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 -verify-cfg-preserved=0 -debug-pass-manager \
12; RUN:     -passes='thinlto-pre-link<O1>' -S %s 2>&1 \
13; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O1,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS
14; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
15; RUN:     -passes='thinlto-pre-link<O2>' -S  %s 2>&1 \
16; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-O23SZ,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS
17; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
18; RUN:     -passes='thinlto-pre-link<O3>' -S -passes-ep-pipeline-start='no-op-module' %s 2>&1 \
19; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O3,CHECK-O23SZ,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS,CHECK-EP-PIPELINE-START
20; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
21; RUN:     -passes='thinlto-pre-link<Os>' -S %s 2>&1 \
22; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Os,CHECK-O23SZ,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS
23; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
24; RUN:     -passes='thinlto-pre-link<Oz>' -S %s 2>&1 \
25; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Oz,CHECK-O23SZ,CHECK-PRELINK-O,CHECK-PRELINK-O-NODIS
26; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager -new-pm-debug-info-for-profiling \
27; RUN:     -passes='thinlto-pre-link<O2>' -S  %s 2>&1 \
28; RUN:     | FileCheck %s --check-prefixes=CHECK-DIS,CHECK-O,CHECK-O2,CHECK-O23SZ,CHECK-PRELINK-O
29;
30; Postlink pipelines:
31; RUN: opt -disable-verify -verify-cfg-preserved=0 -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,%llvmcheckext
34; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
35; RUN:     -passes='thinlto<O2>' -S  %s 2>&1 \
36; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O2,CHECK-O23SZ,CHECK-POSTLINK-O,%llvmcheckext,CHECK-POSTLINK-O2
37; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager -passes-ep-pipeline-start='no-op-module' \
38; RUN:     -passes='thinlto<O3>' -S  %s 2>&1 \
39; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-O3,CHECK-O23SZ,CHECK-POSTLINK-O,%llvmcheckext,CHECK-POSTLINK-O3
40; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
41; RUN:     -passes='thinlto<Os>' -S %s 2>&1 \
42; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Os,CHECK-O23SZ,CHECK-POSTLINK-O,%llvmcheckext,CHECK-POSTLINK-Os
43; RUN: opt -disable-verify -verify-cfg-preserved=0 -debug-pass-manager \
44; RUN:     -passes='thinlto<Oz>' -S %s 2>&1 \
45; RUN:     | FileCheck %s --check-prefixes=CHECK-O,CHECK-Oz,CHECK-O23SZ,CHECK-POSTLINK-O,%llvmcheckext
46; RUN: opt -disable-verify -verify-cfg-preserved=0 -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-O23SZ,CHECK-POSTLINK-O,%llvmcheckext,CHECK-POSTLINK-O2
49
50; Suppress FileCheck --allow-unused-prefixes=false diagnostics.
51; CHECK-NOEXT: {{^}}
52
53; CHECK-O: Starting llvm::Module pass manager run.
54; CHECK-O-NEXT: Running pass: Annotation2Metadata
55; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
56; CHECK-EP-PIPELINE-START-NEXT: Running pass: NoOpModulePass
57; CHECK-DIS-NEXT: Running analysis: InnerAnalysisManagerProxy
58; CHECK-DIS-NEXT: Running pass: AddDiscriminatorsPass
59; CHECK-POSTLINK-O-NEXT: Running pass: PGOIndirectCallPromotion
60; CHECK-POSTLINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
61; CHECK-POSTLINK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
62; CHECK-POSTLINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
63; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
64; CHECK-PRELINK-O-NODIS-NEXT: Running analysis: InnerAnalysisManagerProxy
65; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
66; CHECK-O-NEXT: Starting llvm::Function pass manager run.
67; CHECK-O-NEXT: Running pass: LowerExpectIntrinsicPass
68; CHECK-O-NEXT: Running pass: SimplifyCFGPass
69; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
70; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
71; CHECK-O-NEXT: Running pass: SROA
72; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
73; CHECK-O-NEXT: Running pass: EarlyCSEPass
74; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
75; CHECK-O3-NEXT: Running pass: CallSiteSplittingPass
76; CHECK-O-NEXT: Finished llvm::Function pass manager run.
