1 ; RUN: opt < %s -add-discriminators -S | FileCheck %s 2 ; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s 3 4 ; Test that the only instructions that receive a new discriminator in 5 ; the block 'if.then' are those that share the same line number as 6 ; the branch in 'entry'. 7 ; 8 ; Original code: 9 ; 10 ; void foo(int i) { 11 ; int x, y; 12 ; if (i < 10) { x = i; 13 ; y = -i; 14 ; } 15 ; } 16 17 define void @foo(i32 %i) #0 !dbg !4 { 18 entry: 19 %i.addr = alloca i32, align 4 20 %x = alloca i32, align 4 21 %y = alloca i32, align 4 22 store i32 %i, i32* %i.addr, align 4 23 %0 = load i32, i32* %i.addr, align 4, !dbg !10 24 %cmp = icmp slt i32 %0, 10, !dbg !10 25 br i1 %cmp, label %if.then, label %if.end, !dbg !10 26 27 if.then: ; preds = %entry 28 %1 = load i32, i32* %i.addr, align 4, !dbg !12 29 store i32 %1, i32* %x, align 4, !dbg !12 30 31 %2 = load i32, i32* %i.addr, align 4, !dbg !14 32 ; CHECK: %2 = load i32, i32* %i.addr, align 4, !dbg ![[THEN:[0-9]+]] 33 34 %sub = sub nsw i32 0, %2, !dbg !14 35 ; CHECK: %sub = sub nsw i32 0, %2, !dbg ![[THEN]] 36 37 store i32 %sub, i32* %y, align 4, !dbg !14 38 ; CHECK: store i32 %sub, i32* %y, align 4, !dbg ![[THEN]] 39 40 br label %if.end, !dbg !15 41 ; CHECK: br label %if.end, !dbg ![[BR:[0-9]+]] 42 43 if.end: ; preds = %if.then, %entry 44 ret void, !dbg !16 45 ; CHECK: ret void, !dbg ![[END:[0-9]+]] 46 } 47 48 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" } 49 50 !llvm.dbg.cu = !{!0} 51 !llvm.module.flags = !{!7, !8} 52 !llvm.ident = !{!9} 53 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: "first-only.c", directory: ".") 56 !2 = !{} 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, variables: !2) 58 !5 = !DIFile(filename: "first-only.c", directory: ".") 59 !6 = !DISubroutineType(types: !{null}) 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 = !DILocation(line: 3, scope: !11) 64 65 !11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4) 66 ; CHECK: ![[FOO:[0-9]+]] = distinct !DISubprogram(name: "foo" 67 ; CHECK: ![[BLOCK1:[0-9]+]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 3) 68 69 !12 = !DILocation(line: 3, scope: !13) 70 71 !13 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !11) 72 ; CHECK: !DILexicalBlockFile(scope: ![[BLOCK2:[0-9]+]],{{.*}} discriminator: 1) 73 74 !14 = !DILocation(line: 4, scope: !13) 75 ; CHECK: ![[BLOCK2]] = distinct !DILexicalBlock(scope: ![[BLOCK1]],{{.*}} line: 3) 76 77 !15 = !DILocation(line: 5, scope: !13) 78 ; CHECK: ![[THEN]] = !DILocation(line: 4, scope: ![[BLOCK2]]) 79 80 !16 = !DILocation(line: 6, scope: !4) 81 ; CHECK: ![[BR]] = !DILocation(line: 5, scope: ![[BLOCK2]]) 82 ; CHECK: ![[END]] = !DILocation(line: 6, scope: ![[FOO]]) 83 84
