1 ; RUN: opt < %s -add-discriminators -S | FileCheck %s 2 3 ; Basic DWARF discriminator test. All the instructions in block 4 ; 'if.then' should have a different discriminator value than 5 ; the conditional branch at the end of block 'entry'. 6 ; 7 ; Original code: 8 ; 9 ; void foo(int i) { 10 ; int x; 11 ; if (i < 10) x = i; 12 ; } 13 14 define void @foo(i32 %i) #0 !dbg !4 { 15 entry: 16 %i.addr = alloca i32, align 4 17 %x = alloca i32, align 4 18 store i32 %i, i32* %i.addr, align 4 19 %0 = load i32, i32* %i.addr, align 4, !dbg !10 20 %cmp = icmp slt i32 %0, 10, !dbg !10 21 br i1 %cmp, label %if.then, label %if.end, !dbg !10 22 23 if.then: ; preds = %entry 24 %1 = load i32, i32* %i.addr, align 4, !dbg !10 25 ; CHECK: %1 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]] 26 27 store i32 %1, i32* %x, align 4, !dbg !10 28 ; CHECK: store i32 %1, i32* %x, align 4, !dbg ![[THEN]] 29 30 br label %if.end, !dbg !10 31 ; CHECK: br label %if.end, !dbg ![[THEN]] 32 33 if.end: ; preds = %if.then, %entry 34 ret void, !dbg !12 35 ; CHECK: ret void, !dbg ![[END:[0-9]+]] 36 } 37 38 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" } 39 40 ; We should be able to add discriminators even in the absence of llvm.dbg.cu. 41 ; When using sample profiles, the front end will generate line tables but it 42 ; does not generate llvm.dbg.cu to prevent codegen from emitting debug info 43 ; to the final binary. 44 ; !llvm.dbg.cu = !{!0} 45 !llvm.module.flags = !{!7, !8} 46 !llvm.ident = !{!9} 47 48 !0 = distinct !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) 49 !1 = !DIFile(filename: "basic.c", directory: ".") 50 !2 = !{} 51 !3 = !{!4} 52 !4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 53 !5 = !DIFile(filename: "basic.c", directory: ".") 54 !6 = !DISubroutineType(types: !2) 55 !7 = !{i32 2, !"Dwarf Version", i32 4} 56 !8 = !{i32 1, !"Debug Info Version", i32 3} 57 !9 = !{!"clang version 3.5 "} 58 !10 = !DILocation(line: 3, scope: !11) 59 !11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4) 60 !12 = !DILocation(line: 4, scope: !4) 61 62 ; CHECK: ![[FOO:[0-9]+]] = distinct !DISubprogram(name: "foo" 63 ; CHECK: ![[BLOCK:[0-9]+]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 3) 64 ; CHECK: ![[THEN]] = !DILocation(line: 3, scope: ![[BLOCKFILE:[0-9]+]]) 65 ; CHECK: ![[BLOCKFILE]] = !DILexicalBlockFile(scope: ![[BLOCK]],{{.*}} discriminator: 1) 66 ; CHECK: ![[END]] = !DILocation(line: 4, scope: ![[FOO]]) 67
