1 ; RUN: opt < %s -add-discriminators -S | FileCheck %s
3 ; Test that the only instructions that receive a new discriminator in
4 ; the block 'if.then' are those that share the same line number as
5 ; the branch in 'entry'.
11 ; if (i < 10) { x = i;
16 define void @foo(i32 %i) #0 {
18 %i.addr = alloca i32, align 4
19 %x = alloca i32, align 4
20 %y = alloca i32, align 4
21 store i32 %i, i32* %i.addr, align 4
22 %0 = load i32, i32* %i.addr, align 4, !dbg !10
23 %cmp = icmp slt i32 %0, 10, !dbg !10
24 br i1 %cmp, label %if.then, label %if.end, !dbg !10
26 if.then: ; preds = %entry
27 %1 = load i32, i32* %i.addr, align 4, !dbg !12
28 store i32 %1, i32* %x, align 4, !dbg !12
30 %2 = load i32, i32* %i.addr, align 4, !dbg !14
31 ; CHECK: %2 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]]
33 %sub = sub nsw i32 0, %2, !dbg !14
34 ; CHECK: %sub = sub nsw i32 0, %2, !dbg ![[THEN]]
36 store i32 %sub, i32* %y, align 4, !dbg !14
37 ; CHECK: store i32 %sub, i32* %y, align 4, !dbg ![[THEN]]
39 br label %if.end, !dbg !15
40 ; CHECK: br label %if.end, !dbg ![[BR:[0-9]+]]
42 if.end: ; preds = %if.then, %entry
44 ; CHECK: ret void, !dbg ![[END:[0-9]+]]
47 attributes #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" }
50 !llvm.module.flags = !{!7, !8}
53 !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)
54 !1 = !MDFile(filename: "first-only.c", directory: ".")
57 !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)
58 !5 = !MDFile(filename: "first-only.c", directory: ".")
59 !6 = !MDSubroutineType(types: !2)
60 !7 = !{i32 2, !"Dwarf Version", i32 4}
61 !8 = !{i32 1, !"Debug Info Version", i32 3}
62 !9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}
63 !10 = !MDLocation(line: 3, scope: !11)
65 !11 = distinct !MDLexicalBlock(line: 3, column: 0, file: !1, scope: !4)
66 ; CHECK: ![[FOO:[0-9]+]] = !MDSubprogram(name: "foo"
67 ; CHECK: ![[BLOCK1:[0-9]+]] = distinct !MDLexicalBlock(scope: ![[FOO]],{{.*}} line: 3)
69 !12 = !MDLocation(line: 3, scope: !13)
71 !13 = distinct !MDLexicalBlock(line: 3, column: 0, file: !1, scope: !11)
72 ; CHECK: !MDLexicalBlockFile(scope: ![[BLOCK2:[0-9]+]],{{.*}} discriminator: 1)
74 !14 = !MDLocation(line: 4, scope: !13)
75 ; CHECK: ![[BLOCK2]] = distinct !MDLexicalBlock(scope: ![[BLOCK1]],{{.*}} line: 3)
77 !15 = !MDLocation(line: 5, scope: !13)
78 ; CHECK: ![[THEN]] = !MDLocation(line: 4, scope: ![[BLOCK2]])
80 !16 = !MDLocation(line: 6, scope: !4)
81 ; CHECK: ![[BR]] = !MDLocation(line: 5, scope: ![[BLOCK2]])
82 ; CHECK: ![[END]] = !MDLocation(line: 6, scope: ![[FOO]])