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-O23SZ,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 -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-PRELINK-O3,CHECK-EP-PIPELINE-START
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-O23SZ,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-O23SZ,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-O23SZ,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,%llvmcheckext,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-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,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-O23SZ,CHECK-POSTLINK-O,%llvmcheckext,CHECK-POSTLINK-O2
49;
50; CHECK-O: Starting llvm::Module pass manager run.
51; CHECK-O-NEXT: Starting llvm::Module pass manager run.
52; CHECK-O-NEXT: Running pass: ForceFunctionAttrsPass
53; CHECK-EP-PIPELINE-START-NEXT: Running pass: NoOpModulePass
54; CHECK-DIS-NEXT: Running analysis: InnerAnalysisManagerProxy
55; CHECK-DIS-NEXT: Running pass: AddDiscriminatorsPass
56; CHECK-O-NEXT: Starting llvm::Module pass manager run.
57; CHECK-POSTLINK-O-NEXT: Running pass: PGOIndirectCallPromotion
58; CHECK-POSTLINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
59; CHECK-POSTLINK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
60; CHECK-POSTLINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
61; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
62; CHECK-PRELINK-O-NODIS-NEXT: Running analysis: InnerAnalysisManagerProxy
63; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
64; CHECK-O-NEXT: Starting llvm::Function pass manager run.
65; CHECK-O-NEXT: Running pass: SimplifyCFGPass
66; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
67; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
68; CHECK-O-NEXT: Running pass: SROA
69; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
70; CHECK-O-NEXT: Running pass: EarlyCSEPass
71; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
72; CHECK-O-NEXT: Running pass: LowerExpectIntrinsicPass
73; CHECK-O3-NEXT: Running pass: CallSiteSplittingPass
74; CHECK-O-NEXT: Finished llvm::Function pass manager run.
75; CHECK-POSTLINK-O-NEXT: Running pass: LowerTypeTestsPass
76; CHECK-O-NEXT: Running pass: IPSCCPPass
77; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
78; CHECK-O-NEXT: Running pass: GlobalOptPass
79; CHECK-O-NEXT: Running pass: PromotePass
80; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
81; CHECK-O-NEXT: Starting llvm::Function pass manager run.
82; CHECK-O-NEXT: Running pass: InstCombinePass
83; CHECK-PRELINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
84; CHECK-O-NEXT: Running analysis: AAManager
85; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
86; CHECK-O-NEXT: Running pass: SimplifyCFGPass
87; CHECK-O-NEXT: Finished llvm::Function pass manager run.
88; CHECK-O-NEXT: Running pass: ModuleInlinerWrapperPass
89; CHECK-O-NEXT: Running analysis: InlineAdvisorAnalysis
90; CHECK-O-NEXT: Starting llvm::Module pass manager run.
91; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
92; CHECK-O-NEXT: Running analysis: GlobalsAA
93; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
94; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
95; CHECK-PRELINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
96; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
97; CHECK-O-NEXT: Running analysis: LazyCallGraphAnalysis
98; CHECK-O-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
99; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
100; CHECK-O-NEXT: Running pass: DevirtSCCRepeatedPass
101; CHECK-O-NEXT: Starting CGSCC pass manager run.
102; CHECK-O-NEXT: Running pass: InlinerPass
103; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
104; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
105; CHECK-O2-NEXT: Running pass: OpenMPOptPass on (foo)
106; CHECK-O3-NEXT: Running pass: OpenMPOptPass on (foo)
107; CHECK-O-NEXT: Starting llvm::Function pass manager run.
108; CHECK-O-NEXT: Running pass: SROA
109; CHECK-O-NEXT: Running pass: EarlyCSEPass
110; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
111; CHECK-O23SZ-NEXT: Running pass: SpeculativeExecutionPass
112; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
113; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
114; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
115; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
116; CHECK-O-NEXT: Running pass: SimplifyCFGPass
117; CHECK-O3-NEXT: Running pass: AggressiveInstCombinePass
118; CHECK-O-NEXT: Running pass: InstCombinePass
119; CHECK-O1-NEXT: Running pass: LibCallsShrinkWrapPass
120; CHECK-O2-NEXT: Running pass: LibCallsShrinkWrapPass
121; CHECK-O3-NEXT: Running pass: LibCallsShrinkWrapPass
122; CHECK-O23SZ-NEXT: Running pass: TailCallElimPass
123; CHECK-O-NEXT: Running pass: SimplifyCFGPass
124; CHECK-O-NEXT: Running pass: ReassociatePass
125; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}OptimizationRemarkEmitterAnalysis
126; CHECK-O-NEXT: Starting llvm::Function pass manager run
127; CHECK-O-NEXT: Running pass: LoopSimplifyPass
128; CHECK-O-NEXT: Running analysis: LoopAnalysis
129; CHECK-O-NEXT: Running pass: LCSSAPass
130; CHECK-O-NEXT: Finished llvm::Function pass manager run
131; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
132; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
133; CHECK-O-NEXT: Starting Loop pass manager run.
