1; RUN: opt < %s -add-discriminators -S | FileCheck %s 2; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s 3 4; Basic DWARF discriminator test. All the instructions in block 5; 'if.then' should have a different discriminator value than 6; the conditional branch at the end of block 'entry'. 7; 8; Original code: 9; 10; void foo(int i) { 11; int x; 12; if (i < 10) x = i; 13; } 14 15define void @foo(i32 %i) #0 !dbg !4 { 16entry: 17 %i.addr = alloca i32, align 4 18 %x = alloca i32, align 4 19 store i32 %i, i32* %i.addr, align 4 20 %0 = load i32, i32* %i.addr, align 4, !dbg !10 21 %cmp = icmp slt i32 %0, 10, !dbg !10 22 br i1 %cmp, label %if.then, label %if.end, !dbg !10 23 24if.then: ; preds = %entry 25 %1 = load i32, i32* %i.addr, align 4, !dbg !10 26; CHECK: %1 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]] 27 28 store i32 %1, i32* %x, align 4, !dbg !10 29; CHECK: store i32 %1, i32* %x, align 4, !dbg ![[THEN]] 30 31 br label %if.end, !dbg !10 32; CHECK: br label %if.end, !dbg ![[THEN]] 33 34if.end: ; preds = %if.then, %entry 35 ret void, !dbg !12 36; CHECK: ret void, !dbg ![[END:[0-9]+]] 37} 38 39attributes #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" } 40 41!llvm.dbg.cu = !{!0} 42!llvm.module.flags = !{!7, !8} 43!llvm.ident = !{!9} 44 45!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5 ", isOptimized: false, emissionKind: NoDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 46!1 = !DIFile(filename: "basic.c", directory: ".") 47!2 = !{} 48!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, variables: !2) 49!5 = !DIFile(filename: "basic.c", directory: ".") 50!6 = !DISubroutineType(types: !2) 51!7 = !{i32 2, !"Dwarf Version", i32 4} 52!8 = !{i32 1, !"Debug Info Version", i32 3} 53!9 = !{!"clang version 3.5 "} 54!10 = !DILocation(line: 3, scope: !11) 55!11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4) 56!12 = !DILocation(line: 4, scope: !4) 57 58; CHECK: ![[FOO:[0-9]+]] = distinct !DISubprogram(name: "foo" 59; CHECK: ![[BLOCK:[0-9]+]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 3) 60; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[BLOCKFILE:[0-9]+]]) 61; CHECK: ![[BLOCKFILE]] = !DILexicalBlockFile(scope: ![[BLOCK]],{{.*}} discriminator: 1) 62; CHECK: ![[END]] = !DILocation(line: 4, scope: ![[FOO]]) 63