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llvm-project/lld/test/COFF/weak-external.test

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[lld] Add REQUIRES: x86 where needed to tests If building lld without x86 support, tests that require that support should be treated as unsupported, not errors. Tested using: 1. cmake '-DLLVM_TARGETS_TO_BUILD=AArch64;X86' make check-lld => Expected Passes : 1406 Unsupported Tests : 287 2. cmake '-DLLVM_TARGETS_TO_BUILD=AArch64' make check-lld => Expected Passes : 410 Unsupported Tests : 1283 Patch by Joel Jones Differential Revision: https://reviews.llvm.org/D47748 llvm-svn: 334095
2018-06-06 21:56:51 +08:00
# REQUIRES: x86
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
# RUN: yaml2obj %s > %t.obj
COFF: Numerous fixes for interaction between LTO and weak externals. We were previously hitting assertion failures in the writer in cases where a regular object file defined a weak external symbol that was defined by a bitcode file. Because /export and /entry name mangling were implemented using weak externals, the same problem affected mangled symbol names in bitcode files. The underlying cause of the problem was that weak external symbols were being resolved before doing LTO, so the symbol table may have contained stale references to bitcode symbols. The fix here is to defer weak external symbol resolution until after LTO. Also implement support for weak external symbols in bitcode files by modelling them as replaceable DefinedBitcode symbols. Differential Revision: http://reviews.llvm.org/D10940 llvm-svn: 241391
2015-07-04 13:28:41 +08:00
# RUN: llvm-as -o %t.lto.obj %S/Inputs/weak-external.ll
COFF: Make test commands shorter. NFC. llvm-svn: 244227
2015-08-07 00:47:46 +08:00
# RUN: lld-link /out:%t1.exe /entry:g /subsystem:console %t.obj
# RUN: lld-link /out:%t2.exe /entry:g /subsystem:console /lldmap:%t2.map %t.obj %t.lto.obj
COFF: Numerous fixes for interaction between LTO and weak externals. We were previously hitting assertion failures in the writer in cases where a regular object file defined a weak external symbol that was defined by a bitcode file. Because /export and /entry name mangling were implemented using weak externals, the same problem affected mangled symbol names in bitcode files. The underlying cause of the problem was that weak external symbols were being resolved before doing LTO, so the symbol table may have contained stale references to bitcode symbols. The fix here is to defer weak external symbol resolution until after LTO. Also implement support for weak external symbols in bitcode files by modelling them as replaceable DefinedBitcode symbols. Differential Revision: http://reviews.llvm.org/D10940 llvm-svn: 241391
2015-07-04 13:28:41 +08:00
# RUN: FileCheck %s < %t2.map
refactor COFF linker to use new LTO API Summary: The COFF linker previously implemented link-time optimization using an API which has now been marked as legacy. This change refactors the COFF linker to use the new LTO API, which is also used by the ELF linker. Reviewers: pcc, ruiu Reviewed By: pcc Subscribers: mgorny, mehdi_amini Differential Revision: https://reviews.llvm.org/D29059 llvm-svn: 293967
2017-02-03 07:58:14 +08:00
# CHECK: lto.tmp
[COFF] Fix LLD COFF tests as a follow-up to r327563 I definitely didn't run the tests before committing :( Most of these tests failed because the LLD map file output changed, moving the functions from the main text section to a new per-function section. ICF also started to fire in a few cases, leading to new layouts. llvm-svn: 327571
2018-03-15 04:41:39 +08:00
# CHECK-NEXT: lto.tmp
COFF: Change the /lldmap output format to be more like the ELF linker. Differential Revision: https://reviews.llvm.org/D28717 llvm-svn: 291990
2017-01-14 11:14:46 +08:00
# CHECK-NEXT: 0 g
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
[yaml2obj] Updating LLD tests to account for LLVM r273915 This removed the -format flag from yaml2obj in favor of YAML tags. llvm-svn: 273920
2016-06-28 04:17:08 +08:00
--- !COFF
Remove trailing whitespace. llvm-svn: 243683
2015-07-31 04:47:17 +08:00
header:
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: [ ]
Remove trailing whitespace. llvm-svn: 243683
2015-07-31 04:47:17 +08:00
sections:
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
- Name: '.text'
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: 00
Remove trailing whitespace. llvm-svn: 243683
2015-07-31 04:47:17 +08:00
symbols:
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
- Name: 'g'
Value: 0
SectionNumber: 0
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_WEAK_EXTERNAL
Remove trailing whitespace. llvm-svn: 243683
2015-07-31 04:47:17 +08:00
WeakExternal:
COFF: Allow forward reference for weak externals Previously, weak external symbols could reference only symbols that appeared before them. Although that covers almost all use cases of weak externals, there are object files out there which contains weak externals that have forward references. This patch supports such weak externals. llvm-svn: 245258
2015-08-18 07:35:43 +08:00
TagIndex: 2
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
Characteristics: IMAGE_WEAK_EXTERN_SEARCH_LIBRARY
COFF: Allow forward reference for weak externals Previously, weak external symbols could reference only symbols that appeared before them. Although that covers almost all use cases of weak externals, there are object files out there which contains weak externals that have forward references. This patch supports such weak externals. llvm-svn: 245258
2015-08-18 07:35:43 +08:00
- Name: 'f'
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
COFF: Fix the case where an object defines a weak external and its alias. This worked before, but only by accident, and only with assertions disabled. We ended up storing a DefinedRegular symbol in the WeakAlias field, and never using it as an Undefined. Differential Revision: http://reviews.llvm.org/D10934 llvm-svn: 241376
2015-07-04 06:03:36 +08:00
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