77; CHECK-O2-NEXT: Running pass: OpenMPOptPass
78; CHECK-O3-NEXT: Running pass: OpenMPOptPass
79; CHECK-POSTLINK-O-NEXT: Running pass: LowerTypeTestsPass
80; CHECK-O-NEXT: Running pass: IPSCCPPass
81; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
82; CHECK-O-NEXT: Running pass: GlobalOptPass
83; CHECK-O-NEXT: Running pass: PromotePass
84; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
85; CHECK-O-NEXT: Starting llvm::Function pass manager run.
86; CHECK-O-NEXT: Running pass: InstCombinePass
87; CHECK-PRELINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
88; CHECK-O-NEXT: Running analysis: AAManager
89; CHECK-O-NEXT: Running analysis: BasicAA
90; CHECK-O-NEXT: Running analysis: ScopedNoAliasAA
91; CHECK-O-NEXT: Running analysis: TypeBasedAA
92; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
93; CHECK-O-NEXT: Running pass: SimplifyCFGPass
94; CHECK-O-NEXT: Finished llvm::Function pass manager run.
95; CHECK-O-NEXT: Running pass: ModuleInlinerWrapperPass
96; CHECK-O-NEXT: Running analysis: InlineAdvisorAnalysis
97; CHECK-O-NEXT: Starting llvm::Module pass manager run.
98; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
99; CHECK-O-NEXT: Running analysis: GlobalsAA
100; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
101; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
102; CHECK-PRELINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
103; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
104; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
105; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
106; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
107; CHECK-O-NEXT: Running pass: DevirtSCCRepeatedPass
108; CHECK-O-NEXT: Starting CGSCC pass manager run.
109; CHECK-O-NEXT: Running pass: InlinerPass
110; CHECK-O-NEXT: Running pass: InlinerPass
111; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
112; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
113; CHECK-O2-NEXT: Running pass: OpenMPOptCGSCCPass on (foo)
114; CHECK-O3-NEXT: Running pass: OpenMPOptCGSCCPass on (foo)
115; CHECK-O-NEXT: Starting llvm::Function pass manager run.
116; CHECK-O-NEXT: Running pass: SROA
117; CHECK-O-NEXT: Running pass: EarlyCSEPass
118; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
119; CHECK-O23SZ-NEXT: Running pass: SpeculativeExecutionPass
120; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
121; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
122; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
123; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
124; CHECK-O-NEXT: Running pass: SimplifyCFGPass
125; CHECK-O3-NEXT: Running pass: AggressiveInstCombinePass
126; CHECK-O-NEXT: Running pass: InstCombinePass
127; CHECK-O1-NEXT: Running pass: LibCallsShrinkWrapPass
128; CHECK-O2-NEXT: Running pass: LibCallsShrinkWrapPass
129; CHECK-O3-NEXT: Running pass: LibCallsShrinkWrapPass
130; CHECK-O23SZ-NEXT: Running pass: TailCallElimPass
131; CHECK-O-NEXT: Running pass: SimplifyCFGPass
132; CHECK-O-NEXT: Running pass: ReassociatePass
133; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
134; CHECK-O-NEXT: Starting llvm::Function pass manager run
135; CHECK-O-NEXT: Running pass: LoopSimplifyPass
136; CHECK-O-NEXT: Running analysis: LoopAnalysis
137; CHECK-O-NEXT: Running pass: LCSSAPass
138; CHECK-O-NEXT: Finished llvm::Function pass manager run
139; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
140; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
141; CHECK-O-NEXT: Starting Loop pass manager run.
142; CHECK-O-NEXT: Running pass: LoopInstSimplifyPass
143; CHECK-O-NEXT: Running pass: LoopSimplifyCFGPass
144; CHECK-O-NEXT: Running pass: LICM
145; CHECK-O-NEXT: Running pass: LoopRotatePass
146; CHECK-O-NEXT: Running pass: LICM
147; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
148; CHECK-O-NEXT: Finished Loop pass manager run.