134; CHECK-O-NEXT: Running pass: LoopInstSimplifyPass
135; CHECK-O-NEXT: Running pass: LoopSimplifyCFGPass
136; CHECK-O-NEXT: Running pass: LoopRotatePass
137; CHECK-O-NEXT: Running pass: LICM
138; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
139; CHECK-O-NEXT: Finished Loop pass manager run.
140; CHECK-O-NEXT: Running pass: SimplifyCFGPass
141; CHECK-O-NEXT: Running pass: InstCombinePass
142; CHECK-O-NEXT: Starting llvm::Function pass manager run
143; CHECK-O-NEXT: Running pass: LoopSimplifyPass
144; CHECK-O-NEXT: Running pass: LCSSAPass
145; CHECK-O-NEXT: Finished llvm::Function pass manager run
146; CHECK-O-NEXT: Starting Loop pass manager run.
147; CHECK-O-NEXT: Running pass: IndVarSimplifyPass
148; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
149; CHECK-O-NEXT: Running pass: LoopDeletionPass
150; CHECK-O-NEXT: Running pass: LoopFullUnrollPass
151; CHECK-O-NEXT: Finished Loop pass manager run.
152; CHECK-O-NEXT: Running pass: SROA on foo
153; CHECK-Os-NEXT: Running pass: MergedLoadStoreMotionPass
154; CHECK-Os-NEXT: Running pass: GVN
155; CHECK-Os-NEXT: Running analysis: MemoryDependenceAnalysis
156; CHECK-Os-NEXT: Running analysis: PhiValuesAnalysis
157; CHECK-Oz-NEXT: Running pass: MergedLoadStoreMotionPass
158; CHECK-Oz-NEXT: Running pass: GVN
159; CHECK-Oz-NEXT: Running analysis: MemoryDependenceAnalysis
160; CHECK-Oz-NEXT: Running analysis: PhiValuesAnalysis
161; CHECK-O2-NEXT: Running pass: MergedLoadStoreMotionPass
162; CHECK-O2-NEXT: Running pass: GVN
163; CHECK-O2-NEXT: Running analysis: MemoryDependenceAnalysis
164; CHECK-O2-NEXT: Running analysis: PhiValuesAnalysis
165; CHECK-O3-NEXT: Running pass: MergedLoadStoreMotionPass
166; CHECK-O3-NEXT: Running pass: GVN
167; CHECK-O3-NEXT: Running analysis: MemoryDependenceAnalysis
168; CHECK-O3-NEXT: Running analysis: PhiValuesAnalysis
169; CHECK-O-NEXT: Running pass: MemCpyOptPass
170; CHECK-O1-NEXT: Running analysis: MemoryDependenceAnalysis
171; CHECK-O1-NEXT: Running analysis: PhiValuesAnalysis
172; CHECK-O-NEXT: Running pass: SCCPPass
173; CHECK-O-NEXT: Running pass: BDCEPass
174; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
175; CHECK-O-NEXT: Running pass: InstCombinePass
176; CHECK-O23SZ-NEXT: Running pass: JumpThreadingPass
177; CHECK-O23SZ-NEXT: Running analysis: LazyValueAnalysis
178; CHECK-O23SZ-NEXT: Running pass: CorrelatedValuePropagationPass
179; CHECK-O23SZ-NEXT: Invalidating analysis: LazyValueAnalysis
180; CHECK-O23SZ-NEXT: Running pass: DSEPass
181; CHECK-O23SZ-NEXT: Running analysis: PostDominatorTreeAnalysis on foo
182; CHECK-O23SZ-NEXT: Starting llvm::Function pass manager run
183; CHECK-O23SZ-NEXT: Running pass: LoopSimplifyPass
184; CHECK-O23SZ-NEXT: Running pass: LCSSAPass
185; CHECK-O23SZ-NEXT: Finished llvm::Function pass manager run
186; CHECK-O23SZ-NEXT: Running pass: LICMPass on Loop at depth 1 containing: %loop
187; CHECK-O-NEXT: Running pass: ADCEPass
188; CHECK-O1-NEXT: Running analysis: PostDominatorTreeAnalysis
189; CHECK-O-NEXT: Running pass: SimplifyCFGPass
190; CHECK-O-NEXT: Running pass: InstCombinePass
191; CHECK-O-NEXT: Finished llvm::Function pass manager run.
192; CHECK-O-NEXT: Finished CGSCC pass manager run.
193; CHECK-O-NEXT: Finished llvm::Module pass manager run.
194; CHECK-O-NEXT: Finished llvm::Module pass manager run.
195; CHECK-PRELINK-O-NEXT: Running pass: GlobalOptPass
196; CHECK-POSTLINK-O-NEXT: Starting llvm::Module pass manager run.
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-POSTLINK-O-NEXT: Finished llvm::Module pass manager run.
245; CHECK-O-NEXT: Finished llvm::Module pass manager run.
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