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llvm-project/lld/test/ELF/gc-sections-linkorder2.s

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[ELF] - Allow section to have multiple dependent sections. That fixes a case when section has more than one metadata section. Previously GC would collect one of such sections because we had implementation that stored only last one as dependent. Differential revision: https://reviews.llvm.org/D29981 llvm-svn: 295298
2017-02-16 16:41:19 +08:00
# REQUIRES: x86
[ELF][test] Rename SHF_LINK_ORDER related "metadata" to "linkorder" Test cleanups.
2020-02-27 08:24:58 +08:00
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: ld.lld --gc-sections --print-gc-sections %t.o -o /dev/null | count 0
[ELF] - Allow section to have multiple dependent sections. That fixes a case when section has more than one metadata section. Previously GC would collect one of such sections because we had implementation that stored only last one as dependent. Differential revision: https://reviews.llvm.org/D29981 llvm-svn: 295298
2017-02-16 16:41:19 +08:00
.globl _start
_start:
.quad .foo
[ELF][test] Rename SHF_LINK_ORDER related "metadata" to "linkorder" Test cleanups.
2020-02-27 08:24:58 +08:00
## .foo is retained, so sections linking to it are retained as well.
[ELF] - Allow section to have multiple dependent sections. That fixes a case when section has more than one metadata section. Previously GC would collect one of such sections because we had implementation that stored only last one as dependent. Differential revision: https://reviews.llvm.org/D29981 llvm-svn: 295298
2017-02-16 16:41:19 +08:00
.section .foo,"a"
.quad 0
Change section flag character for SHF_LINK_ORDER to "o". See matching MC change in https://reviews.llvm.org/D31554. llvm-svn: 299480
2017-04-05 06:35:16 +08:00
.section .bar,"ao",@progbits,.foo
[ELF] - Allow section to have multiple dependent sections. That fixes a case when section has more than one metadata section. Previously GC would collect one of such sections because we had implementation that stored only last one as dependent. Differential revision: https://reviews.llvm.org/D29981 llvm-svn: 295298
2017-02-16 16:41:19 +08:00
.quad 0
Change section flag character for SHF_LINK_ORDER to "o". See matching MC change in https://reviews.llvm.org/D31554. llvm-svn: 299480
2017-04-05 06:35:16 +08:00
.section .zed,"ao",@progbits,.foo
[ELF] - Allow section to have multiple dependent sections. That fixes a case when section has more than one metadata section. Previously GC would collect one of such sections because we had implementation that stored only last one as dependent. Differential revision: https://reviews.llvm.org/D29981 llvm-svn: 295298
2017-02-16 16:41:19 +08:00
.quad 0
[ELF] --gc-sections: retain dependent sections of non-SHF_ALLOC sections Fix http://lists.llvm.org/pipermail/llvm-dev/2020-October/145908.html Currently non-SHF_ALLOC SHT_REL[A] (due to --emit-relocs) and SHF_LINK_ORDER are not marked live. Reviewed By: grimar, psmith Differential Revision: https://reviews.llvm.org/D89841
2020-10-22 01:11:20 +08:00
.section .nonalloc
.quad 0
.section .nonalloc_linkorder,"o",@progbits,.nonalloc
.quad 0