149; CHECK-O-NEXT: Running pass: SimplifyCFGPass
150; CHECK-O-NEXT: Running pass: InstCombinePass
151; CHECK-O-NEXT: Starting llvm::Function pass manager run
152; CHECK-O-NEXT: Running pass: LoopSimplifyPass
153; CHECK-O-NEXT: Running pass: LCSSAPass
154; CHECK-O-NEXT: Finished llvm::Function pass manager run
155; CHECK-O-NEXT: Starting Loop pass manager run.
156; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
157; CHECK-O-NEXT: Running pass: IndVarSimplifyPass
158; CHECK-O-NEXT: Running pass: LoopDeletionPass
159; CHECK-O-NEXT: Running pass: LoopFullUnrollPass
160; CHECK-O-NEXT: Finished Loop pass manager run.
161; CHECK-O-NEXT: Running pass: SROA on foo
162; CHECK-Os-NEXT: Running pass: MergedLoadStoreMotionPass
163; CHECK-Os-NEXT: Running pass: GVN
164; CHECK-Os-NEXT: Running analysis: MemoryDependenceAnalysis
165; CHECK-Os-NEXT: Running analysis: PhiValuesAnalysis
166; CHECK-Oz-NEXT: Running pass: MergedLoadStoreMotionPass
167; CHECK-Oz-NEXT: Running pass: GVN
168; CHECK-Oz-NEXT: Running analysis: MemoryDependenceAnalysis
169; CHECK-Oz-NEXT: Running analysis: PhiValuesAnalysis
170; CHECK-O2-NEXT: Running pass: MergedLoadStoreMotionPass
171; CHECK-O2-NEXT: Running pass: GVN
172; CHECK-O2-NEXT: Running analysis: MemoryDependenceAnalysis
173; CHECK-O2-NEXT: Running analysis: PhiValuesAnalysis
174; CHECK-O3-NEXT: Running pass: MergedLoadStoreMotionPass
175; CHECK-O3-NEXT: Running pass: GVN
176; CHECK-O3-NEXT: Running analysis: MemoryDependenceAnalysis
177; CHECK-O3-NEXT: Running analysis: PhiValuesAnalysis
178; CHECK-O1-NEXT: Running pass: MemCpyOptPass
179; CHECK-O-NEXT: Running pass: SCCPPass
180; CHECK-O-NEXT: Running pass: BDCEPass
181; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
182; CHECK-O-NEXT: Running pass: InstCombinePass
183; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
184; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
185; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
186; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
187; CHECK-O-NEXT: Running pass: ADCEPass
188; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis
189; CHECK-O23SZ-NEXT: Running pass: MemCpyOptPass
190; CHECK-O23SZ-NEXT: Running pass: DSEPass
191; CHECK-O23SZ-NEXT: Starting llvm::Function pass manager run
192; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass
193; CHECK-O23SZ-NEXT: Running pass: LCSSAPass
194; CHECK-O23SZ-NEXT: Finished llvm::Function pass manager run
195; CHECK-O23SZ-NEXT: Running pass: LICMPass on Loop at depth 1 containing: %loop
196; CHECK-O-NEXT: Running pass: SimplifyCFGPass
197; CHECK-O-NEXT: Running pass: InstCombinePass
198; CHECK-O-NEXT: Finished llvm::Function pass manager run.
199; CHECK-O-NEXT: Finished CGSCC pass manager run.
200; CHECK-O-NEXT: Finished llvm::Module pass manager run.
201; CHECK-PRELINK-O-NEXT: Running pass: GlobalOptPass
202; CHECK-POSTLINK-O-NEXT: Running pass: GlobalOptPass
203; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
204; CHECK-POSTLINK-O-NEXT: Running pass: EliminateAvailableExternallyPass
205; CHECK-POSTLINK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
206; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
207; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run.
