1; RUN: opt -passes=jump-threading -S < %s | FileCheck %s 2; RUN: opt -passes=jump-threading -S < %s --try-experimental-debuginfo-iterators | FileCheck %s 3 4define dso_local i32 @_Z3fooi(i32 %a) !dbg !7 { 5entry: 6 call void @llvm.dbg.value(metadata i32 %a, metadata !12, metadata !DIExpression()), !dbg !13 7 call void @llvm.dbg.value(metadata i32 1, metadata !14, metadata !DIExpression()), !dbg !13 8 %tobool = icmp ne i32 %a, 0, !dbg !15 9 br i1 %tobool, label %if.then, label %if.end, !dbg !17 10 11if.then: ; preds = %entry 12 call void @_Z4callv(), !dbg !18 13 call void @llvm.dbg.value(metadata i32 0, metadata !14, metadata !DIExpression()), !dbg !13 14 br label %if.end, !dbg !20 15 16if.end: ; preds = %if.then, %entry 17 %c.0 = phi i32 [ 0, %if.then ], [ 1, %entry ], !dbg !13 18 call void @llvm.dbg.value(metadata i32 %c.0, metadata !14, metadata !DIExpression()), !dbg !13 19 %tobool1 = icmp ne i32 %c.0, 0, !dbg !21 20 br i1 %tobool1, label %if.else, label %if.then2, !dbg !23 21 22; CHECK-LABEL: if.then2: 23; CHECK: #dbg_value({{.+}}, ![[B:[0-9]+]], !DIExpression(), 24; CHECK: #dbg_value({{.+}}, ![[B:[0-9]+]], !DIExpression(), 25; CHECK-NOT: #dbg_value({{.+}}, ![[B]], !DIExpression(), 26if.then2: ; preds = %if.end 27 call void @llvm.dbg.value(metadata i32 4, metadata !24, metadata !DIExpression()), !dbg !13 28 br label %if.end3, !dbg !25 29 30; CHECK-LABEL: if.end3: 31if.else: ; preds = %if.end 32 call void @llvm.dbg.value(metadata i32 6, metadata !24, metadata !DIExpression()), !dbg !13 33 br label %if.end3 34 35if.end3: ; preds = %if.else, %if.then2 36 %b.0 = phi i32 [ 6, %if.else ], [ 4, %if.then2 ], !dbg !27 37 call void @llvm.dbg.value(metadata i32 %b.0, metadata !24, metadata !DIExpression()), !dbg !13 38 ret i32 %b.0, !dbg !28 39} 40; Function Attrs: nounwind readnone speculatable willreturn 41declare void @llvm.dbg.declare(metadata, metadata, metadata) 42declare dso_local void @_Z4callv() 43; Function Attrs: nounwind readnone speculatable willreturn 44declare void @llvm.dbg.value(metadata, metadata, metadata) 45 46!llvm.dbg.cu = !{!0} 47!llvm.module.flags = !{!3, !4, !5} 48!llvm.ident = !{!6} 49 50; CHECK: ![[B]] = !DILocalVariable(name: "b" 51!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 10.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) 52!1 = !DIFile(filename: "test.cpp", directory: "/") 53!2 = !{} 54!3 = !{i32 7, !"Dwarf Version", i32 4} 55!4 = !{i32 2, !"Debug Info Version", i32 3} 56!5 = !{i32 1, !"wchar_size", i32 4} 57!6 = !{!"clang version 10.0.0"} 58!7 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooi", scope: !8, file: !8, line: 3, type: !9, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2) 59!8 = !DIFile(filename: "./test.cpp", directory: "/") 60!9 = !DISubroutineType(types: !10) 61!10 = !{!11, !11} 62!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 63!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !8, line: 3, type: !11) 64!13 = !DILocation(line: 0, scope: !7) 65!14 = !DILocalVariable(name: "c", scope: !7, file: !8, line: 4, type: !11) 66!15 = !DILocation(line: 5, column: 7, scope: !16) 67!16 = distinct !DILexicalBlock(scope: !7, file: !8, line: 5, column: 7) 68!17 = !DILocation(line: 5, column: 7, scope: !7) 69!18 = !DILocation(line: 6, column: 5, scope: !19) 70!19 = distinct !DILexicalBlock(scope: !16, file: !8, line: 5, column: 10) 71!20 = !DILocation(line: 8, column: 3, scope: !19) 72!21 = !DILocation(line: 9, column: 8, scope: !22) 73!22 = distinct !DILexicalBlock(scope: !7, file: !8, line: 9, column: 7) 74!23 = !DILocation(line: 9, column: 7, scope: !7) 75!24 = !DILocalVariable(name: "b", scope: !7, file: !8, line: 4, type: !11) 76!25 = !DILocation(line: 11, column: 3, scope: !26) 77!26 = distinct !DILexicalBlock(scope: !22, file: !8, line: 9, column: 11) 78!27 = !DILocation(line: 0, scope: !22) 79!28 = !DILocation(line: 14, column: 3, scope: !7) 80