1 ; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s
3 ; Discriminator support for multiple CFG paths on the same line.
7 ; if (i < 10) x = i; else x = -i;
10 ; The two stores inside the if-then-else line must have different discriminator
13 define void @foo(i32 %i) #0 !dbg !4 {
15 %i.addr = alloca i32, align 4
16 %x = alloca i32, align 4
17 store i32 %i, ptr %i.addr, align 4
18 %0 = load i32, ptr %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
22 if.then: ; preds = %entry
23 %1 = load i32, ptr %i.addr, align 4, !dbg !10
24 ; CHECK: %1 = load i32, ptr %i.addr, align 4, !dbg ![[THEN:[0-9]+]]
26 store i32 %1, ptr %x, align 4, !dbg !10
27 ; CHECK: store i32 %1, ptr %x, align 4, !dbg ![[THEN]]
29 br label %if.end, !dbg !10
30 ; CHECK: br label %if.end, !dbg ![[THEN]]
32 if.else: ; preds = %entry
33 %2 = load i32, ptr %i.addr, align 4, !dbg !10
34 ; CHECK: %2 = load i32, ptr %i.addr, align 4, !dbg ![[ELSE:[0-9]+]]
36 %sub = sub nsw i32 0, %2, !dbg !10
37 ; CHECK: %sub = sub nsw i32 0, %2, !dbg ![[ELSE]]
39 store i32 %sub, ptr %x, align 4, !dbg !10
40 ; CHECK: store i32 %sub, ptr %x, align 4, !dbg ![[ELSE]]
44 if.end: ; preds = %if.else, %if.then
48 attributes #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" }
51 !llvm.module.flags = !{!7, !8}
54 !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)
55 !1 = !DIFile(filename: "multiple.c", directory: ".")
57 !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)
58 !5 = !DIFile(filename: "multiple.c", directory: ".")
59 !6 = !DISubroutineType(types: !{null, !13})
60 !13 = !DIBasicType(encoding: DW_ATE_signed, name: "int", size: 32, align: 32)
61 !7 = !{i32 2, !"Dwarf Version", i32 4}
62 !8 = !{i32 1, !"Debug Info Version", i32 3}
63 !9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
64 !10 = !DILocation(line: 3, scope: !11)
65 !11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4)
66 !12 = !DILocation(line: 4, scope: !4)
68 ; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[THENBLOCK:[0-9]+]])
69 ; CHECK: ![[THENBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE:[0-9]+]],{{.*}} discriminator: 2)
70 ; CHECK: ![[ELSE]] = !DILocation(line: 3, scope: ![[ELSEBLOCK:[0-9]+]])
71 ; CHECK: ![[ELSEBLOCK]] = !DILexicalBlockFile(scope: ![[SCOPE]],{{.*}} discriminator: 4)