forked from OSchip/llvm-project
40 lines
1.2 KiB
ArmAsm
40 lines
1.2 KiB
ArmAsm
# REQUIRES: x86
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## SHF_GNU_RETAIN is a generic feature defined in the OS specific range. The
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## flag marks a section as a GC root.
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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# RUN: ld.lld --gc-sections --print-gc-sections %t.o -o %t | count 0
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# RUN: llvm-readobj -hS %t | FileCheck %s
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# RUN: ld.lld -r -e _start --gc-sections --print-gc-sections %t.o -o %t.ro | count 0
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# RUN: llvm-readobj -hS %t.ro | FileCheck %s
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# CHECK: Name: .retain
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# CHECK-NEXT: Type: SHT_PROGBITS
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# CHECK-NEXT: Flags [
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# CHECK-NEXT: SHF_ALLOC
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# CHECK-NEXT: SHF_GNU_RETAIN
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# CHECK-NEXT: ]
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# RUN: llvm-mc -filetype=obj -triple=x86_64 --defsym NONALLOC=1 %s -o %t1.o
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# RUN: not ld.lld --gc-sections %t1.o -o /dev/null 2>&1 | FileCheck %s --check-prefix=ERR
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# ERR: error: {{.*}}.o:(.nonalloc): sh_link points to discarded section {{.*}}.o:(.discard)
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.global _start
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_start:
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.section .retain,"aR",@progbits
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.quad .foo
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.section .foo,"a",@progbits
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.quad 0
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.ifdef NONALLOC
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.section .discard,"a",@progbits
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## With SHF_GNU_RETAIN, .nonalloc is retained while its linked-to section
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## .discard is discarded, so there will be an error.
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.section .nonalloc,"oR",@progbits,.discard
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.quad .text
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.endif
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