xref: /llvm-project/llvm/test/Transforms/OpenMP/parallel_deletion_remarks.ll (revision aa8e9fac2a14bc7f0eb9aac20994d0c310d1ae92) 
1; RUN: opt -S -pass-remarks=openmp-opt -passes='attributor,cgscc(openmp-opt-cgscc)' -disable-output < %s 2>&1 | FileCheck %s
2; ModuleID = 'parallel_deletion_remarks.ll'
3source_filename = "parallel_deletion_remarks.c"
4target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
5target triple = "x86_64-pc-linux-gnu"
6
7%struct.ident_t = type { i32, i32, i32, i32, ptr }
8
9@.str = private unnamed_addr constant [23 x i8] c";unknown;unknown;0;0;;\00", align 1
10@0 = private unnamed_addr constant %struct.ident_t { i32 0, i32 2, i32 0, i32 0, ptr @.str }, align 8
11
12; void delete_parallel(void) {
13; #pragma omp parallel
14; 	{ unknown_willreturn(); }
15; #pragma omp parallel
16; 	{ readonly_willreturn(); }
17; #pragma omp parallel
18; 	{ readnone_willreturn(); }
19; #pragma omp parallel
20; 	{}
21; }
22;
23; This will delete all but the first parallel region
24
25; CHECK: remark: parallel_deletion_remarks.c:10:1: Removing parallel region with no side-effects.
26; CHECK: remark: parallel_deletion_remarks.c:12:1: Removing parallel region with no side-effects.
27; CHECK: remark: parallel_deletion_remarks.c:14:1: Removing parallel region with no side-effects.
28define dso_local void @delete_parallel() local_unnamed_addr !dbg !15 {
29  call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr nonnull @0, i32 0, ptr @.omp_outlined.), !dbg !18
30  call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr nonnull @0, i32 0, ptr @.omp_outlined..2), !dbg !19
31  call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr nonnull @0, i32 0, ptr @.omp_outlined..4), !dbg !20
32  call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr nonnull @0, i32 0, ptr @.omp_outlined..6), !dbg !21
33  ret void, !dbg !22
34}
35
36declare !callback !23 void @__kmpc_fork_call(ptr, i32, ptr, ...) local_unnamed_addr
37
38; Function Attrs: willreturn
39declare !dbg !4 void @unknown_willreturn(...) #0
40
41; Function Attrs: readonly willreturn
42declare !dbg !7 void @readonly_willreturn(...) #1
43
44; Function Attrs: readnone willreturn
45declare !dbg !8 void @readnone_willreturn(...) #2
46
47define internal void @.omp_outlined.(ptr noalias nocapture readnone %0, ptr noalias nocapture readnone %1) !dbg !25 {
48  call void (...) @unknown_willreturn(), !dbg !36
49  ret void, !dbg !36
50}
51
52define internal void @.omp_outlined..2(ptr noalias nocapture readnone %0, ptr noalias nocapture readnone %1) !dbg !37 {
53  call void (...) @readonly_willreturn(), !dbg !41
54  ret void, !dbg !41
55}
56
57define internal void @.omp_outlined..4(ptr noalias nocapture readnone %0, ptr noalias nocapture readnone %1) !dbg !42 {
58  call void (...) @readnone_willreturn(), !dbg !46
59  ret void, !dbg !46
60}
61
62define internal void @.omp_outlined..6(ptr noalias nocapture %0, ptr noalias nocapture %1) !dbg !47 {
63  ret void, !dbg !51
64}
65
66attributes #0 = { willreturn }
67attributes #1 = { readonly willreturn }
68attributes #2 = { readnone willreturn }
69
70!llvm.dbg.cu = !{!0}
71!llvm.module.flags = !{!9, !10, !11, !12, !13, !52}
72!llvm.ident = !{!14}
73
74!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None)
75!1 = !DIFile(filename: "parallel_deletion_remarks.c", directory: "/tmp")
76!2 = !{}
77!3 = !{!4, !7, !8}
