1; RUN: opt < %s -add-discriminators -S | FileCheck %s
2; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s
3
4; Discriminator support for code that is written in one line:
5; #1 int foo(int i) {
6; #2   if (i == 3 || i == 5) return 100; else return 99;
7; #3 }
8
9; i == 3:     discriminator 0
10; i == 5:     discriminator 1
11; return 100: discriminator 2
12; return 99:  discriminator 3
13
14define i32 @_Z3fooi(i32 %i) #0 !dbg !4 {
15  %1 = alloca i32, align 4
16  %2 = alloca i32, align 4
17  store i32 %i, i32* %2, align 4, !tbaa !13
18  call void @llvm.dbg.declare(metadata i32* %2, metadata !9, metadata !17), !dbg !18
19  %3 = load i32, i32* %2, align 4, !dbg !19, !tbaa !13
20  %4 = icmp eq i32 %3, 3, !dbg !21
21  br i1 %4, label %8, label %5, !dbg !22
22
23; <label>:5                                       ; preds = %0
24  %6 = load i32, i32* %2, align 4, !dbg !23, !tbaa !13
25; CHECK:  %6 = load i32, i32* %2, align 4, !dbg ![[THEN1:[0-9]+]],{{.*}}
26
27  %7 = icmp eq i32 %6, 5, !dbg !24
28; CHECK:  %7 = icmp eq i32 %6, 5, !dbg ![[THEN2:[0-9]+]]
29
30  br i1 %7, label %8, label %9, !dbg !25
31; CHECK:  br i1 %7, label %8, label %9, !dbg ![[THEN3:[0-9]+]]
32
33; <label>:8                                       ; preds = %5, %0
34  store i32 100, i32* %1, align 4, !dbg !26
35; CHECK: store i32 100, i32* %1, align 4, !dbg ![[ELSE:[0-9]+]]
36
37  br label %10, !dbg !26
38; CHECK: br label %10, !dbg ![[ELSE]]
39
40; <label>:9                                       ; preds = %5
41  store i32 99, i32* %1, align 4, !dbg !27
42; CHECK: store i32 99, i32* %1, align 4, !dbg ![[COMBINE:[0-9]+]]
43
44  br label %10, !dbg !27
45; CHECK: br label %10, !dbg ![[COMBINE]]
46
47; <label>:10                                      ; preds = %9, %8
48  %11 = load i32, i32* %1, align 4, !dbg !28
49  ret i32 %11, !dbg !28
50}
51
52; Function Attrs: nounwind readnone
53declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
54
55attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
56attributes #1 = { nounwind readnone }
57
58!llvm.dbg.cu = !{!0}
59!llvm.module.flags = !{!10, !11}
60!llvm.ident = !{!12}
61
62!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 250915)", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2)
63!1 = !DIFile(filename: "a.cc", directory: "/usr/local/google/home/dehao/discr")
64!2 = !{}
65!4 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8)
66!5 = !DISubroutineType(types: !6)
67!6 = !{!7, !7}
68!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
69!8 = !{!9}
70!9 = !DILocalVariable(name: "i", arg: 1, scope: !4, file: !1, line: 1, type: !7)
71!10 = !{i32 2, !"Dwarf Version", i32 4}
72!11 = !{i32 2, !"Debug Info Version", i32 3}
73!12 = !{!"clang version 3.8.0 (trunk 250915)"}
74!13 = !{!14, !14, i64 0}
75!14 = !{!"int", !15, i64 0}
76!15 = !{!"omnipotent char", !16, i64 0}
77!16 = !{!"Simple C/C++ TBAA"}
78!17 = !DIExpression()
79!18 = !DILocation(line: 1, column: 13, scope: !4)
80!19 = !DILocation(line: 2, column: 7, scope: !20)
81!20 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 7)
82!21 = !DILocation(line: 2, column: 9, scope: !20)
83!22 = !DILocation(line: 2, column: 14, scope: !20)
84!23 = !DILocation(line: 2, column: 17, scope: !20)
85!24 = !DILocation(line: 2, column: 19, scope: !20)
86!25 = !DILocation(line: 2, column: 7, scope: !4)
87!26 = !DILocation(line: 2, column: 25, scope: !20)
88!27 = !DILocation(line: 2, column: 42, scope: !20)
89!28 = !DILocation(line: 3, column: 1, scope: !4)
90
91; CHECK: ![[THEN1]] = !DILocation(line: 2, column: 17, scope: ![[THENBLOCK:[0-9]+]])
92; CHECK: ![[THENBLOCK]] = !DILexicalBlockFile({{.*}} discriminator: 1)
93; CHECK: ![[THEN2]] = !DILocation(line: 2, column: 19, scope: ![[THENBLOCK]])
94; CHECK: ![[THEN3]] = !DILocation(line: 2, column: 7, scope: ![[THENBLOCK]])
95; CHECK: ![[ELSE]] = !DILocation(line: 2, column: 25, scope: ![[ELSEBLOCK:[0-9]+]])
96; CHECK: ![[ELSEBLOCK]] = !DILexicalBlockFile({{.*}} discriminator: 2)
97; CHECK: ![[COMBINE]] = !DILocation(line: 2, column: 42, scope: ![[COMBINEBLOCK:[0-9]+]])
98; CHECK: ![[COMBINEBLOCK]] = !DILexicalBlockFile({{.*}} discriminator: 3)
99