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