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- ; RUN: opt < %s -add-discriminators -S | FileCheck %s
- ; Basic DWARF discriminator test. All the instructions in block
- ; 'if.then' should have a different discriminator value than
- ; the conditional branch at the end of block 'entry'.
- ;
- ; Original code:
- ;
- ; void foo(int i) {
- ; int x;
- ; if (i < 10) x = i;
- ; }
- define void @foo(i32 %i) #0 {
- entry:
- %i.addr = alloca i32, align 4
- %x = alloca i32, align 4
- store i32 %i, i32* %i.addr, align 4
- %0 = load i32, i32* %i.addr, align 4, !dbg !10
- %cmp = icmp slt i32 %0, 10, !dbg !10
- br i1 %cmp, label %if.then, label %if.end, !dbg !10
- if.then: ; preds = %entry
- %1 = load i32, i32* %i.addr, align 4, !dbg !10
- ; CHECK: %1 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]]
- store i32 %1, i32* %x, align 4, !dbg !10
- ; CHECK: store i32 %1, i32* %x, align 4, !dbg ![[THEN]]
- br label %if.end, !dbg !10
- ; CHECK: br label %if.end, !dbg ![[THEN]]
- if.end: ; preds = %if.then, %entry
- ret void, !dbg !12
- ; CHECK: ret void, !dbg ![[END:[0-9]+]]
- }
- 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" }
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!7, !8}
- !llvm.ident = !{!9}
- !0 = !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
- !1 = !DIFile(filename: "basic.c", directory: ".")
- !2 = !{}
- !3 = !{!4}
- !4 = !DISubprogram(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)
- !5 = !DIFile(filename: "basic.c", directory: ".")
- !6 = !DISubroutineType(types: !2)
- !7 = !{i32 2, !"Dwarf Version", i32 4}
- !8 = !{i32 1, !"Debug Info Version", i32 3}
- !9 = !{!"clang version 3.5 "}
- !10 = !DILocation(line: 3, scope: !11)
- !11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4)
- !12 = !DILocation(line: 4, scope: !4)
- ; CHECK: ![[FOO:[0-9]+]] = !DISubprogram(name: "foo"
- ; CHECK: ![[BLOCK:[0-9]+]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 3)
- ; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[BLOCKFILE:[0-9]+]])
- ; CHECK: ![[BLOCKFILE]] = !DILexicalBlockFile(scope: ![[BLOCK]],{{.*}} discriminator: 1)
- ; CHECK: ![[END]] = !DILocation(line: 4, scope: ![[FOO]])
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