1; The IR below was crafted so as:
2; 1) To have a loop, so we create a loop pass manager
3; 2) To be "immutable" in the sense that no pass in the standard
4;    pipeline will modify it.
5; Since no transformations take place, we don't expect any analyses
6; to be invalidated.
7; Any invalidation that shows up here is a bug, unless we started modifying
8; the IR, in which case we need to make it immutable harder.
9;
10; Prelink pipelines:
11; RUN: opt -disable-verify -debug-pass-manager \
12; RUN:     -passes='thinlto-pre-link<O1>,name-anon-globals' -S %s 2>&1 \
13; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O1,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-PRELINK-O1
14; RUN: opt -disable-verify -debug-pass-manager \
15; RUN:     -passes='thinlto-pre-link<O2>,name-anon-globals' -S  %s 2>&1 \
16; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-PRELINK-O2
17; RUN: opt -disable-verify -debug-pass-manager \
18; RUN:     -passes='thinlto-pre-link<O3>,name-anon-globals' -S  %s 2>&1 \
19; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O3,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-PRELINK-O3
20; RUN: opt -disable-verify -debug-pass-manager \
21; RUN:     -passes='thinlto-pre-link<Os>,name-anon-globals' -S %s 2>&1 \
22; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Os,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-PRELINK-Os
23; RUN: opt -disable-verify -debug-pass-manager \
24; RUN:     -passes='thinlto-pre-link<Oz>,name-anon-globals' -S %s 2>&1 \
25; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Oz,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-PRELINK-Oz
26; RUN: opt -disable-verify -debug-pass-manager -new-pm-debug-info-for-profiling \
27; RUN:     -passes='thinlto-pre-link<O2>,name-anon-globals' -S  %s 2>&1 \
28; RUN:     | FileCheck %s --check-prefixes=CHECK-DIS,CHECK-O,CHECK-O2,CHECK-PRELINK-O,CHECK-PRELINK-O2
29;
30; Postlink pipelines:
31; RUN: opt -disable-verify -debug-pass-manager \
32; RUN:     -passes='thinlto<O1>' -S %s 2>&1 \
33; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O1,CHECK-POSTLINK-O,CHECK-POSTLINK-O1
34; RUN: opt -disable-verify -debug-pass-manager \
35; RUN:     -passes='thinlto<O2>' -S  %s 2>&1 \
36; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-POSTLINK-O,CHECK-POSTLINK-O2
37; RUN: opt -disable-verify -debug-pass-manager \
38; RUN:     -passes='thinlto<O3>' -S  %s 2>&1 \
39; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O3,CHECK-POSTLINK-O,CHECK-POSTLINK-O3
40; RUN: opt -disable-verify -debug-pass-manager \
41; RUN:     -passes='thinlto<Os>' -S %s 2>&1 \
42; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Os,CHECK-POSTLINK-O,CHECK-POSTLINK-Os
43; RUN: opt -disable-verify -debug-pass-manager \
44; RUN:     -passes='thinlto<Oz>' -S %s 2>&1 \
45; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Oz,CHECK-POSTLINK-O,CHECK-POSTLINK-Oz
46; RUN: opt -disable-verify -debug-pass-manager -new-pm-debug-info-for-profiling \
47; RUN:     -passes='thinlto<O2>' -S  %s 2>&1 \
48; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-POSTLINK-O,CHECK-POSTLINK-O2
49;
50; CHECK-O: Starting llvm::Module pass manager run.
51; CHECK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
52; CHECK-O-NEXT: Starting llvm::Module pass manager run.
53; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
54; CHECK-DIS-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}AddDiscriminatorsPass{{.*}}>
55; CHECK-DIS-NEXT: Running analysis: InnerAnalysisManagerProxy
56; CHECK-POSTLINK-O-NEXT: Running pass: PGOIndirectCallPromotion
57; CHECK-POSTLINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
58; CHECK-POSTLINK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
59; CHECK-POSTLINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
60; CHECK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
61; CHECK-O-NEXT: Starting llvm::Module pass manager run.
62; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
63; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
64; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
65; CHECK-PRELINK-O-NODIS-NEXT: Running analysis: InnerAnalysisManagerProxy
66; CHECK-O-NEXT: Starting llvm::Function pass manager run.
67; CHECK-O-NEXT: Running pass: SimplifyCFGPass
68; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
69; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
70; CHECK-O-NEXT: Running pass: SROA
71; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
72; CHECK-O-NEXT: Running pass: EarlyCSEPass
73; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
74; CHECK-O-NEXT: Running pass: LowerExpectIntrinsicPass
75; CHECK-O3-NEXT: Running pass: CallSiteSplittingPass
76; CHECK-O-NEXT: Finished llvm::Function pass manager run.
