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7517775e7d
As a resolution to https://sourceware.org/bugzilla/show_bug.cgi?id=25295 , GNU as from binutils 2.35 supports the optional third argument for the .symver directive. 'remove' for a non-default version is useful: `.symver def_v1, def@v1, remove` => def_v1 is not retained in the symbol table. Previously the user has to strip the original symbol or specify a `local:` version node in a version script to localize the symbol. `.symver def, def@@v1, remove` and `.symver def, def@@@v1, remove` are supported as well, though they are identical to `.symver def, def@@@v1`. local/hidden are not useful so this patch does not implement them.
37 lines
1.1 KiB
ArmAsm
37 lines
1.1 KiB
ArmAsm
# RUN: llvm-mc -triple=x86_64 %s | FileCheck %s --check-prefix=ASM
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t
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# RUN: llvm-readelf -s %t | FileCheck %s
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# ASM: .symver nondef, nondef@v1, remove
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# ASM-NEXT: nondef:
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# ASM: .symver def0, def0@@v2, remove
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# ASM-NEXT: .symver def1, def1@@@v2{{$}}
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# ASM-NEXT: def0:
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# ASM-NEXT: def1:
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# ASM: .symver def2, def2@v1, remove
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# ASM-NEXT: .symver def2, def2@@v2{{$}}
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# ASM-NEXT: def2:
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# CHECK: 1: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] nondef@v1
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# CHECK-NEXT: 2: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] def0@@v2
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# CHECK-NEXT: 3: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] def1@@v2
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# CHECK-NEXT: 4: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] def2@v1
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# CHECK-NEXT: 5: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] def2@@v2
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# CHECK-NOT: {{.}}
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.globl nondef
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.symver nondef, nondef@v1, remove
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nondef:
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.globl def0, def1, def2
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.symver def0, def0@@v2, remove
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.symver def1, def1@@@v2, remove
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def0:
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def1:
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## Giving multiple versions to the same original symbol is not useful.
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## This test just documents the behavior.
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.symver def2, def2@v1, remove
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.symver def2, def2@@v2
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def2:
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