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a42343417c
Summary: Enable some of the existing size optimizations for cold code under PGO. A ~5% code size saving in big internal app under PGO. The way it gets BFI/PSI is discussed in the RFC thread http://lists.llvm.org/pipermail/llvm-dev/2019-March/130894.html Note it doesn't currently touch loop passes. Reviewers: davidxl, eraman Reviewed By: eraman Subscribers: mgorny, javed.absar, smeenai, mehdi_amini, eraman, zzheng, steven_wu, dexonsmith, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59514 llvm-svn: 358422
130 lines
6.4 KiB
LLVM
130 lines
6.4 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 --check-prefix=CHECK-O1
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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: --check-prefix=CHECK-O3
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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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; RUN: opt -disable-verify -debug-pass-manager \
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; RUN: -passes='lto<O3>' -S %s -passes-ep-peephole='no-op-function' 2>&1 \
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; RUN: | FileCheck %s --check-prefix=CHECK-O --check-prefix=CHECK-O2 \
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; RUN: --check-prefix=CHECK-O3 --check-prefix=CHECK-EP-Peephole
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; CHECK-O: Running analysis: PassInstrumentationAnalysis
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; CHECK-O-NEXT: 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: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
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; CHECK-O2-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}Module
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; CHECK-O2-NEXT: Running analysis: PassInstrumentationAnalysis
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; CHECK-O2-NEXT: Starting llvm::Function pass manager run.
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; CHECK-O2-NEXT: Running pass: CallSiteSplittingPass on foo
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; CHECK-O2-NEXT: Running analysis: TargetLibraryAnalysis on foo
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; CHECK-O2-NEXT: Running analysis: TargetIRAnalysis on foo
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; CHECK-O2-NEXT: Running analysis: DominatorTreeAnalysis on foo
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; CHECK-O2-NEXT: Finished llvm::Function pass manager run.
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; CHECK-O2-NEXT: PGOIndirectCallPromotion
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; CHECK-O2-NEXT: Running analysis: ProfileSummaryAnalysis
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; CHECK-O2-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
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; CHECK-O2-NEXT: Running pass: IPSCCPPass
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; CHECK-O2-NEXT: Running analysis: AssumptionAnalysis on foo
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; CHECK-O2-NEXT: Running pass: CalledValuePropagationPass
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; CHECK-O-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}PostOrderFunctionAttrsPass>
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; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}SCC
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; CHECK-O1-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}Function
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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: PassInstrumentationAnalysis
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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-O1-NEXT: Running analysis: PassInstrumentationAnalysis
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; CHECK-O1-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-O1-NEXT: Running pass: LowerTypeTestsPass
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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 pass: ConstantMergePass
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; CHECK-O2-NEXT: Running pass: DeadArgumentEliminationPass
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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-O3-NEXT: Running pass: AggressiveInstCombinePass
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; CHECK-O2-NEXT: Running pass: InstCombinePass
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; CHECK-O2-NEXT: Running analysis: OuterAnalysisManagerProxy
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; CHECK-EP-Peephole-NEXT: Running pass: NoOpFunctionPass
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; CHECK-O2-NEXT: Finished llvm::Function pass manager run.
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; CHECK-O2-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}InlinerPass>
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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-EP-Peephole-NEXT: Running pass: NoOpFunctionPass
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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: Running pass: TailCallElimPass 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: PhiValuesAnalysis
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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: LowerTypeTestsPass
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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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