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-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-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-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-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-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,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-POSTLINK-O,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-POSTLINK-O,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-POSTLINK-O,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-POSTLINK-O,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-POSTLINK-O,CHECK-POSTLINK-O2
49;
50; CHECK-O: Running analysis: PassInstrumentationAnalysis
51; CHECK-O-NEXT: Starting llvm::Module pass manager run.
52; CHECK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
53; CHECK-O-NEXT: 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 pass: ModuleToFunctionPassAdaptor<{{.*}}AddDiscriminatorsPass{{.*}}>
57; CHECK-DIS-NEXT: Running analysis: InnerAnalysisManagerProxy
58; CHECK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
59; CHECK-O-NEXT: Starting llvm::Module pass manager run.
60; CHECK-POSTLINK-O-NEXT: Running pass: PGOIndirectCallPromotion
61; CHECK-POSTLINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
62; CHECK-POSTLINK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
63; CHECK-POSTLINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
64; CHECK-POSTLINK-O-NEXT: Running analysis: PassInstrumentationAnalysis
65; CHECK-O-NEXT: Running pass: InferFunctionAttrsPass
66; CHECK-PRELINK-O-NODIS-NEXT: Running analysis: InnerAnalysisManagerProxy
67; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
68; CHECK-O-NEXT: Running analysis: PassInstrumentationAnalysis
69; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
70; CHECK-PRELINK-O-NEXT: Running analysis: PassInstrumentationAnalysis
71; CHECK-O-NEXT: Starting llvm::Function pass manager run.
72; CHECK-O-NEXT: Running pass: SimplifyCFGPass
73; CHECK-O-NEXT: Running analysis: TargetIRAnalysis
74; CHECK-O-NEXT: Running analysis: AssumptionAnalysis
75; CHECK-O-NEXT: Running pass: SROA
76; CHECK-O-NEXT: Running analysis: DominatorTreeAnalysis
77; CHECK-O-NEXT: Running pass: EarlyCSEPass
78; CHECK-O-NEXT: Running analysis: TargetLibraryAnalysis
79; CHECK-O-NEXT: Running pass: LowerExpectIntrinsicPass
80; CHECK-O3-NEXT: Running pass: CallSiteSplittingPass
81; CHECK-O-NEXT: Finished llvm::Function pass manager run.
82; CHECK-O-NEXT: Running pass: IPSCCPPass
83; CHECK-O-NEXT: Running pass: CalledValuePropagationPass
84; CHECK-O-NEXT: Running pass: GlobalOptPass
85; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PromotePass>
86; CHECK-O-NEXT: Running pass: DeadArgumentEliminationPass
87; CHECK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
88; CHECK-O-NEXT: Starting llvm::Function pass manager run.
89; CHECK-O-NEXT: Running pass: InstCombinePass
90; CHECK-PRELINK-O-NEXT: Running analysis: OptimizationRemarkEmitterAnalysis
91; CHECK-O-NEXT: Running analysis: AAManager
92; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
93; CHECK-O-NEXT: Running pass: SimplifyCFGPass
94; CHECK-O-NEXT: Finished llvm::Function pass manager run.
95; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
96; CHECK-O-NEXT: Running analysis: GlobalsAA
97; CHECK-O-NEXT: Running analysis: CallGraphAnalysis
98; CHECK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}ProfileSummaryAnalysis
99; CHECK-PRELINK-O-NEXT: Running analysis: ProfileSummaryAnalysis
100; CHECK-O-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor<{{.*}}LazyCallGraph{{.*}}>
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: PassInstrumentationAnalysis
105; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph::SCC{{.*}}>
106; CHECK-O-NEXT: Starting CGSCC pass manager run.
107; CHECK-O-NEXT: Running pass: InlinerPass
108; CHECK-O-NEXT: Running pass: PostOrderFunctionAttrsPass
109; CHECK-O3-NEXT: Running pass: ArgumentPromotionPass
110; CHECK-O-NEXT: Running pass: CGSCCToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
111; CHECK-O-NEXT: Starting llvm::Function pass manager run.
112; CHECK-O-NEXT: Running pass: SROA
113; CHECK-O-NEXT: Running pass: EarlyCSEPass
114; CHECK-O-NEXT: Running analysis: MemorySSAAnalysis
115; CHECK-O-NEXT: Running pass: SpeculativeExecutionPass
116; CHECK-O-NEXT: Running pass: JumpThreadingPass
117; CHECK-O-NEXT: Running analysis: LazyValueAnalysis
118; CHECK-O-NEXT: Running pass: CorrelatedValuePropagationPass
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-O-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: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopStandardAnalysisResults{{.*}}>
130; CHECK-O-NEXT: Starting llvm::Function pass manager run
131; CHECK-O-NEXT: Running pass: LoopSimplifyPass
132; CHECK-O-NEXT: Running analysis: LoopAnalysis
133; CHECK-O-NEXT: Running pass: LCSSAPass
134; CHECK-O-NEXT: Finished llvm::Function pass manager run
135; CHECK-O-NEXT: Running analysis: ScalarEvolutionAnalysis
136; CHECK-O-NEXT: Running analysis: InnerAnalysisManagerProxy
137; CHECK-O-NEXT: Starting Loop pass manager run.
