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