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llvm-mirror/test/CodeGen/X86/dwarf-split-line-2.ll

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[DWARF] Suppress split line tables more carefully. If a given split type unit does not have source locations, don't have it refer to the split line table. If no split type unit refers to the split line table, don't emit the line table at all. This will save a little space on rare occasions, but also refactors things a bit to improve which class is responsible for what. Responding to review comments on r326395. Differential Revision: https://reviews.llvm.org/D44220 llvm-svn: 328670
2018-03-27 23:28:59 +02:00
; Verify that if we have two split type units, one with source locations and
; one without, the one without locations doesn't have a DW_AT_stmt_list
; attribute, but the other one does and the .debug_line.dwo section is present.
CodeGen: Add a dwo output file argument to addPassesToEmitFile and hook it up to dwo output. Part of PR37466. Differential Revision: https://reviews.llvm.org/D47089 llvm-svn: 332881
2018-05-21 22:16:41 +02:00
; RUN: llc -split-dwarf-file=foo.dwo -split-dwarf-output=%t.dwo \
; RUN: -dwarf-version=5 -generate-type-units \
; RUN: -filetype=obj -O0 -mtriple=x86_64-unknown-linux-gnu < %s
; RUN: llvm-dwarfdump -v %t.dwo | FileCheck %s
[DWARF] Suppress split line tables more carefully. If a given split type unit does not have source locations, don't have it refer to the split line table. If no split type unit refers to the split line table, don't emit the line table at all. This will save a little space on rare occasions, but also refactors things a bit to improve which class is responsible for what. Responding to review comments on r326395. Differential Revision: https://reviews.llvm.org/D44220 llvm-svn: 328670
2018-03-27 23:28:59 +02:00
; Currently the no-source-location type comes out first.
; FIXME: V5 wants type units in .debug_info.dwo not .debug_types.dwo.
; CHECK: .debug_types.dwo contents:
; CHECK: 0x00000000: Type Unit: {{.*}} name = 'S'
; CHECK-SAME: (next unit at [[TU2:0x[0-9a-f]+]])
; CHECK: DW_TAG_type_unit
; CHECK-NOT: DW_AT_stmt_list
; CHECK-NOT: DW_AT_decl_file
; CHECK: [[TU2]]: Type Unit: {{.*}} name = 'T'
; CHECK: DW_TAG_type_unit
; CHECK: DW_AT_stmt_list
; CHECK: DW_AT_decl_file
; CHECK: .debug_line.dwo
; CHECK-NOT: standard_opcode_lengths
; CHECK: file_names[ 0]:
; CHECK-NEXT: name: "t.cpp"
; CHECK-NEXT: dir_index: 0
; ModuleID = 't.cpp'
source_filename = "t.cpp"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
%struct.S = type { i32 }
%struct.T = type { i32 }
@s = global %struct.S zeroinitializer, align 4, !dbg !0
@t = global %struct.T zeroinitializer, align 4, !dbg !14
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!8, !9}
!llvm.ident = !{!10}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 5, type: !6, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 5.0.0 (trunk 295942)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "t.cpp", directory: "/home/probinson/projects/scratch")
!4 = !{}
!5 = !{!0,!14}
!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "S", size: 32, elements: !7, identifier: "_ZTS1S")
!7 = !{}
!8 = !{i32 2, !"Dwarf Version", i32 4}
!9 = !{i32 2, !"Debug Info Version", i32 3}
!10 = !{!"clang version 5.0.0 (trunk 295942)"}
!11 = distinct !DIGlobalVariable(name: "t", scope: !2, file: !3, line: 10, type: !12, isLocal: false, isDefinition: true)
!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "T", file: !3, line: 8, size: 32, elements: !13, identifier: "_ZTS1S")
!13 = !{}
!14 = !DIGlobalVariableExpression(var: !11, expr: !DIExpression())
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