1b87995f31
In most cases that means just not checking the address when we don't need it. For some tests it is easier to just set . to a known value. llvm-svn: 281976
81 lines
2.9 KiB
ArmAsm
81 lines
2.9 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
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## First check that section "keep" is garbage collected without using KEEP
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# RUN: echo "SECTIONS { \
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# RUN: .text : { *(.text) } \
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# RUN: .keep : { *(.keep) } \
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# RUN: .temp : { *(.temp) }}" > %t.script
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# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
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# RUN: llvm-objdump -section-headers %t1 | \
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# RUN: FileCheck -check-prefix=SECGC %s
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# SECGC: Sections:
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# SECGC-NEXT: Idx Name Size
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# SECGC-NEXT: 0 00000000
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# SECGC-NEXT: 1 .text 00000007
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# SECGC-NEXT: 2 .temp 00000004
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## Now apply KEEP command to preserve the section.
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# RUN: echo "SECTIONS { \
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# RUN: .text : { *(.text) } \
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# RUN: .keep : { KEEP(*(.keep)) } \
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# RUN: .temp : { *(.temp) }}" > %t.script
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# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
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# RUN: llvm-objdump -section-headers %t1 | \
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# RUN: FileCheck -check-prefix=SECNOGC %s
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# SECNOGC: Sections:
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# SECNOGC-NEXT: Idx Name Size
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# SECNOGC-NEXT: 0 00000000
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# SECNOGC-NEXT: 1 .text 00000007
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# SECNOGC-NEXT: 2 .keep 00000004
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# SECNOGC-NEXT: 3 .temp 00000004
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## A section name matches two entries in the SECTIONS directive. The
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## first one doesn't have KEEP, the second one does. If section that have
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## KEEP is the first in order then section is NOT collected.
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# RUN: echo "SECTIONS { \
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# RUN: .keep : { KEEP(*(.keep)) } \
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# RUN: .nokeep : { *(.keep) }}" > %t.script
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# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
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# RUN: llvm-objdump -section-headers %t1 | FileCheck -check-prefix=MIXED1 %s
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# MIXED1: Sections:
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# MIXED1-NEXT: Idx Name Size
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# MIXED1-NEXT: 0 00000000
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# MIXED1-NEXT: 1 .keep 00000004
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# MIXED1-NEXT: 2 .temp 00000004
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# MIXED1-NEXT: 3 .text 00000007
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# MIXED1-NEXT: 4 .symtab 00000060
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# MIXED1-NEXT: 5 .shstrtab 0000002d
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# MIXED1-NEXT: 6 .strtab 00000012
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## The same, but now section without KEEP is at first place.
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## gold and bfd linkers disagree here. gold collects .keep while
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## bfd keeps it. Our current behavior is compatible with bfd although
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## we can choose either way.
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# RUN: echo "SECTIONS { \
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# RUN: .nokeep : { *(.keep) } \
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# RUN: .keep : { KEEP(*(.keep)) }}" > %t.script
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# RUN: ld.lld --gc-sections -o %t1 --script %t.script %t
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# RUN: llvm-objdump -section-headers %t1 | FileCheck -check-prefix=MIXED2 %s
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# MIXED2: Sections:
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# MIXED2-NEXT: Idx Name Size
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# MIXED2-NEXT: 0 00000000
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# MIXED2-NEXT: 1 .nokeep 00000004
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# MIXED2-NEXT: 2 .temp 00000004
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# MIXED2-NEXT: 3 .text 00000007
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# MIXED2-NEXT: 4 .symtab 00000060
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# MIXED2-NEXT: 5 .shstrtab 0000002f
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# MIXED2-NEXT: 6 .strtab 00000012
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.global _start
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_start:
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mov temp, %eax
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.section .keep, "a"
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keep:
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.long 1
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.section .temp, "a"
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temp:
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.long 2
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