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