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llvm-project/lld/test/COFF/icf-local.test

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COFF: Non-external COMDAT sections sholud not be merged by ICF. If a section symbol is not external, that COMDAT section should never be merge with other sections in other compilation unit. Previously, we didn't take visibility into account. Note that COMDAT sections with non-external visibility makes sense because they can be removed by dead-stripping. Fixes https://llvm.org/bugs/show_bug.cgi?id=25686 llvm-svn: 254578
2015-12-03 10:23:33 +08:00
# COMDAT sections with non-external linkage should not be merged by ICF.
[test] Replace `yaml2obj >` with `yaml2obj -o` and remove unneeded input redirection
2020-08-21 06:00:25 +08:00
# RUN: yaml2obj %s -o %t1.obj
COFF: Non-external COMDAT sections sholud not be merged by ICF. If a section symbol is not external, that COMDAT section should never be merge with other sections in other compilation unit. Previously, we didn't take visibility into account. Note that COMDAT sections with non-external visibility makes sense because they can be removed by dead-stripping. Fixes https://llvm.org/bugs/show_bug.cgi?id=25686 llvm-svn: 254578
2015-12-03 10:23:33 +08:00
# RUN: sed s/foo/main/ %s | yaml2obj > %t2.obj
# RUN: lld-link /out:%t.exe /entry:main /subsystem:console /verbose \
# RUN: %t1.obj %t2.obj > %t.log 2>&1
# RUN: FileCheck %s < %t.log
# CHECK-NOT: Removed bar
[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
COFF: Non-external COMDAT sections sholud not be merged by ICF. If a section symbol is not external, that COMDAT section should never be merge with other sections in other compilation unit. Previously, we didn't take visibility into account. Note that COMDAT sections with non-external visibility makes sense because they can be removed by dead-stripping. Fixes https://llvm.org/bugs/show_bug.cgi?id=25686 llvm-svn: 254578
2015-12-03 10:23:33 +08:00
header:
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: []
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: 488D0500000000C3
Relocations:
- VirtualAddress: 3
SymbolName: bar
Type: IMAGE_REL_AMD64_REL32
- Name: .rdata
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_READ ]
Alignment: 8
SectionData: 2A000000000000002B00000000000000
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 8
NumberOfRelocations: 1
NumberOfLinenumbers: 0
CheckSum: 1092178131
Number: 1
- Name: .rdata
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 16
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 1200668497
Number: 5
Selection: IMAGE_COMDAT_SELECT_ANY
- Name: foo
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: bar
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
...