1 ; RUN: llc -filetype=obj -o - < %s | llvm-dwarfdump - | FileCheck %s 2 ; 3 ; Created using clang -g -O3 from: 4 ; struct S0 { 5 ; short f0; 6 ; int f3; 7 ; } a; 8 ; void fn1(short p1) { 9 ; struct S0 b, c = {3}; 10 ; b.f3 = p1; 11 ; a = b = c; 12 ; } 13 ; 14 ; int main() { return 0; } 15 ; 16 ; This is similar to the bug in test/DebugInfo/ARM/PR26163.ll, except that there is an 17 ; extra non-overlapping range first. Thus, we make sure that the backend actually looks 18 ; at all expressions when determining whether to merge ranges, not just the first one. 19 ; AS in 26163, we expect two ranges (as opposed to one), the first one being zero sized 20 ; 21 ; 22 ; CHECK: 0x00000025: Beginning address offset: 0x0000000000000004 23 ; CHECK: Ending address offset: 0x0000000000000004 24 ; CHECK: Location description: 10 03 55 93 04 25 ; CHECK: Beginning address offset: 0x0000000000000004 26 ; CHECK: Ending address offset: 0x0000000000000014 27 ; CHECK: Location description: 10 03 10 00 28 29 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 30 target triple = "x86_64-apple-macosx10.11.0" 31 32 %struct.S0 = type { i16, i32 } 33 34 @a = common global %struct.S0 zeroinitializer, align 4 35 36 declare void @llvm.dbg.declare(metadata, metadata, metadata) 37 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) 38 39 ; The attributes are here to force the zero-sized range not to be at the start of 40 ; the function, which has special interpretation in DWARF. The fact that this happens 41 ; at all is probably an LLVM bug. 42 attributes #0 = { "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } 43 define void @fn1(i16 signext %p1) #0 !dbg !4 { 44 entry: 45 tail call void @llvm.dbg.value(metadata i16 %p1, i64 0, metadata !9, metadata !26), !dbg !27 46 tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !10, metadata !26), !dbg !28 47 tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !16, metadata !26), !dbg !29 48 tail call void @llvm.dbg.value(metadata i32 3, i64 0, metadata !16, metadata !30), !dbg !29 49 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !16, metadata !31), !dbg !29 50 tail call void @llvm.dbg.value(metadata i16 %p1, i64 0, metadata !10, metadata !32), !dbg !28 51 tail call void @llvm.dbg.value(metadata i32 3, i64 0, metadata !10, metadata !30), !dbg !28 52 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !31), !dbg !28 53 store i32 3, i32* bitcast (%struct.S0* @a to i32*), align 4, !dbg !33 54 store i32 0, i32* getelementptr inbounds (%struct.S0, %struct.S0* @a, i64 0, i32 1), align 4, !dbg !33 55 ret void, !dbg !34 56 } 57 58 define i32 @main() !dbg !17 { 59 entry: 60 ret i32 0, !dbg !35 61 } 62 63 !llvm.dbg.cu = !{!0} 64 !llvm.module.flags = !{!22, !23, !24} 65 !llvm.ident = !{!25} 66 67 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (https://github.com/llvm-mirror/clang 8f258397c5afd7a708bd95770c718e81d08fb11a) (https://github.com/llvm-mirror/llvm 18481855bdfa1b4a424f81be8525db002671348d)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !20) 68 !1 = !DIFile(filename: "small.c", directory: "/Users/kfischer/Projects/clangbug") 69 !2 = !{} 70 !4 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !8) 71 !5 = !DISubroutineType(types: !6) 72 !6 = !{null, !7} 73 !7 = !DIBasicType(name: "short", size: 16, align: 16, encoding: DW_ATE_signed) 74 !8 = !{!9, !10, !16} 75 !9 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !1, line: 5, type: !7) 76 !10 = !DILocalVariable(name: "b", scope: !4, file: !1, line: 6, type: !11) 77 !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 1, size: 64, align: 32, elements: !12) 78 !12 = !{!13, !14} 79 !13 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !11, file: !1, line: 2, baseType: !7, size: 16, align: 16) 80 !14 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !11, file: !1, line: 3, baseType: !15, size: 32, align: 32, offset: 32) 81 !15 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 82 !16 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 6, type: !11) 83 !17 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 11, type: !18, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, unit: !0, variables: !2) 84 !18 = !DISubroutineType(types: !19) 85 !19 = !{!15} 86 !20 = !{!21} 87 !21 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true, variable: %struct.S0* @a) 88 !22 = !{i32 2, !"Dwarf Version", i32 2} 89 !23 = !{i32 2, !"Debug Info Version", i32 3} 90 !24 = !{i32 1, !"PIC Level", i32 2} 91 !25 = !{!"clang version 3.9.0 (https://github.com/llvm-mirror/clang 8f258397c5afd7a708bd95770c718e81d08fb11a) (https://github.com/llvm-mirror/llvm 18481855bdfa1b4a424f81be8525db002671348d)"} 92 !26 = !DIExpression() 93 !27 = !DILocation(line: 5, column: 16, scope: !4) 94 !28 = !DILocation(line: 6, column: 13, scope: !4) 95 !29 = !DILocation(line: 6, column: 16, scope: !4) 96 !30 = !DIExpression(DW_OP_bit_piece, 0, 32) 97 !31 = !DIExpression(DW_OP_bit_piece, 32, 32) 98 !32 = !DIExpression(DW_OP_bit_piece, 32, 16) 99 !33 = !DILocation(line: 8, column: 9, scope: !4) 100 !34 = !DILocation(line: 9, column: 1, scope: !4) 101 !35 = !DILocation(line: 11, column: 14, scope: !17) 102