78!4 = !DISubprogram(name: "unknown_willreturn", scope: !1, file: !1, line: 3, type: !5, spFlags: DISPFlagOptimized, retainedNodes: !2)
79!5 = !DISubroutineType(types: !6)
80!6 = !{null, null}
81!7 = !DISubprogram(name: "readonly_willreturn", scope: !1, file: !1, line: 4, type: !5, spFlags: DISPFlagOptimized, retainedNodes: !2)
82!8 = !DISubprogram(name: "readnone_willreturn", scope: !1, file: !1, line: 5, type: !5, spFlags: DISPFlagOptimized, retainedNodes: !2)
83!9 = !{i32 7, !"Dwarf Version", i32 4}
84!10 = !{i32 2, !"Debug Info Version", i32 3}
85!11 = !{i32 1, !"wchar_size", i32 4}
86!12 = !{i32 7, !"PIC Level", i32 2}
87!13 = !{i32 7, !"PIE Level", i32 2}
88!14 = !{!"clang version 10.0.0 "}
89!15 = distinct !DISubprogram(name: "delete_parallel", scope: !1, file: !1, line: 7, type: !16, scopeLine: 7, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
90!16 = !DISubroutineType(types: !17)
91!17 = !{null}
92!18 = !DILocation(line: 8, column: 1, scope: !15)
93!19 = !DILocation(line: 10, column: 1, scope: !15)
94!20 = !DILocation(line: 12, column: 1, scope: !15)
95!21 = !DILocation(line: 14, column: 1, scope: !15)
96!22 = !DILocation(line: 16, column: 1, scope: !15)
97!23 = !{!24}
98!24 = !{i64 2, i64 -1, i64 -1, i1 true}
99!25 = distinct !DISubprogram(name: ".omp_outlined.", scope: !1, file: !1, line: 9, type: !26, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !33)
100!26 = !DISubroutineType(types: !27)
101!27 = !{null, !28, !28}
102!28 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !29)
103!29 = !DIDerivedType(tag: DW_TAG_restrict_type, baseType: !30)
104!30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !31, size: 64)
105!31 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !32)
106!32 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
107!33 = !{!34, !35}
108!34 = !DILocalVariable(name: ".global_tid.", arg: 1, scope: !25, type: !28, flags: DIFlagArtificial)
109!35 = !DILocalVariable(name: ".bound_tid.", arg: 2, scope: !25, type: !28, flags: DIFlagArtificial)
110!36 = !DILocation(line: 9, column: 2, scope: !25)
111!37 = distinct !DISubprogram(name: ".omp_outlined..2", scope: !1, file: !1, line: 11, type: !26, scopeLine: 11, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !38)
112!38 = !{!39, !40}
113!39 = !DILocalVariable(name: ".global_tid.", arg: 1, scope: !37, type: !28, flags: DIFlagArtificial)
114!40 = !DILocalVariable(name: ".bound_tid.", arg: 2, scope: !37, type: !28, flags: DIFlagArtificial)
115!41 = !DILocation(line: 11, column: 2, scope: !37)
116!42 = distinct !DISubprogram(name: ".omp_outlined..4", scope: !1, file: !1, line: 13, type: !26, scopeLine: 13, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !43)
117!43 = !{!44, !45}
118!44 = !DILocalVariable(name: ".global_tid.", arg: 1, scope: !42, type: !28, flags: DIFlagArtificial)
119!45 = !DILocalVariable(name: ".bound_tid.", arg: 2, scope: !42, type: !28, flags: DIFlagArtificial)
120!46 = !DILocation(line: 13, column: 2, scope: !42)
121!47 = distinct !DISubprogram(name: ".omp_outlined..6", scope: !1, file: !1, line: 15, type: !26, scopeLine: 15, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !48)
122!48 = !{!49, !50}
123!49 = !DILocalVariable(name: ".global_tid.", arg: 1, scope: !47, type: !28, flags: DIFlagArtificial)
124!50 = !DILocalVariable(name: ".bound_tid.", arg: 2, scope: !47, type: !28, flags: DIFlagArtificial)
125!51 = !DILocation(line: 15, column: 2, scope: !47)
126!52 = !{i32 7, !"openmp", i32 50}
127