208; CHECK-POSTLINK-O-NEXT: Running pass: Float2IntPass
209; CHECK-POSTLINK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
210; CHECK-EXT: Running pass: {{.*}}::Bye
211; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run
212; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
213; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
214; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run
215; CHECK-POSTLINK-O-NEXT: Running pass: LoopRotatePass
216; CHECK-POSTLINK-O-NEXT: Running pass: LoopDistributePass
217; CHECK-POSTLINK-O-NEXT: Running pass: InjectTLIMappings
218; CHECK-POSTLINK-O-NEXT: Running pass: LoopVectorizePass
219; CHECK-POSTLINK-O-NEXT: Running analysis: BlockFrequencyAnalysis
220; CHECK-POSTLINK-O-NEXT: Running analysis: BranchProbabilityAnalysis
221; CHECK-POSTLINK-O-NEXT: Running pass: LoopLoadEliminationPass
222; CHECK-POSTLINK-O-NEXT: Running analysis: LoopAccessAnalysis
223; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
224; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
225; CHECK-POSTLINK-O2-NEXT: Running pass: SLPVectorizerPass
226; CHECK-POSTLINK-O3-NEXT: Running pass: SLPVectorizerPass
227; CHECK-POSTLINK-Os-NEXT: Running pass: SLPVectorizerPass
228; CHECK-POSTLINK-O-NEXT: Running pass: VectorCombinePass
229; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
230; CHECK-POSTLINK-O-NEXT: Running pass: LoopUnrollPass
231; CHECK-POSTLINK-O-NEXT: Running pass: WarnMissedTransformationsPass
232; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
233; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
234; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run
235; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
236; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
237; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run
238; CHECK-POSTLINK-O-NEXT: Running pass: LICMPass
239; CHECK-POSTLINK-O-NEXT: Running pass: AlignmentFromAssumptionsPass
240; CHECK-POSTLINK-O-NEXT: Running pass: LoopSinkPass
241; CHECK-POSTLINK-O-NEXT: Running pass: InstSimplifyPass
242; CHECK-POSTLINK-O-NEXT: Running pass: DivRemPairsPass
243; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
244; CHECK-POSTLINK-O-NEXT: Running pass: SpeculateAroundPHIsPass
245; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run.
246; CHECK-POSTLINK-O-NEXT: Running pass: CGProfilePass
247; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
248; CHECK-POSTLINK-O-NEXT: Running pass: ConstantMergePass
249; CHECK-POSTLINK-O-NEXT: Running pass: RelLookupTableConverterPass
250; CHECK-POSTLINK-O-NEXT: Running analysis: TargetIRAnalysis
251; CHECK-O-NEXT:          Running pass: AnnotationRemarksPass on foo
252; CHECK-PRELINK-O-NEXT: Running pass: CanonicalizeAliasesPass
253; CHECK-PRELINK-O-NEXT: Running pass: NameAnonGlobalPass
254; CHECK-O-NEXT: Running pass: PrintModulePass
255
256; Make sure we get the IR back out without changes when we print the module.
257; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
258; CHECK-O-NEXT: entry:
259; CHECK-O-NEXT:   br label %loop
260; CHECK-O:      loop:
261; CHECK-O-NEXT:   %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
262; CHECK-O-NEXT:   %iv.next = add i32 %iv, 1
263; CHECK-O-NEXT:   tail call void @bar()
264; CHECK-O-NEXT:   %cmp = icmp eq i32 %iv, %n
265; CHECK-O-NEXT:   br i1 %cmp, label %exit, label %loop
266; CHECK-O:      exit:
267; CHECK-O-NEXT:   ret void
268; CHECK-O-NEXT: }
269;
270; CHECK-O-NEXT: Finished llvm::Module pass manager run.
271
272declare void @bar() local_unnamed_addr
273
274define void @foo(i32 %n) local_unnamed_addr {
275entry:
276  br label %loop
277loop:
278  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
279  %iv.next = add i32 %iv, 1
280  tail call void @bar()
281  %cmp = icmp eq i32 %iv, %n
282  br i1 %cmp, label %exit, label %loop
283exit:
284  ret void
285}
286