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llvm-project/lld/test/ELF/no-merge.s

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[ELF] - Disable emiting multiple output sections when merging is disabled. When -O0 is specified, we do not do section merging. Though before this patch several sections were generated instead of single, what is useless. Differential revision: https://reviews.llvm.org/D27041 llvm-svn: 288151
2016-11-30 00:11:09 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: echo "SECTIONS { .data : {*(.data.*)} }" > %t0.script
# RUN: ld.lld %t.o -o %t0.out --script %t0.script
Replace MergeOutputSection with a synthetic section. With a synthetic merge section we can have, for example, a single .rodata section with stings, fixed sized constants and non merge constants. I can be simplified further by not setting Entsize, but that is probably better done is a followup patch. This should allow some cleanup in the linker script code now that every output section command maps to just one output section. llvm-svn: 294005
2017-02-03 21:06:18 +08:00
# RUN: llvm-objdump -s %t0.out | FileCheck %s
[ELF] - Disable emiting multiple output sections when merging is disabled. When -O0 is specified, we do not do section merging. Though before this patch several sections were generated instead of single, what is useless. Differential revision: https://reviews.llvm.org/D27041 llvm-svn: 288151
2016-11-30 00:11:09 +08:00
# RUN: ld.lld -O0 %t.o -o %t1.out --script %t0.script
Replace MergeOutputSection with a synthetic section. With a synthetic merge section we can have, for example, a single .rodata section with stings, fixed sized constants and non merge constants. I can be simplified further by not setting Entsize, but that is probably better done is a followup patch. This should allow some cleanup in the linker script code now that every output section command maps to just one output section. llvm-svn: 294005
2017-02-03 21:06:18 +08:00
# RUN: llvm-objdump -s %t1.out | FileCheck %s
# CHECK: Contents of section .data:
# CHECK-NEXT: 0000 01610003
[ELF] - Disable emiting multiple output sections when merging is disabled. When -O0 is specified, we do not do section merging. Though before this patch several sections were generated instead of single, what is useless. Differential revision: https://reviews.llvm.org/D27041 llvm-svn: 288151
2016-11-30 00:11:09 +08:00
.section .data.aw,"aw",@progbits
.byte 1
.section .data.ams,"aMS",@progbits,1
.asciz "a"
.section .data.am,"aM",@progbits,1
.byte 3