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1; RUN: opt < %s -add-discriminators -S | FileCheck %s
2; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s
3
4; Discriminator support for multiple CFG paths on the same line.
5;
6;       void foo(int i) {
7;         int x;
8;         if (i < 10) x = i; else x = -i;
9;       }
10;
11; The two stores inside the if-then-else line must have different discriminator
12; values.
13
14define void @foo(i32 %i) #0 !dbg !4 {
15entry:
16  %i.addr = alloca i32, align 4
17  %x = alloca i32, align 4
18  store i32 %i, i32* %i.addr, align 4
19  %0 = load i32, i32* %i.addr, align 4, !dbg !10
20  %cmp = icmp slt i32 %0, 10, !dbg !10
21  br i1 %cmp, label %if.then, label %if.else, !dbg !10
22
23if.then:                                          ; preds = %entry
24  %1 = load i32, i32* %i.addr, align 4, !dbg !10
25; CHECK:  %1 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]]
26
27  store i32 %1, i32* %x, align 4, !dbg !10
28; CHECK:  store i32 %1, i32* %x, align 4, !dbg ![[THEN]]
29
30  br label %if.end, !dbg !10
31; CHECK:  br label %if.end, !dbg ![[THEN]]
32
33if.else:                                          ; preds = %entry
34  %2 = load i32, i32* %i.addr, align 4, !dbg !10
35; CHECK:  %2 = load i32, i32* %i.addr, align 4, !dbg ![[ELSE:[0-9]+]]
36
37  %sub = sub nsw i32 0, %2, !dbg !10
38; CHECK:  %sub = sub nsw i32 0, %2, !dbg ![[ELSE]]
39
40  store i32 %sub, i32* %x, align 4, !dbg !10
41; CHECK:  store i32 %sub, i32* %x, align 4, !dbg ![[ELSE]]
42
43  br label %if.end
44
45if.end:                                           ; preds = %if.else, %if.then
46  ret void, !dbg !12
47}
48
49attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
50
51!llvm.dbg.cu = !{!0}
52!llvm.module.flags = !{!7, !8}
53!llvm.ident = !{!9}
54
55!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 (trunk 199750) (llvm/trunk 199751)", isOptimized: false, emissionKind: NoDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
56!1 = !DIFile(filename: "multiple.c", directory: ".")
57!2 = !{}
58!4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
59!5 = !DIFile(filename: "multiple.c", directory: ".")
60!6 = !DISubroutineType(types: !{null, !13})
61!13 = !DIBasicType(encoding: DW_ATE_signed, name: "int", size: 32, align: 32)
62!7 = !{i32 2, !"Dwarf Version", i32 4}
63!8 = !{i32 1, !"Debug Info Version", i32 3}
64!9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
65!10 = !DILocation(line: 3, scope: !11)
66!11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4)
67!12 = !DILocation(line: 4, scope: !4)
68
69; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[THENBLOCK:[0-9]+]])
70; CHECK: ![[THENBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE:[0-9]+]],{{.*}} discriminator: 2)
71; CHECK: ![[ELSE]] = !DILocation(line: 3, scope: ![[ELSEBLOCK:[0-9]+]])
72; CHECK: ![[ELSEBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE]],{{.*}} discriminator: 4)
73