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: 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-POSTLINK-O-NEXT: Running pass: LowerTypeTestsPass
78; CHECK-O-NEXT: Running pass: IPSCCPPass
79; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
80; CHECK-O-NEXT: Running pass: GlobalOptPass
81; CHECK-O-NEXT: Running pass: PromotePass
82; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
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 analysis: AAManager
87; CHECK-O-NEXT: Running analysis: BasicAA
88; CHECK-O-NEXT: Running analysis: ScopedNoAliasAA
89; CHECK-O-NEXT: Running analysis: TypeBasedAA
90; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
91; CHECK-O-NEXT: Running pass: SimplifyCFGPass
92; CHECK-O-NEXT: Finished llvm::Function pass manager run.
93; CHECK-O-NEXT: Running pass: ModuleInlinerWrapperPass
94; CHECK-O-NEXT: Running analysis: InlineAdvisorAnalysis
95; CHECK-O-NEXT: Starting llvm::Module pass manager run.
96; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
97; CHECK-O-NEXT: Running analysis: GlobalsAA
98; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
99; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
100; CHECK-PRELINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
101; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
102; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
103; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
104; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
105; CHECK-O-NEXT: Running pass: DevirtSCCRepeatedPass
106; CHECK-O-NEXT: Starting CGSCC pass manager run.
107; CHECK-O-NEXT: Running pass: InlinerPass
108; CHECK-O-NEXT: Running pass: InlinerPass
109; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
110; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
111; CHECK-O2-NEXT: Running pass: OpenMPOptPass on (foo)
112; CHECK-O3-NEXT: Running pass: OpenMPOptPass on (foo)
113; CHECK-O-NEXT: Starting llvm::Function pass manager run.
114; CHECK-O-NEXT: Running pass: SROA
115; CHECK-O-NEXT: Running pass: EarlyCSEPass
116; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
117; CHECK-O23SZ-NEXT: Running pass: SpeculativeExecutionPass
118; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
119; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
120; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
121; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
122; CHECK-O-NEXT: Running pass: SimplifyCFGPass
123; CHECK-O3-NEXT: Running pass: AggressiveInstCombinePass
124; CHECK-O-NEXT: Running pass: InstCombinePass
125; CHECK-O1-NEXT: Running pass: LibCallsShrinkWrapPass
126; CHECK-O2-NEXT: Running pass: LibCallsShrinkWrapPass
127; CHECK-O3-NEXT: Running pass: LibCallsShrinkWrapPass
128; CHECK-O23SZ-NEXT: Running pass: TailCallElimPass
129; CHECK-O-NEXT: Running pass: SimplifyCFGPass
130; CHECK-O-NEXT: Running pass: ReassociatePass
131; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
132; CHECK-O-NEXT: Starting llvm::Function pass manager run
133; CHECK-O-NEXT: Running pass: LoopSimplifyPass
134; CHECK-O-NEXT: Running analysis: LoopAnalysis
135; CHECK-O-NEXT: Running pass: LCSSAPass
136; CHECK-O-NEXT: Finished llvm::Function pass manager run
137; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
138; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
139; CHECK-O-NEXT: Starting Loop pass manager run.
140; CHECK-O-NEXT: Running pass: LoopInstSimplifyPass
141; CHECK-O-NEXT: Running pass: LoopSimplifyCFGPass
142; CHECK-O-NEXT: Running pass: LICM
143; CHECK-O-NEXT: Running pass: LoopRotatePass
144; CHECK-O-NEXT: Running pass: LICM
145; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
146; CHECK-O-NEXT: Finished Loop pass manager run.
147; CHECK-O-NEXT: Running pass: SimplifyCFGPass
148; CHECK-O-NEXT: Running pass: InstCombinePass
149; CHECK-O-NEXT: Starting llvm::Function pass manager run
150; CHECK-O-NEXT: Running pass: LoopSimplifyPass
151; CHECK-O-NEXT: Running pass: LCSSAPass
152; CHECK-O-NEXT: Finished llvm::Function pass manager run
153; CHECK-O-NEXT: Starting Loop pass manager run.
154; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
155; CHECK-O-NEXT: Running pass: IndVarSimplifyPass
156; CHECK-O-NEXT: Running pass: LoopDeletionPass
157; CHECK-O-NEXT: Running pass: LoopFullUnrollPass
158; CHECK-O-NEXT: Finished Loop pass manager run.
159; CHECK-O-NEXT: Running pass: SROA on foo
160; CHECK-Os-NEXT: Running pass: MergedLoadStoreMotionPass
161; CHECK-Os-NEXT: Running pass: GVN
162; CHECK-Os-NEXT: Running analysis: MemoryDependenceAnalysis
163; CHECK-Os-NEXT: Running analysis: PhiValuesAnalysis
164; CHECK-Oz-NEXT: Running pass: MergedLoadStoreMotionPass
165; CHECK-Oz-NEXT: Running pass: GVN
166; CHECK-Oz-NEXT: Running analysis: MemoryDependenceAnalysis
167; CHECK-Oz-NEXT: Running analysis: PhiValuesAnalysis
168; CHECK-O2-NEXT: Running pass: MergedLoadStoreMotionPass
169; CHECK-O2-NEXT: Running pass: GVN
170; CHECK-O2-NEXT: Running analysis: MemoryDependenceAnalysis
171; CHECK-O2-NEXT: Running analysis: PhiValuesAnalysis
172; CHECK-O3-NEXT: Running pass: MergedLoadStoreMotionPass
173; CHECK-O3-NEXT: Running pass: GVN
174; CHECK-O3-NEXT: Running analysis: MemoryDependenceAnalysis
175; CHECK-O3-NEXT: Running analysis: PhiValuesAnalysis
176; CHECK-O1-NEXT: Running pass: MemCpyOptPass
177; CHECK-O-NEXT: Running pass: SCCPPass
178; CHECK-O-NEXT: Running pass: BDCEPass
179; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
180; CHECK-O-NEXT: Running pass: InstCombinePass
181; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
182; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
183; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
184; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
185; CHECK-O-NEXT: Running pass: ADCEPass
186; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis
187; CHECK-O23SZ-NEXT: Running pass: MemCpyOptPass
188; CHECK-O23SZ-NEXT: Running pass: DSEPass
189; CHECK-O23SZ-NEXT: Starting llvm::Function pass manager run
190; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass
191; CHECK-O23SZ-NEXT: Running pass: LCSSAPass
192; CHECK-O23SZ-NEXT: Finished llvm::Function pass manager run
193; CHECK-O23SZ-NEXT: Running pass: LICMPass on Loop at depth 1 containing: %loop
194; CHECK-O-NEXT: Running pass: SimplifyCFGPass
195; CHECK-O-NEXT: Running pass: InstCombinePass
196; CHECK-O-NEXT: Finished llvm::Function pass manager run.
