1 ; RUN: opt -S -strip-nonlinetable-debuginfo %s -o %t 2 ; RUN: cat %t | FileCheck %s 3 ; RUN: cat %t | FileCheck %s --check-prefix=NEGATIVE 4 ; void f(volatile int *i) { 5 ; while (--*i) {} 6 ; } 7 source_filename = "/tmp/loop.c" 8 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 9 target triple = "x86_64-apple-macosx10.12.0" 10 11 define void @f(i32* %i) local_unnamed_addr #0 !dbg !7 { 12 entry: 13 tail call void @llvm.dbg.value(metadata i32* %i, metadata !14, metadata !15), !dbg !16 14 br label %while.cond, !dbg !17 15 16 while.cond: ; preds = %while.cond, %entry 17 %0 = load volatile i32, i32* %i, align 4, !dbg !18, !tbaa !19 18 %dec = add nsw i32 %0, -1, !dbg !18 19 store volatile i32 %dec, i32* %i, align 4, !dbg !18, !tbaa !19 20 %tobool = icmp eq i32 %dec, 0, !dbg !17 21 ; CHECK: !llvm.loop ![[LOOP:[0-9]+]] 22 br i1 %tobool, label %while.end, label %while.cond, !dbg !17, !llvm.loop !23 23 24 while.end: ; preds = %while.cond 25 ret void, !dbg !25 26 } 27 28 ; Function Attrs: nounwind readnone 29 declare void @llvm.dbg.value(metadata, metadata, metadata) #1 30 31 attributes #0 = { nounwind ssp uwtable } 32 attributes #1 = { nounwind readnone } 33 34 !llvm.dbg.cu = !{!0} 35 !llvm.module.flags = !{!3, !4, !5} 36 !llvm.ident = !{!6} 37 38 ; CHECK: ![[CU:.*]] = distinct !DICompileUnit(language: DW_LANG_C99, 39 ; CHECK-SAME: emissionKind: LineTablesOnly 40 ; NEGATIVE-NOT: !DICompileUnit({{.*}} emissionKind: FullDebug 41 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 298880) (llvm/trunk 298875)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 42 !1 = !DIFile(filename: "/tmp/loop.c", directory: "/") 43 !2 = !{} 44 !3 = !{i32 2, !"Dwarf Version", i32 4} 45 !4 = !{i32 2, !"Debug Info Version", i32 3} 46 !5 = !{i32 1, !"PIC Level", i32 2} 47 !6 = !{!"clang version 5.0.0 (trunk 298880) (llvm/trunk 298875)"} 48 ; CHECK: ![[F:[0-9]]] = distinct !DISubprogram(name: "f", scope: !1 49 !7 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13) 50 !8 = !DISubroutineType(types: !9) 51 !9 = !{null, !10} 52 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64) 53 !11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !12) 54 ; NEGATIVE-NOT: !DIBasicType(name: "int", 55 !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 56 !13 = !{!14} 57 !14 = !DILocalVariable(name: "i", arg: 1, scope: !7, file: !1, line: 1, type: !10) 58 !15 = !DIExpression() 59 !16 = !DILocation(line: 1, column: 22, scope: !7) 60 ; CHECK: ![[BEGIN:[0-9]+]] = !DILocation(line: 2, column: 3, scope: ![[F]]) 61 !17 = !DILocation(line: 2, column: 3, scope: !7) 62 !18 = !DILocation(line: 2, column: 10, scope: !7) 63 !19 = !{!20, !20, i64 0} 64 !20 = !{!"int", !21, i64 0} 65 !21 = !{!"omnipotent char", !22, i64 0} 66 !22 = !{!"Simple C/C++ TBAA"} 67 ; CHECK: ![[LOOP]] = distinct !{![[LOOP]], ![[BEGIN]], ![[END:[0-9]+]]} 68 !23 = distinct !{!23, !17, !24} 69 ; CHECK: ![[END]] = !DILocation(line: 3, column: 3, scope: ![[F]]) 70 !24 = !DILocation(line: 3, column: 3, scope: !7) 71 !25 = !DILocation(line: 4, column: 1, scope: !7) 72
