lld/test/ELF/linkerscript/merge-output-sections.s

   1 # REQUIRES: x86
   2 # RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
   3
   4 ## SHF_MERGE sections within the same output section can be freely merged.
   5 # RUN: echo 'SECTIONS { .rodata : { *(.rodata.*) }}' > %t.script
   6 # RUN: ld.lld %t.o -T %t.script -o %t
   7 # RUN: llvm-readelf -x .rodata %t | FileCheck --check-prefix=SAME %s --implicit-check-not=section
   8
   9 # SAME:      section '.rodata':
  10 # SAME-NEXT: 0x00000000 01000200 0300
  11
  12 ## SHF_MERGE sections with different output sections cannot be merged.
  13 # RUN: echo 'SECTIONS { \
  14 # RUN:   .rodata.foo : { *(.rodata.foo) } \
  15 # RUN:   .rodata.bar : { *(.rodata.bar) } \
  16 # RUN: }' > %t2.script
  17 # RUN: ld.lld %t.o -T %t2.script -o %t2
  18 # RUN: llvm-readelf -x .rodata.foo -x .rodata.bar %t2 | FileCheck --check-prefix=DIFF %s --implicit-check-not=section
  19
  20 # DIFF:      section '.rodata.foo':
  21 # DIFF-NEXT: 0x00000000 01000200 0300
  22 # DIFF:      section '.rodata.bar':
  23 # DIFF-NEXT: 0x00000006 0100
  24
  25 .section .rodata.foo,"aM",@progbits,2,unique,0
  26 .short 1
  27 .short 2
  28 .section .rodata.foo,"aM",@progbits,2,unique,1
  29 .short 1
  30 .short 3
  31
  32 .section .rodata.bar,"aM",@progbits,2,unique,0
  33 .short 1
  34 .section .rodata.bar,"aM",@progbits,2,unique,1
  35 .short 1