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