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1; RUN: opt < %s -passes=add-discriminators -S | FileCheck %s2 3; Test that the only instructions that receive a new discriminator in4; the block 'if.then' are those that share the same line number as5; the branch in 'entry'.6;7; Original code:8;9; void foo(int i) {10; int x, y;11; if (i < 10) { x = i;12; y = -i;13; }14; }15 16define void @foo(i32 %i) !dbg !4 {17entry:18 %i.addr = alloca i32, align 419 %x = alloca i32, align 420 %y = alloca i32, align 421 store i32 %i, ptr %i.addr, align 422 %0 = load i32, ptr %i.addr, align 4, !dbg !1023 %cmp = icmp slt i32 %0, 10, !dbg !1024 br i1 %cmp, label %if.then, label %if.end, !dbg !1025 26if.then: ; preds = %entry27 %1 = load i32, ptr %i.addr, align 4, !dbg !1228 store i32 %1, ptr %x, align 4, !dbg !1229 30 %2 = load i32, ptr %i.addr, align 4, !dbg !1431; CHECK: %2 = load i32, ptr %i.addr, align 4, !dbg ![[THEN:[0-9]+]]32 33 %sub = sub nsw i32 0, %2, !dbg !1434; CHECK: %sub = sub nsw i32 0, %2, !dbg ![[THEN]]35 36 store i32 %sub, ptr %y, align 4, !dbg !1437; CHECK: store i32 %sub, ptr %y, align 4, !dbg ![[THEN]]38 39 br label %if.end, !dbg !1540; CHECK: br label %if.end, !dbg ![[BR:[0-9]+]]41 42if.end: ; preds = %if.then, %entry43 ret void, !dbg !1644; CHECK: ret void, !dbg ![[END:[0-9]+]]45}46 47!llvm.dbg.cu = !{!0}48!llvm.module.flags = !{!7, !8}49!llvm.ident = !{!9}50 51!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)52!1 = !DIFile(filename: "first-only.c", directory: ".")53!2 = !{}54!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, retainedNodes: !2)55!5 = !DIFile(filename: "first-only.c", directory: ".")56!6 = !DISubroutineType(types: !{null})57!7 = !{i32 2, !"Dwarf Version", i32 4}58!8 = !{i32 1, !"Debug Info Version", i32 3}59!9 = !{!"clang version 3.5 (trunk 199750) (llvm/trunk 199751)"}60!10 = !DILocation(line: 3, scope: !11)61 62!11 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !4)63; CHECK: ![[FOO:[0-9]+]] = distinct !DISubprogram(name: "foo"64; CHECK: ![[BLOCK1:[0-9]+]] = distinct !DILexicalBlock(scope: ![[FOO]],{{.*}} line: 3)65 66!12 = !DILocation(line: 3, scope: !13)67 68!13 = distinct !DILexicalBlock(line: 3, column: 0, file: !1, scope: !11)69; CHECK: !DILexicalBlockFile(scope: ![[BLOCK2:[0-9]+]],{{.*}} discriminator: 2)70 71!14 = !DILocation(line: 4, scope: !13)72; CHECK: ![[BLOCK2]] = distinct !DILexicalBlock(scope: ![[BLOCK1]],{{.*}} line: 3)73 74!15 = !DILocation(line: 5, scope: !13)75; CHECK: ![[THEN]] = !DILocation(line: 4, scope: ![[BLOCK2]])76 77!16 = !DILocation(line: 6, scope: !4)78; CHECK: ![[BR]] = !DILocation(line: 5, scope: ![[BLOCK2]])79; CHECK: ![[END]] = !DILocation(line: 6, scope: ![[FOO]])80 81