197; CHECK-O-NEXT: Finished CGSCC pass manager run.
198; CHECK-O-NEXT: Finished llvm::Module pass manager run.
199; CHECK-PRELINK-O-NEXT: Running pass: GlobalOptPass
200; CHECK-POSTLINK-O-NEXT: Running pass: GlobalOptPass
201; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
202; CHECK-POSTLINK-O-NEXT: Running pass: EliminateAvailableExternallyPass
203; CHECK-POSTLINK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
204; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
205; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run.
206; CHECK-POSTLINK-O-NEXT: Running pass: Float2IntPass
207; CHECK-POSTLINK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
208; CHECK-EXT: Running pass: {{.*}}::Bye
209; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run
210; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
211; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
212; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run
213; CHECK-POSTLINK-O-NEXT: Running pass: LoopRotatePass
214; CHECK-POSTLINK-O-NEXT: Running pass: LoopDistributePass
215; CHECK-POSTLINK-O-NEXT: Running pass: InjectTLIMappings
216; CHECK-POSTLINK-O-NEXT: Running pass: LoopVectorizePass
217; CHECK-POSTLINK-O-NEXT: Running analysis: BlockFrequencyAnalysis
218; CHECK-POSTLINK-O-NEXT: Running analysis: BranchProbabilityAnalysis
219; CHECK-POSTLINK-O-NEXT: Running pass: LoopLoadEliminationPass
220; CHECK-POSTLINK-O-NEXT: Running analysis: LoopAccessAnalysis
221; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
222; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
223; CHECK-POSTLINK-O2-NEXT: Running pass: SLPVectorizerPass
224; CHECK-POSTLINK-O3-NEXT: Running pass: SLPVectorizerPass
225; CHECK-POSTLINK-Os-NEXT: Running pass: SLPVectorizerPass
226; CHECK-POSTLINK-O-NEXT: Running pass: VectorCombinePass
227; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
228; CHECK-POSTLINK-O-NEXT: Running pass: LoopUnrollPass
229; CHECK-POSTLINK-O-NEXT: Running pass: WarnMissedTransformationsPass
230; CHECK-POSTLINK-O-NEXT: Running pass: InstCombinePass
231; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
232; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run
233; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
234; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
235; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run
236; CHECK-POSTLINK-O-NEXT: Running pass: LICMPass
237; CHECK-POSTLINK-O-NEXT: Running pass: AlignmentFromAssumptionsPass
238; CHECK-POSTLINK-O-NEXT: Running pass: LoopSinkPass
239; CHECK-POSTLINK-O-NEXT: Running pass: InstSimplifyPass
240; CHECK-POSTLINK-O-NEXT: Running pass: DivRemPairsPass
241; CHECK-POSTLINK-O-NEXT: Running pass: SimplifyCFGPass
242; CHECK-POSTLINK-O-NEXT: Running pass: SpeculateAroundPHIsPass
243; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run.
244; CHECK-POSTLINK-O-NEXT: Running pass: CGProfilePass
245; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
246; CHECK-POSTLINK-O-NEXT: Running pass: ConstantMergePass
247; CHECK-O-NEXT:          Running pass: AnnotationRemarksPass on foo
248; CHECK-PRELINK-O-NEXT: Running pass: CanonicalizeAliasesPass
249; CHECK-PRELINK-O-NEXT: Running pass: NameAnonGlobalPass
250; CHECK-O-NEXT: Running pass: PrintModulePass
251
252; Make sure we get the IR back out without changes when we print the module.
253; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
254; CHECK-O-NEXT: entry:
255; CHECK-O-NEXT:   br label %loop
256; CHECK-O:      loop:
257; CHECK-O-NEXT:   %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
258; CHECK-O-NEXT:   %iv.next = add i32 %iv, 1
259; CHECK-O-NEXT:   tail call void @bar()
260; CHECK-O-NEXT:   %cmp = icmp eq i32 %iv, %n
261; CHECK-O-NEXT:   br i1 %cmp, label %exit, label %loop
262; CHECK-O:      exit:
263; CHECK-O-NEXT:   ret void
264; CHECK-O-NEXT: }
265;
266; CHECK-O-NEXT: Finished llvm::Module pass manager run.
267
268declare void @bar() local_unnamed_addr
269
270define void @foo(i32 %n) local_unnamed_addr {
271entry:
272  br label %loop
273loop:
274  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
275  %iv.next = add i32 %iv, 1
276  tail call void @bar()
277  %cmp = icmp eq i32 %iv, %n
278  br i1 %cmp, label %exit, label %loop
279exit:
280  ret void
281}
282