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llvm-mirror/test/DebugInfo/Generic/debug-label-inline.ll

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[DebugInfo] Fix debug information label tests Remove the space in the asm check so that the expression is more general and can also capture MIPS labels which can be surrounded by braces, e.g.: .4byte ($tmp1) # DW_AT_low_pc Also change optimization level to O0 because the DW_TAG_label does not appear on MIPS when -O2 is used. Patch by Milos Stojanovic. Differential Revision: https://reviews.llvm.org/D52901 llvm-svn: 343999
2018-10-09 00:10:34 +02:00
; RUN: llc -O0 -filetype=obj -o - %s | llvm-dwarfdump -v - | FileCheck %s
[DebugInfo] Generate DWARF debug information for labels. (Fix leak problems) There are two forms for label debug information in DWARF format. 1. Labels in a non-inlined function: DW_TAG_label DW_AT_name DW_AT_decl_file DW_AT_decl_line DW_AT_low_pc 2. Labels in an inlined function: DW_TAG_label DW_AT_abstract_origin DW_AT_low_pc We will collect label information from DBG_LABEL. Before every DBG_LABEL, we will generate a temporary symbol to denote the location of the label. The symbol could be used to get DW_AT_low_pc afterwards. So, we create a mapping between 'inlined label' and DBG_LABEL MachineInstr in DebugHandlerBase. The DBG_LABEL in the mapping is used to query the symbol before it. The AbstractLabels in DwarfCompileUnit is used to process labels in inlined functions. We also keep a mapping between scope and labels in DwarfFile to help to generate correct tree structure of DIEs. It also generates label debug information under global isel. Differential Revision: https://reviews.llvm.org/D45556 llvm-svn: 340039
2018-08-17 17:22:04 +02:00
;
[test] XFAIL two tests with inlining debug info issues on Sparc Currently only two test failures remain on Sparc, both `sparcv9-sun-solaris2.11` and `sparc64-unknown-linux-gnu`: LLVM :: DebugInfo/Generic/debug-label-inline.ll LLVM :: Linker/subprogram-linkonce-weak.ll They seem related in that debug info isn't generated for instruction bundles (like `retl+add` in the delay slot). I've filed separate bugs for both files (Bug 47129 and 47131), though it's probably the same issue. This patch `XFAIL`s the tests. Tested on `sparcv9-sun-solaris2.11` and `amd64-pc-solaris2.11`. Differential Revision: https://reviews.llvm.org/D85827
2020-08-13 11:12:52 +02:00
; Bug 47129
; XFAIL: sparc
;
[DebugInfo] Generate DWARF debug information for labels. (Fix leak problems) There are two forms for label debug information in DWARF format. 1. Labels in a non-inlined function: DW_TAG_label DW_AT_name DW_AT_decl_file DW_AT_decl_line DW_AT_low_pc 2. Labels in an inlined function: DW_TAG_label DW_AT_abstract_origin DW_AT_low_pc We will collect label information from DBG_LABEL. Before every DBG_LABEL, we will generate a temporary symbol to denote the location of the label. The symbol could be used to get DW_AT_low_pc afterwards. So, we create a mapping between 'inlined label' and DBG_LABEL MachineInstr in DebugHandlerBase. The DBG_LABEL in the mapping is used to query the symbol before it. The AbstractLabels in DwarfCompileUnit is used to process labels in inlined functions. We also keep a mapping between scope and labels in DwarfFile to help to generate correct tree structure of DIEs. It also generates label debug information under global isel. Differential Revision: https://reviews.llvm.org/D45556 llvm-svn: 340039
2018-08-17 17:22:04 +02:00
; CHECK: .debug_info contents:
; CHECK: [[LABEL_ORIGIN:0x[0-9a-zA-Z]+]]:{{ *}}DW_TAG_label
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] {{.*}}"top"
; CHECK-NEXT: DW_AT_decl_file [DW_FORM_data1] {{.*}}debug-label-inline.c
; CHECK-NEXT: DW_AT_decl_line [DW_FORM_data1] {{.*}}8
; CHECK: DW_TAG_label
; CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{[[LABEL_ORIGIN]]} "top"
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] {{.*}}{{0x[0-9a-f]+}}
source_filename = "debug-label-inline.c"
@ga = external local_unnamed_addr global i32, align 4
@gb = external local_unnamed_addr global i32, align 4
define i32 @f2() local_unnamed_addr #0 !dbg !4 {
entry:
%0 = load i32, i32* @ga, align 4, !dbg !1
%1 = load i32, i32* @gb, align 4, !dbg !1
call void @llvm.dbg.label(metadata !15), !dbg !17
%add.i = add nsw i32 %1, %0, !dbg !18
ret i32 %add.i, !dbg !1
}
declare void @llvm.dbg.label(metadata)
declare void @llvm.dbg.value(metadata, metadata, metadata)
attributes #0 = { nounwind readonly }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !6, isOptimized: true, emissionKind: FullDebug, enums: !2)
!1 = !DILocation(line: 18, scope: !4)
!2 = !{}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "f2", scope: !6, file: !6, line: 15, type: !7, isLocal: false, isDefinition: true, scopeLine: 15, isOptimized: true, unit: !0, retainedNodes: !2)
!6 = !DIFile(filename: "debug-label-inline.c", directory: "./")
!7 = !DISubroutineType(types: !8)
!8 = !{!10}
!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!11 = distinct !DISubprogram(name: "f1", scope: !6, file: !6, line: 5, type: !12, isLocal: false, isDefinition: true, scopeLine: 5, isOptimized: true, unit: !0, retainedNodes: !14)
!12 = !DISubroutineType(types: !13)
!13 = !{!10, !10, !10}
!14 = !{!15}
!15 = !DILabel(scope: !11, name: "top", file: !6, line: 8)
!16 = distinct !DILocation(line: 18, scope: !4)
!17 = !DILocation(line: 8, scope: !11, inlinedAt: !16)
!18 = !DILocation(line: 9, scope: !11, inlinedAt: !16)
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