1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -S -passes=redundant-dbg-inst-elim | FileCheck %s
4 ; All dbg.value with location "!dbg !19" are redundant in the input.
5 ; FIXME: We do not handle non-overlapping/overlapping fragments perfectly yet.
7 define dso_local i16 @main(i16 %a1, i16 %a2) local_unnamed_addr #0 !dbg !7 {
10 ; CHECK-NEXT: br label [[BB0:%.*]]
12 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !16
13 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 14, metadata !14, metadata !DIExpression()), !dbg !18
14 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !18
15 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 12, metadata !12, metadata !DIExpression()), !dbg !18
16 ; CHECK-NEXT: br label [[BB1:%.*]]
18 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1:%.*]], metadata !14, metadata !DIExpression()), !dbg !18
19 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 888, metadata !13, metadata !DIExpression()), !dbg !18
20 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A2:%.*]], metadata !12, metadata !DIExpression()), !dbg !18
21 ; CHECK-NEXT: [[T1:%.*]] = call i16 @bar(i16 0)
22 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[T1]], metadata !13, metadata !DIExpression()), !dbg !18
23 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A2]], metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !18
24 ; CHECK-NEXT: br label [[BB2:%.*]]
26 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !18
27 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !18
28 ; CHECK-NEXT: [[T2:%.*]] = call i16 @bar(i16 [[T1]])
29 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[T2]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !18
30 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
31 ; CHECK-NEXT: br label [[BB3:%.*]]
33 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
34 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[A1]], metadata !13, metadata !DIExpression()), !dbg !18
35 ; CHECK-NEXT: br label [[EXIT:%.*]]
37 ; CHECK-NEXT: ret i16 [[T2]]
43 call void @llvm.dbg.value(metadata i16 999, metadata !12, metadata !DIExpression()), !dbg !19
44 call void @llvm.dbg.value(metadata i16 996, metadata !13, metadata !DIExpression()), !dbg !19
45 call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !17
46 call void @llvm.dbg.value(metadata i16 998, metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !19
47 call void @llvm.dbg.value(metadata i16 14, metadata !14, metadata !DIExpression()), !dbg !16
48 call void @llvm.dbg.value(metadata i16 997, metadata !12, metadata !DIExpression()), !dbg !19
49 call void @llvm.dbg.value(metadata i16 13, metadata !13, metadata !DIExpression()), !dbg !16
50 call void @llvm.dbg.value(metadata i16 12, metadata !12, metadata !DIExpression()), !dbg !16
54 call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !16
55 call void @llvm.dbg.value(metadata i16 888, metadata !13, metadata !DIExpression()), !dbg !16
56 call void @llvm.dbg.value(metadata i16 %a2, metadata !12, metadata !DIExpression()), !dbg !16
57 %t1 = call i16 @bar(i16 0)
58 call void @llvm.dbg.value(metadata i16 %a1, metadata !14, metadata !DIExpression()), !dbg !19
59 call void @llvm.dbg.value(metadata i16 %t1, metadata !13, metadata !DIExpression()), !dbg !16
60 call void @llvm.dbg.value(metadata i16 %a2, metadata !12, metadata !DIExpression(DW_OP_constu, 2, DW_OP_shr, DW_OP_stack_value)), !dbg !16
64 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
65 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
66 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16
67 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !16
68 %t2 = call i16 @bar(i16 %t1)
69 call void @llvm.dbg.value(metadata i16 %t2, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !16
70 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 8, 8)), !dbg !19
74 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 8)), !dbg !19
75 call void @llvm.dbg.value(metadata i16 %a1, metadata !13, metadata !DIExpression()), !dbg !16
82 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
83 declare i16 @bar(i16) #2
85 attributes #0 = { noinline nounwind }
86 attributes #1 = { nounwind readnone speculatable willreturn }
87 attributes #2 = { noinline nounwind readnone }
90 !llvm.module.flags = !{!3, !4, !5}
93 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2, nameTableKind: None)
94 !1 = !DIFile(filename: "foo.c", directory: "")
96 !3 = !{i32 7, !"Dwarf Version", i32 4}
97 !4 = !{i32 2, !"Debug Info Version", i32 3}
98 !5 = !{i32 1, !"wchar_size", i32 1}
99 !6 = !{!"clang version 10.0.0"}
100 !7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 8, type: !8, scopeLine: 8, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
101 !8 = !DISubroutineType(types: !9)
103 !10 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
104 !11 = !{!12, !13, !14}
105 !12 = !DILocalVariable(name: "x", scope: !7, file: !1, line: 9, type: !10)
106 !13 = !DILocalVariable(name: "y", scope: !7, file: !1, line: 10, type: !10)
107 !14 = !DILocalVariable(name: "u", scope: !15, file: !1, line: 11, type: !10)
108 !15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 3)
109 !16 = !DILocation(line: 0, scope: !7)
110 !17 = !DILocation(line: 0, scope: !7, inlinedAt: !18)
111 !18 = !DILocation(line: 1, scope: !7)
112 !19 = !DILocation(line: 77, scope: !7)