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clang-p2996/llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
Yuxuan Chen a416267a5f [LLVM][Coroutines] Transform "coro_elide_safe" calls to switch ABI coroutines to the noalloc variant (#99285) 
This patch is episode three of the middle end implementation for the
coroutine HALO improvement project published on discourse:
https://discourse.llvm.org/t/language-extension-for-better-more-deterministic-halo-for-c-coroutines/80044

After we attribute the calls to some coroutines as "coro_elide_safe" in
the C++ FE and creating a `noalloc` ramp function, we use a new middle
end pass to move the call to coroutines to the noalloc variant.

This pass should be run after CoroSplit. For each node we process in
CoroSplit, we look for its callers and replace the attributed ones in
presplit coroutines to the noalloc one. The transformed `noalloc` ramp
function will also require a frame pointer to a block of memory it can
use as an activation frame. We allocate this on the caller's frame with
an alloca.

Please note that we cannot safely transform such attributed calls in
post-split coroutines due to memory lifetime reasons. The CoroSplit pass
is responsible for creating the coroutine frame spills for all the
allocas in the coroutine. Therefore it will be unsafe to create new
allocas like this one in post-split coroutines. This happens relatively
rarely because CGSCC performs the passes on the callees before the
caller. However, if multiple coroutines coexist in one SCC, this
situation does happen (and prevents us from having potentially unbound
frame size due to recursion.)

You can find episode 1: Clang FE of this patch series at
https://github.com/llvm/llvm-project/pull/99282
Episode 2: CoroSplit at https://github.com/llvm/llvm-project/pull/99283
2024-09-08 23:09:40 -07:00

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; Validate ThinLTO post link pipeline when we have instrumentation PGO
;
; Postlink pipelines:
; RUN: opt -disable-verify -verify-analysis-invalidation=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<O1>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O1,%llvmcheckext
; RUN: opt -disable-verify -verify-analysis-invalidation=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<O2>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-analysis-invalidation=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-O3,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-analysis-invalidation=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<Os>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-Os,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-analysis-invalidation=0 -eagerly-invalidate-analyses=0 -debug-pass-manager \
; RUN: -passes='thinlto<Oz>' -S %s 2>&1 \
; RUN: | FileCheck %s --check-prefixes=CHECK-O,CHECK-O23SZ,%llvmcheckext
; RUN: opt -disable-verify -verify-analysis-invalidation=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-O2,CHECK-O23SZ,%llvmcheckext
; Suppress FileCheck --allow-unused-prefixes=false diagnostics.
; CHECK-NOEXT: {{^}}
; CHECK-EP-PIPELINE-START: Running pass: NoOpModulePass
; CHECK-O: 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: OpenMPOptPass
; CHECK-O-NEXT: Running pass: LowerTypeTestsPass
; CHECK-O-NEXT: Running pass: IPSCCPPass
; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
; CHECK-O-NEXT: Running pass: GlobalOptPass
; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
; CHECK-O-NEXT: Running pass: PromotePass
; CHECK-O-NEXT: Running pass: InstCombinePass
; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
; 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
; CHECK-O-NEXT: Running analysis: BranchProbabilityAnalysis on foo
; CHECK-O-NEXT: Running analysis: LoopAnalysis on foo
; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis on foo
; CHECK-O-NEXT: Running pass: SimplifyCFGPass
; CHECK-O-NEXT: Running pass: AlwaysInlinerPass
; 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: 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-O23SZ-NEXT: Running pass: AggressiveInstCombinePass
; 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-O23SZ-NEXT: Running pass: ConstraintEliminationPass
; CHECK-O23SZ-NEXT: Running analysis: ScalarEvolutionAnalysis
; CHECK-O-NEXT: Running pass: LoopSimplifyPass
; CHECK-O-NEXT: Running pass: LCSSAPass
; CHECK-O1-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: MoveAutoInitPass on foo
; 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: CoroAnnotationElidePass
; 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: InferAlignmentPass
; 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: InferAlignmentPass
; CHECK-O-NEXT: Running pass: InstCombinePass
; 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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