77; CHECK-O-NEXT: Running pass: IPSCCPPass
78; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
79; CHECK-O-NEXT: Running pass: GlobalOptPass
80; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PromotePass>
81; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
82; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
83; CHECK-O-NEXT: Starting llvm::Function pass manager run.
84; CHECK-O-NEXT: Running pass: InstCombinePass
85; CHECK-PRELINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
86; CHECK-O-NEXT: Running pass: SimplifyCFGPass
87; CHECK-O-NEXT: Finished llvm::Function pass manager run.
88; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
89; CHECK-O-NEXT: Running analysis: GlobalsAA
90; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
91; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
92; CHECK-PRELINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
93; CHECK-O-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}LazyCallGraph{{.*}}>
94; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
95; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
96; CHECK-O-NEXT: Starting CGSCC pass manager run.
97; CHECK-O-NEXT: Running pass: InlinerPass
98; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph{{.*}}>
99; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
100; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
101; CHECK-O-NEXT: Running analysis: AAManager
102; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
103; CHECK-O-NEXT: Running pass: CGSCCToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
104; CHECK-O-NEXT: Starting llvm::Function pass manager run.
105; CHECK-O-NEXT: Running pass: SROA
106; CHECK-O-NEXT: Running pass: EarlyCSEPass
107; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
108; CHECK-O-NEXT: Running pass: SpeculativeExecutionPass
109; CHECK-O-NEXT: Running pass: JumpThreadingPass
110; CHECK-O-NEXT: Running analysis: LazyValueAnalysis
111; CHECK-O-NEXT: Running pass: CorrelatedValuePropagationPass
112; CHECK-O-NEXT: Running pass: SimplifyCFGPass
113; CHECK-O-NEXT: Running pass: InstCombinePass
114; CHECK-O1-NEXT: Running pass: LibCallsShrinkWrapPass
115; CHECK-O2-NEXT: Running pass: LibCallsShrinkWrapPass
116; CHECK-O3-NEXT: Running pass: LibCallsShrinkWrapPass
117; CHECK-O-NEXT: Running pass: TailCallElimPass
118; CHECK-O-NEXT: Running pass: SimplifyCFGPass
119; CHECK-O-NEXT: Running pass: ReassociatePass
120; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
121; CHECK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopStandardAnalysisResults{{.*}}>
122; CHECK-O-NEXT: Running analysis: LoopAnalysis
123; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
124; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
125; CHECK-O-NEXT: Starting Loop pass manager run.
126; CHECK-O-NEXT: Running pass: LoopRotatePass
127; CHECK-O-NEXT: Running pass: LICM
128; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
129; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
130; CHECK-O-NEXT: Finished Loop pass manager run.
131; CHECK-O-NEXT: Running pass: SimplifyCFGPass
132; CHECK-O-NEXT: Running pass: InstCombinePass
133; CHECK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopStandardAnalysisResults{{.*}}>
134; CHECK-O-NEXT: Starting Loop pass manager run.
135; CHECK-O-NEXT: Running pass: IndVarSimplifyPass
136; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
137; CHECK-O-NEXT: Running pass: LoopDeletionPass
138; CHECK-O-NEXT: Running pass: LoopFullUnrollPass
139; CHECK-O-NEXT: Finished Loop pass manager run.
140; CHECK-Os-NEXT: Running pass: MergedLoadStoreMotionPass
141; CHECK-Os-NEXT: Running pass: GVN
142; CHECK-Os-NEXT: Running analysis: MemoryDependenceAnalysis
143; CHECK-Oz-NEXT: Running pass: MergedLoadStoreMotionPass
144; CHECK-Oz-NEXT: Running pass: GVN
145; CHECK-Oz-NEXT: Running analysis: MemoryDependenceAnalysis
146; CHECK-O2-NEXT: Running pass: MergedLoadStoreMotionPass
147; CHECK-O2-NEXT: Running pass: GVN
148; CHECK-O2-NEXT: Running analysis: MemoryDependenceAnalysis
149; CHECK-O3-NEXT: Running pass: MergedLoadStoreMotionPass
150; CHECK-O3-NEXT: Running pass: GVN
151; CHECK-O3-NEXT: Running analysis: MemoryDependenceAnalysis
152; CHECK-O-NEXT: Running pass: MemCpyOptPass
153; CHECK-O1-NEXT: Running analysis: MemoryDependenceAnalysis
154; CHECK-O-NEXT: Running pass: SCCPPass
155; CHECK-O-NEXT: Running pass: BDCEPass
156; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
157; CHECK-O-NEXT: Running pass: InstCombinePass
158; CHECK-O-NEXT: Running pass: JumpThreadingPass
159; CHECK-O-NEXT: Running pass: CorrelatedValuePropagationPass
160; CHECK-O-NEXT: Running pass: DSEPass
161; CHECK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LICMPass{{.*}}>
162; CHECK-O-NEXT: Running pass: ADCEPass
163; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis
164; CHECK-O-NEXT: Running pass: SimplifyCFGPass
165; CHECK-O-NEXT: Running pass: InstCombinePass
166; CHECK-O-NEXT: Finished llvm::Function pass manager run.
