forked from OSchip/llvm-project
83 lines
3.5 KiB
ArmAsm
83 lines
3.5 KiB
ArmAsm
# REQUIRES: x86
|
|
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
|
|
|
|
## First check that section "keep" is garbage collected without using KEEP
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .text : { *(.text) } \
|
|
# RUN: .keep : { *(.keep) } \
|
|
# RUN: .temp : { *(.temp) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=SECGC %s
|
|
# SECGC: Sections:
|
|
# SECGC-NEXT: Idx Name Size Address Type
|
|
# SECGC-NEXT: 0 00000000 0000000000000000
|
|
# SECGC-NEXT: 1 .text 00000007 0000000000000158 TEXT DATA
|
|
# SECGC-NEXT: 2 .temp 00000004 000000000000015f DATA
|
|
|
|
## Now apply KEEP command to preserve the section.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .text : { *(.text) } \
|
|
# RUN: .keep : { KEEP(*(.keep)) } \
|
|
# RUN: .temp : { *(.temp) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=SECNOGC %s
|
|
# SECNOGC: Sections:
|
|
# SECNOGC-NEXT: Idx Name Size Address Type
|
|
# SECNOGC-NEXT: 0 00000000 0000000000000000
|
|
# SECNOGC-NEXT: 1 .text 00000007 0000000000000158 TEXT DATA
|
|
# SECNOGC-NEXT: 2 .keep 00000004 000000000000015f DATA
|
|
# SECNOGC-NEXT: 3 .temp 00000004 0000000000000163 DATA
|
|
|
|
## A section name matches two entries in the SECTIONS directive. The
|
|
## first one doesn't have KEEP, the second one does. If section that have
|
|
## KEEP is the first in order then section is NOT collected.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .keep : { KEEP(*(.keep)) } \
|
|
# RUN: .nokeep : { *(.keep) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=KEEP-AT-FIRST %s
|
|
# KEEP-AT-FIRST: Sections:
|
|
# KEEP-AT-FIRST-NEXT: Idx Name Size Address Type
|
|
# KEEP-AT-FIRST-NEXT: 0 00000000 0000000000000000
|
|
# KEEP-AT-FIRST-NEXT: 1 .keep 00000004 0000000000000120 DATA
|
|
# KEEP-AT-FIRST-NEXT: 2 .temp 00000004 0000000000000124 DATA
|
|
# KEEP-AT-FIRST-NEXT: 3 .text 00000007 0000000000000128 TEXT DATA
|
|
# KEEP-AT-FIRST-NEXT: 4 .symtab 00000060 0000000000000000
|
|
# KEEP-AT-FIRST-NEXT: 5 .shstrtab 0000002d 0000000000000000
|
|
# KEEP-AT-FIRST-NEXT: 6 .strtab 00000012 0000000000000000
|
|
|
|
## The same, but now section without KEEP is at first place.
|
|
## It will be collected then.
|
|
## This test checks that lld behavior is equal to gold linker.
|
|
## ld.bfd has different behavior, it prevents the section .keep
|
|
## from collecting in this case either.
|
|
# RUN: echo "SECTIONS { \
|
|
# RUN: .nokeep : { *(.keep) } \
|
|
# RUN: .keep : { KEEP(*(.keep)) }}" > %t.script
|
|
# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
|
|
# RUN: llvm-objdump -section-headers %t1 | \
|
|
# RUN: FileCheck -check-prefix=KEEP-AT-SECOND %s
|
|
# KEEP-AT-SECOND: Sections:
|
|
# KEEP-AT-SECOND-NEXT: Idx Name Size Address Type
|
|
# KEEP-AT-SECOND-NEXT: 0 00000000 0000000000000000
|
|
# KEEP-AT-SECOND-NEXT: 1 .temp 00000004 0000000000000120 DATA
|
|
# KEEP-AT-SECOND-NEXT: 2 .text 00000007 0000000000000124 TEXT DATA
|
|
# KEEP-AT-SECOND-NEXT: 3 .symtab 00000048 0000000000000000
|
|
# KEEP-AT-SECOND-NEXT: 4 .shstrtab 00000027 0000000000000000
|
|
# KEEP-AT-SECOND-NEXT: 5 .strtab 0000000d 0000000000000000
|
|
|
|
.global _start
|
|
_start:
|
|
mov temp, %eax
|
|
|
|
.section .keep, "a"
|
|
keep:
|
|
.long 1
|
|
|
|
.section .temp, "a"
|
|
temp:
|
|
.long 2
|