1 ; RUN: llc -filetype=obj -o - < %s | llvm-dwarfdump - | FileCheck %s
3 ; Created using clang -g -O3 from:
9 ; struct S0 b, c = {3};
14 ; int main() { return 0; }
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
22 ; CHECK: 0x00000000: 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
29 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
30 target triple = "x86_64-apple-macosx10.11.0"
32 %struct.S0 = type { i16, i32 }
34 @a = common global %struct.S0 zeroinitializer, align 4
36 declare void @llvm.dbg.declare(metadata, metadata, metadata)
37 declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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 {
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
58 define i32 @main() !dbg !17 {
64 !llvm.module.flags = !{!22, !23, !24}
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: 1, enums: !2, subprograms: !3, globals: !20)
68 !1 = !DIFile(filename: "small.c", directory: "/Users/kfischer/Projects/clangbug")
71 !4 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 5, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, variables: !8)
72 !5 = !DISubroutineType(types: !6)
74 !7 = !DIBasicType(name: "short", size: 16, align: 16, encoding: DW_ATE_signed)
76 !9 = !DILocalVariable(name: "p1", arg: 1, scope: !4, file: !1, line: 5, type: !7)
77 !10 = !DILocalVariable(name: "b", scope: !4, file: !1, line: 6, type: !11)
78 !11 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !1, line: 1, size: 64, align: 32, elements: !12)
80 !13 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !11, file: !1, line: 2, baseType: !7, size: 16, align: 16)
81 !14 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !11, file: !1, line: 3, baseType: !15, size: 32, align: 32, offset: 32)
82 !15 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
83 !16 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 6, type: !11)
84 !17 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 11, type: !18, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, variables: !2)
85 !18 = !DISubroutineType(types: !19)
88 !21 = !DIGlobalVariable(name: "a", scope: !0, file: !1, line: 4, type: !11, isLocal: false, isDefinition: true, variable: %struct.S0* @a)
89 !22 = !{i32 2, !"Dwarf Version", i32 2}
90 !23 = !{i32 2, !"Debug Info Version", i32 3}
91 !24 = !{i32 1, !"PIC Level", i32 2}
92 !25 = !{!"clang version 3.9.0 (https://github.com/llvm-mirror/clang 8f258397c5afd7a708bd95770c718e81d08fb11a) (https://github.com/llvm-mirror/llvm 18481855bdfa1b4a424f81be8525db002671348d)"}
94 !27 = !DILocation(line: 5, column: 16, scope: !4)
95 !28 = !DILocation(line: 6, column: 13, scope: !4)
96 !29 = !DILocation(line: 6, column: 16, scope: !4)
97 !30 = !DIExpression(DW_OP_bit_piece, 0, 32)
98 !31 = !DIExpression(DW_OP_bit_piece, 32, 32)
99 !32 = !DIExpression(DW_OP_bit_piece, 32, 16)
100 !33 = !DILocation(line: 8, column: 9, scope: !4)
101 !34 = !DILocation(line: 9, column: 1, scope: !4)
102 !35 = !DILocation(line: 11, column: 14, scope: !17)