167; CHECK-O-NEXT: Finished CGSCC pass manager run.
168; CHECK-O-NEXT: Finished llvm::Module pass manager run.
169; CHECK-PRELINK-O-NEXT: Running pass: GlobalOptPass
170; CHECK-POSTLINK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
171; CHECK-POSTLINK-O-NEXT: Starting llvm::Module pass manager run.
172; CHECK-POSTLINK-O-NEXT: Running pass: GlobalOptPass
173; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
174; CHECK-POSTLINK-O-NEXT: Running pass: EliminateAvailableExternallyPass
175; CHECK-POSTLINK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
176; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
177; CHECK-POSTLINK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
178; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run.
179; CHECK-POSTLINK-O-NEXT: Running pass: Float2IntPass
180; CHECK-POSTLINK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopRotatePass
181; CHECK-POSTLINK-O-NEXT: Running pass: LoopDistributePass
182; CHECK-POSTLINK-O-NEXT: Running pass: LoopVectorizePass
183; CHECK-POSTLINK-O-NEXT: Running analysis: BlockFrequencyAnalysis
184; CHECK-POSTLINK-O-NEXT: Running analysis: BranchProbabilityAnalysis
185; CHECK-POSTLINK-O-NEXT: Running pass: LoopLoadEliminationPass
186; CHECK-POSTLINK-O-NEXT: Running analysis: LoopAccessAnalysis
187; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
188; CHECK-POSTLINK-O-NEXT: Running pass: SLPVectorizerPass
189; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
190; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
191; CHECK-POSTLINK-O-NEXT: Running pass: LoopUnrollPass
192; CHECK-POSTLINK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
193; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
194; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
195; CHECK-POSTLINK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LICMPass
196; CHECK-POSTLINK-O-NEXT: Running pass: AlignmentFromAssumptionsPass
197; CHECK-POSTLINK-O-NEXT: Running pass: LoopSinkPass
198; CHECK-POSTLINK-O-NEXT: Running pass: InstSimplifierPass
199; CHECK-POSTLINK-O-NEXT: Running pass: DivRemPairsPass
200; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
201; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run.
202; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
203; CHECK-POSTLINK-O-NEXT: Running pass: ConstantMergePass
204; CHECK-POSTLINK-O-NEXT: Finished llvm::Module pass manager run.
205; CHECK-O-NEXT: Finished llvm::Module pass manager run.
206; CHECK-PRELINK-O-NEXT: Running pass: NameAnonGlobalPass
207; CHECK-O-NEXT: Running pass: PrintModulePass
208
209; Make sure we get the IR back out without changes when we print the module.
210; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
211; CHECK-O-NEXT: entry:
212; CHECK-O-NEXT:   br label %loop
213; CHECK-O:      loop:
214; CHECK-O-NEXT:   %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
215; CHECK-O-NEXT:   %iv.next = add i32 %iv, 1
216; CHECK-O-NEXT:   tail call void @bar()
217; CHECK-O-NEXT:   %cmp = icmp eq i32 %iv, %n
218; CHECK-O-NEXT:   br i1 %cmp, label %exit, label %loop
219; CHECK-O:      exit:
220; CHECK-O-NEXT:   ret void
221; CHECK-O-NEXT: }
222;
223; CHECK-O-NEXT: Finished llvm::Module pass manager run.
224
225declare void @bar() local_unnamed_addr
226
227define void @foo(i32 %n) local_unnamed_addr {
228entry:
229  br label %loop
230loop:
231  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
232  %iv.next = add i32 %iv, 1
233  tail call void @bar()
234  %cmp = icmp eq i32 %iv, %n
235  br i1 %cmp, label %exit, label %loop
236exit:
237  ret void
238}
239