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llvm-project/lld/test/ELF/gdb-index-empty.s

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[LLD] Mark a number of x86 only tests to require x86 Noticed while testing for an out of tree target. There are probably more tests that should be so marked. I'm not sure who owns these tests so I've added a few names I recognise from the recent history. With advice from probinson, ruiu, rafael and dramatically improved by davidb. Thank you all! Differential Revision: https://reviews.llvm.org/D34685 llvm-svn: 308335
2017-07-19 02:40:50 +08:00
# REQUIRES: x86
ELF: --gdb-index: Change findSection to return an InputSection. We should only ever expect this function to return a regular InputSection; I would not expect a function definition to be in a MergeInputSection or EhInputSection. We were previously crashing in writeTo if this function returned a section that was not an InputSection because we do not set OutSec for such sections. This can happen in practice if a function is defined in an empty section which shares its offset-in-file with a MergeInputSection, as in the provided test case. A better fix for this bug would be to fix the DWARFUnit::collectAddressRanges() interface to provide section information (see D33183), but this at least fixes the crash. Differential Revision: https://reviews.llvm.org/D33176 llvm-svn: 303089
2017-05-16 01:59:21 +08:00
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux -o %t %s
# RUN: ld.lld --gdb-index --gc-sections -o %t2 %t
Update testcases for llvm-dwarfdump command line interface change llvm-svn: 312974
2017-09-12 07:28:21 +08:00
# RUN: llvm-dwarfdump -gdb-index %t2 | FileCheck %s
ELF: --gdb-index: Change findSection to return an InputSection. We should only ever expect this function to return a regular InputSection; I would not expect a function definition to be in a MergeInputSection or EhInputSection. We were previously crashing in writeTo if this function returned a section that was not an InputSection because we do not set OutSec for such sections. This can happen in practice if a function is defined in an empty section which shares its offset-in-file with a MergeInputSection, as in the provided test case. A better fix for this bug would be to fix the DWARFUnit::collectAddressRanges() interface to provide section information (see D33183), but this at least fixes the crash. Differential Revision: https://reviews.llvm.org/D33176 llvm-svn: 303089
2017-05-16 01:59:21 +08:00
# CHECK: Address area offset = 0x28, has 0 entries:
# Generated with: (clang r302976)
# echo "void _start() { __builtin_unreachable(); }" | \
# clang -Os -g -S -o gdb-index-empty.s -x c - -Xclang -fdebug-compilation-dir -Xclang .
[ELF] - Simplify gdb-index-empty.s Just simplifies existent test. Differential revision: https://reviews.llvm.org/D33986 llvm-svn: 305073
2017-06-09 21:30:36 +08:00
.text
.globl _start
.type _start,@function
_start:
ELF: --gdb-index: Change findSection to return an InputSection. We should only ever expect this function to return a regular InputSection; I would not expect a function definition to be in a MergeInputSection or EhInputSection. We were previously crashing in writeTo if this function returned a section that was not an InputSection because we do not set OutSec for such sections. This can happen in practice if a function is defined in an empty section which shares its offset-in-file with a MergeInputSection, as in the provided test case. A better fix for this bug would be to fix the DWARFUnit::collectAddressRanges() interface to provide section information (see D33183), but this at least fixes the crash. Differential Revision: https://reviews.llvm.org/D33176 llvm-svn: 303089
2017-05-16 01:59:21 +08:00
.Lfunc_begin0:
.Lfunc_end0:
[ELF] - Simplify gdb-index-empty.s Just simplifies existent test. Differential revision: https://reviews.llvm.org/D33986 llvm-svn: 305073
2017-06-09 21:30:36 +08:00
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 14 # DW_FORM_strp
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
ELF: --gdb-index: Change findSection to return an InputSection. We should only ever expect this function to return a regular InputSection; I would not expect a function definition to be in a MergeInputSection or EhInputSection. We were previously crashing in writeTo if this function returned a section that was not an InputSection because we do not set OutSec for such sections. This can happen in practice if a function is defined in an empty section which shares its offset-in-file with a MergeInputSection, as in the provided test case. A better fix for this bug would be to fix the DWARFUnit::collectAddressRanges() interface to provide section information (see D33183), but this at least fixes the crash. Differential Revision: https://reviews.llvm.org/D33176 llvm-svn: 303089
2017-05-16 01:59:21 +08:00
[ELF] - Simplify gdb-index-empty.s Just simplifies existent test. Differential revision: https://reviews.llvm.org/D33986 llvm-svn: 305073
2017-06-09 21:30:36 +08:00
.section .debug_info,"",@progbits
.long 60 # Length of Unit
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
.long 0 # DW_AT_producer
.short 12 # DW_AT_language
.long 0 # DW_AT_name
.long 0 # DW_AT_stmt_list
.long 0 # DW_AT_comp_dir
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
Remove trailing whitespace. llvm-svn: 320520
2017-12-13 04:00:30 +08:00
.byte 87
[ELF] - Simplify gdb-index-empty.s Just simplifies existent test. Differential revision: https://reviews.llvm.org/D33986 llvm-svn: 305073
2017-06-09 21:30:36 +08:00
.long 0 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.byte 0 # End Of Children Mark