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| ; RUN: llc -filetype=obj -o - < %s | llvm-dwarfdump - --debug-loc | FileCheck %s
| ;
| ; Created using clang -g -O3 from:
| ; struct S0 {
| ; short f0;
| ; int f3;
| ; } a;
| ; void fn1(short p1) {
| ; struct S0 b, c = {3};
| ; b.f3 = p1;
| ; a = b = c;
| ; }
| ;
| ; int main() { return 0; }
| ;
| ; This is similar to the bug in test/DebugInfo/ARM/PR26163.ll, except that there is an
| ; extra non-overlapping range first. Thus, we make sure that the backend actually looks
| ; at all expressions when determining whether to merge ranges, not just the first one.
| ; AS in 26163, we expect two ranges (as opposed to one), the first one being zero sized
| ;
| ;
| ; CHECK: [0x0000000000000004, 0x0000000000000004): DW_OP_constu 0x3, DW_OP_piece 0x4, DW_OP_reg5 RDI, DW_OP_piece 0x2
| ; CHECK: [0x0000000000000004, 0x0000000000000014): DW_OP_constu 0x3, DW_OP_piece 0x4, DW_OP_constu 0x0, DW_OP_piece 0x4
|
| source_filename = "test/DebugInfo/X86/PR26148.ll"
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
| target triple = "x86_64-apple-macosx10.11.0"
|
| %struct.S0 = type { i16, i32 }
|
| @a = common global %struct.S0 zeroinitializer, align 4, !dbg !0
|
| ; Function Attrs: nounwind readnone
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
|
| ; Function Attrs: nounwind readnone
| declare void @llvm.dbg.value(metadata, metadata, metadata) #0
| ; The attributes are here to force the zero-sized range not to be at the start of
| ; the function, which has special interpretation in DWARF. The fact that this happens
| ; at all is probably an LLVM bug.
|
| define void @fn1(i16 signext %p1) #1 !dbg !16 {
| entry:
| tail call void @llvm.dbg.value(metadata i16 %p1, metadata !20, metadata !23), !dbg !24
| tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !21, metadata !23), !dbg !25
| tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !22, metadata !23), !dbg !26
| tail call void @llvm.dbg.value(metadata i32 3, metadata !22, metadata !27), !dbg !26
| tail call void @llvm.dbg.value(metadata i32 0, metadata !22, metadata !28), !dbg !26
| tail call void @llvm.dbg.value(metadata i16 %p1, metadata !21, metadata !29), !dbg !25
| tail call void @llvm.dbg.value(metadata i32 3, metadata !21, metadata !27), !dbg !25
| tail call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !28), !dbg !25
| store i32 3, i32* bitcast (%struct.S0* @a to i32*), align 4, !dbg !30
| store i32 0, i32* getelementptr inbounds (%struct.S0, %struct.S0* @a, i64 0, i32 1), align 4, !dbg !30
| ret void, !dbg !31
| }
|
| define i32 @main() !dbg !32 {
| entry:
| ret i32 0, !dbg !35
| }
|
| attributes #0 = { nounwind readnone }
| attributes #1 = { "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" }
|
| !llvm.dbg.cu = !{!2}
| !llvm.module.flags = !{!12, !13, !14}
| !llvm.ident = !{!15}
|
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
| !1 = !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)
| !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, 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: !4, globals: !5)
| !3 = !DIFile(filename: "small.c", directory: "/Users/kfischer/Projects/clangbug")
| !4 = !{}
| !5 = !{!0}
| !6 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !3, line: 1, size: 64, align: 32, elements: !7)
| !7 = !{!8, !10}
| !8 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !6, file: !3, line: 2, baseType: !9, size: 16, align: 16)
| !9 = !DIBasicType(name: "short", size: 16, align: 16, encoding: DW_ATE_signed)
| !10 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !6, file: !3, line: 3, baseType: !11, size: 32, align: 32, offset: 32)
| !11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
| !12 = !{i32 2, !"Dwarf Version", i32 2}
| !13 = !{i32 2, !"Debug Info Version", i32 3}
| !14 = !{i32 1, !"PIC Level", i32 2}
| !15 = !{!"clang version 3.9.0 (https://github.com/llvm-mirror/clang 8f258397c5afd7a708bd95770c718e81d08fb11a) (https://github.com/llvm-mirror/llvm 18481855bdfa1b4a424f81be8525db002671348d)"}
| !16 = distinct !DISubprogram(name: "fn1", scope: !3, file: !3, line: 5, type: !17, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !19)
| !17 = !DISubroutineType(types: !18)
| !18 = !{null, !9}
| !19 = !{!20, !21, !22}
| !20 = !DILocalVariable(name: "p1", arg: 1, scope: !16, file: !3, line: 5, type: !9)
| !21 = !DILocalVariable(name: "b", scope: !16, file: !3, line: 6, type: !6)
| !22 = !DILocalVariable(name: "c", scope: !16, file: !3, line: 6, type: !6)
| !23 = !DIExpression()
| !24 = !DILocation(line: 5, column: 16, scope: !16)
| !25 = !DILocation(line: 6, column: 13, scope: !16)
| !26 = !DILocation(line: 6, column: 16, scope: !16)
| !27 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
| !28 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
| !29 = !DIExpression(DW_OP_LLVM_fragment, 32, 16)
| !30 = !DILocation(line: 8, column: 9, scope: !16)
| !31 = !DILocation(line: 9, column: 1, scope: !16)
| !32 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 11, type: !33, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, unit: !2, retainedNodes: !4)
| !33 = !DISubroutineType(types: !34)
| !34 = !{!11}
| !35 = !DILocation(line: 11, column: 14, scope: !32)
|
|
