1 ; RUN: opt -lcssa -S %s | FileCheck %s 2 source_filename = "small.c" 3 4 @a = common dso_local global i32 0, align 4, !dbg !0 5 6 ; CHECK-LABEL: @f 7 define dso_local void @f() !dbg !10 { 8 entry: 9 %0 = load i32, i32* @a, align 4, !dbg !17 10 %tobool1 = icmp eq i32 %0, 0, !dbg !18 11 br i1 %tobool1, label %for.end, label %for.inc.lr.ph, !dbg !18 12 13 for.inc.lr.ph: ; preds = %entry 14 br label %for.inc, !dbg !18 15 16 for.inc: ; preds = %for.inc, %for.inc.lr.ph 17 %1 = phi i32 [ %0, %for.inc.lr.ph ], [ %inc, %for.inc ] 18 call void @llvm.dbg.label(metadata !14), !dbg !19 19 %inc = add nsw i32 %1, 1, !dbg !20 20 %tobool = icmp eq i32 %inc, 0, !dbg !18 21 br i1 %tobool, label %for.cond.for.end_crit_edge, label %for.inc, !dbg !18, !llvm.loop !21 22 23 for.cond.for.end_crit_edge: ; preds = %for.inc 24 store i32 %inc, i32* @a, align 4, !dbg !17 25 br label %for.end, !dbg !18 26 27 for.end: ; preds = %entry, %for.cond.for.end_crit_edge 28 ret void, !dbg !23 29 } 30 31 ; Function Attrs: nounwind readnone speculatable 32 declare void @llvm.dbg.label(metadata) #0 33 34 attributes #0 = { nounwind readnone speculatable } 35 36 !llvm.dbg.cu = !{!2} 37 !llvm.module.flags = !{!7, !8, !9} 38 39 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 40 !1 = distinct !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) 41 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 42 !3 = !DIFile(filename: "small.c", directory: "./") 43 !4 = !{} 44 !5 = !{!0} 45 !6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 46 !7 = !{i32 2, !"Dwarf Version", i32 4} 47 !8 = !{i32 2, !"Debug Info Version", i32 3} 48 !9 = !{i32 1, !"wchar_size", i32 4} 49 !10 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 3, type: !11, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: true, unit: !2, retainedNodes: !13) 50 !11 = !DISubroutineType(types: !12) 51 !12 = !{null} 52 !13 = !{!14} 53 !14 = !DILabel(scope: !15, name: "L", file: !3, line: 6) 54 !15 = distinct !DILexicalBlock(scope: !16, file: !3, line: 5, column: 3) 55 !16 = distinct !DILexicalBlock(scope: !10, file: !3, line: 5, column: 3) 56 !17 = !DILocation(line: 5, column: 10, scope: !15) 57 !18 = !DILocation(line: 5, column: 3, scope: !16) 58 !19 = !DILocation(line: 6, column: 3, scope: !15) 59 !20 = !DILocation(line: 5, column: 14, scope: !15) 60 !21 = distinct !{!21, !18, !22} 61 !22 = !DILocation(line: 6, column: 5, scope: !16) 62 !23 = !DILocation(line: 7, column: 1, scope: !10) 63 64
