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llvm-mirror/test/DebugInfo/X86/constant-loclist.ll
Pavel Labath 4d9933df28 Re-commit "DWARF location lists: Add section index dumping"
This reapplies c0f6ad7d1f3ccb9d0b9ce9ef8dfa06409ccf1b3e with an
additional fix in test/DebugInfo/X86/constant-loclist.ll, which had a
slightly different output on windows targets. The test now accounts for
this difference.

The original commit message follows.

Summary:
As discussed in D70081, this adds the ability to dump section
names/indices to the location list dumper. It does this by moving the
range specific logic from DWARFDie.cpp:dumpRanges into the
DWARFAddressRange class.

The trickiest part of this patch is the backflip in the meanings of the
two dump flags for the location list sections.

The dumping of "raw" location list data is now controlled by
"DisplayRawContents" flag. This frees up the "Verbose" flag to be used
to control whether we print the section index. Additionally, the
DisplayRawContents flag is set for section-based dumps whenever the
--verbose option is passed, but this is not done for the "inline" dumps.

Also note that the index dumping currently does not work for the DWARF
v5 location lists, as the parser does not fill out the appropriate
fields. This will be done in a separate patch.

Reviewers: dblaikie, probinson, JDevlieghere, SouraVX

Subscribers: sdardis, hiraditya, jrtc27, atanasyan, arphaman, aprantl, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70227
2019-11-18 15:30:10 +01:00

75 lines
3.4 KiB
LLVM

; RUN: %llc_dwarf -filetype=obj %s -o - | llvm-dwarfdump -v -debug-info - | FileCheck %s
; A hand-written testcase to check 64-bit constant handling in location lists.
; CHECK: .debug_info contents:
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location [DW_FORM_data4] (
; CHECK-NEXT: {{.*}}: DW_OP_constu 0x4000000000000000)
; CHECK-NEXT: DW_AT_name {{.*}}"d"
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location [DW_FORM_data4] (
; CHECK-NEXT: {{.*}}: DW_OP_consts +0
; CHECK-NEXT: {{.*}}: DW_OP_consts +4611686018427387904)
; CHECK-NEXT: DW_AT_name {{.*}}"i"
; CHECK: DW_TAG_variable
; CHECK-NEXT: DW_AT_location [DW_FORM_data4] (
; CHECK-NEXT: {{.*}}: DW_OP_lit0
; CHECK-NEXT: {{.*}}: DW_OP_constu 0x4000000000000000)
; CHECK-NEXT: DW_AT_name {{.*}}"u"
source_filename = "test.c"
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx"
; Function Attrs: nounwind ssp uwtable
define void @main() #0 !dbg !7 {
%1 = alloca double, align 8
%2 = alloca i64, align 8
%3 = alloca i64, align 8
store double 2.000000e+00, double* %1, align 8, !dbg !21
call void @llvm.dbg.value(metadata i64 0, metadata !22, metadata !15), !dbg !24
call void @llvm.dbg.value(metadata i64 0, metadata !25, metadata !15), !dbg !27
call void @llvm.dbg.value(metadata double 2.000000e+00, metadata !19, metadata !15), !dbg !21
store i64 4611686018427387904, i64* %2, align 8, !dbg !24
call void @llvm.dbg.value(metadata i64 4611686018427387904, metadata !22, metadata !15), !dbg !24
call void @llvm.dbg.value(metadata i64 4611686018427387904, metadata !25, metadata !15), !dbg !27
store i64 4611686018427387904, i64* %3, align 8, !dbg !27
ret void, !dbg !28
}
; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
attributes #0 = { nounwind ssp uwtable }
attributes #1 = { nounwind readnone }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
!1 = !DIFile(filename: "test.c", directory: "/tmp")
!2 = !{}
!3 = !{i32 2, !"Dwarf Version", i32 2}
!4 = !{i32 2, !"Debug Info Version", i32 00000003}
!5 = !{i32 1, !"PIC Level", i32 2}
!6 = !{!"clang"}
!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
!8 = !DISubroutineType(types: !{})
!15 = !DIExpression()
!16 = !DILocation(line: 1, column: 14, scope: !7)
!18 = !DILocation(line: 1, column: 24, scope: !7)
!19 = !DILocalVariable(name: "d", scope: !7, file: !1, line: 2, type: !20)
!20 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
!21 = !DILocation(line: 2, column: 10, scope: !7)
!22 = !DILocalVariable(name: "u", scope: !7, file: !1, line: 3, type: !23)
!23 = !DIBasicType(name: "long long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
!24 = !DILocation(line: 3, column: 22, scope: !7)
!25 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 4, type: !26)
!26 = !DIBasicType(name: "long long int", size: 64, align: 64, encoding: DW_ATE_signed)
!27 = !DILocation(line: 4, column: 20, scope: !7)
!28 = !DILocation(line: 5, column: 3, scope: !7)