138; CHECK-O-NEXT: Running analysis: PassInstrumentationAnalysis
139; CHECK-O-NEXT: Running pass: LoopInstSimplifyPass
140; CHECK-O-NEXT: Running pass: LoopSimplifyCFGPass
141; CHECK-O-NEXT: Running pass: LoopRotatePass
142; CHECK-O-NEXT: Running pass: LICM
143; CHECK-O-NEXT: Running analysis: OuterAnalysisManagerProxy
144; CHECK-O-NEXT: Running pass: SimpleLoopUnswitchPass
145; CHECK-O-NEXT: Finished Loop pass manager run.
146; CHECK-O-NEXT: Running pass: SimplifyCFGPass
147; CHECK-O-NEXT: Running pass: InstCombinePass
148; CHECK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopStandardAnalysisResults{{.*}}>
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: IndVarSimplifyPass
155; CHECK-O-NEXT: Running pass: LoopIdiomRecognizePass
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-O-NEXT: Running pass: MemCpyOptPass
177; CHECK-O1-NEXT: Running analysis: MemoryDependenceAnalysis
178; CHECK-O1-NEXT: Running analysis: PhiValuesAnalysis
179; CHECK-O-NEXT: Running pass: SCCPPass
180; CHECK-O-NEXT: Running pass: BDCEPass
181; CHECK-O-NEXT: Running analysis: DemandedBitsAnalysis
182; CHECK-O-NEXT: Running pass: InstCombinePass
183; CHECK-O-NEXT: Running pass: JumpThreadingPass
184; CHECK-O-NEXT: Running pass: CorrelatedValuePropagationPass
185; CHECK-O-NEXT: Running pass: DSEPass
186; CHECK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LICMPass{{.*}}>
187; CHECK-O-NEXT: Starting llvm::Function pass manager run
188; CHECK-O-NEXT: Running pass: LoopSimplifyPass
189; CHECK-O-NEXT: Running pass: LCSSAPass
190; CHECK-O-NEXT: Finished llvm::Function pass manager run
191; CHECK-O-NEXT: Running pass: ADCEPass
192; CHECK-O-NEXT: Running analysis: PostDominatorTreeAnalysis
193; CHECK-O-NEXT: Running pass: SimplifyCFGPass
194; CHECK-O-NEXT: Running pass: InstCombinePass
195; CHECK-O-NEXT: Finished llvm::Function pass manager run.
196; CHECK-O-NEXT: Finished CGSCC pass manager run.
197; CHECK-O-NEXT: Finished llvm::Module pass manager run.
198; CHECK-PRELINK-O-NEXT: Running pass: GlobalOptPass
199; CHECK-POSTLINK-O-NEXT: Running pass: PassManager<{{.*}}Module{{.*}}>
200; CHECK-POSTLINK-O-NEXT: Starting llvm::Module pass manager run.
201; CHECK-POSTLINK-O-NEXT: Running pass: GlobalOptPass
202; CHECK-POSTLINK-O-NEXT: Running pass: GlobalDCEPass
203; CHECK-POSTLINK-O-NEXT: Running pass: EliminateAvailableExternallyPass
204; CHECK-POSTLINK-O-NEXT: Running pass: ReversePostOrderFunctionAttrsPass
205; CHECK-POSTLINK-O-NEXT: Running pass: RequireAnalysisPass<{{.*}}GlobalsAA
206; CHECK-POSTLINK-O-NEXT: Running pass: ModuleToFunctionPassAdaptor<{{.*}}PassManager{{.*}}>
207; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run.
208; CHECK-POSTLINK-O-NEXT: Running pass: Float2IntPass
209; CHECK-POSTLINK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
210; CHECK-POSTLINK-O-NEXT: Running pass: FunctionToLoopPassAdaptor<{{.*}}LoopRotatePass
211; CHECK-POSTLINK-O-NEXT: Starting llvm::Function pass manager run
212; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
213; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
214; CHECK-POSTLINK-O-NEXT: Finished llvm::Function pass manager run
215; CHECK-POSTLINK-O-NEXT: Running pass: LoopDistributePass
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-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: Running pass: FunctionToLoopPassAdaptor<{{.*}}LICMPass
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: 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-POSTLINK-O-NEXT: Finished llvm::Module pass manager run.
244; CHECK-O-NEXT: Finished llvm::Module pass manager run.
245; CHECK-PRELINK-O-NEXT: Running pass: NameAnonGlobalPass
246; CHECK-O-NEXT: Running pass: PrintModulePass
247
248; Make sure we get the IR back out without changes when we print the module.
249; CHECK-O-LABEL: define void @foo(i32 %n) local_unnamed_addr {
250; CHECK-O-NEXT: entry:
251; CHECK-O-NEXT:   br label %loop
252; CHECK-O:      loop:
253; CHECK-O-NEXT:   %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
254; CHECK-O-NEXT:   %iv.next = add i32 %iv, 1
255; CHECK-O-NEXT:   tail call void @bar()
256; CHECK-O-NEXT:   %cmp = icmp eq i32 %iv, %n
257; CHECK-O-NEXT:   br i1 %cmp, label %exit, label %loop
258; CHECK-O:      exit:
259; CHECK-O-NEXT:   ret void
260; CHECK-O-NEXT: }
261;
262; CHECK-O-NEXT: Finished llvm::Module pass manager run.
263
264declare void @bar() local_unnamed_addr
265
266define void @foo(i32 %n) local_unnamed_addr {
267entry:
268  br label %loop
269loop:
270  %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
271  %iv.next = add i32 %iv, 1
272  tail call void @bar()
273  %cmp = icmp eq i32 %iv, %n
274  br i1 %cmp, label %exit, label %loop
275exit:
276  ret void
277}
278