
!15 = !{i32 400000, i64 0, i32 0}
!16 = !{i32 500000, i64 0, i32 0}
!17 = !{i32 600000, i64 0, i32 0}
!18 = !{i32 700000, i64 0, i32 0}
!19 = !{i32 800000, i64 0, i32 0}
!20 = !{i32 900000, i64 0, i32 0}
!21 = !{i32 950000, i64 0, i32 0}
!22 = !{i32 990000, i64 0, i32 0}
!23 = !{i32 999000, i64 0, i32 0}
!24 = !{i32 999900, i64 0, i32 0}
!25 = !{i32 999990, i64 0, i32 0}
!26 = !{i32 999999, i64 0, i32 0}
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