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207
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1 # REQUIRES: x86
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2 # RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
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3
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4 ## Discard an unused .gcc_except_table in a COMDAT group or having SHF_LINK_ORDER
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5 ## if the associated text section is discarded.
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6
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7 # RUN: ld.lld --gc-sections --print-gc-sections -u _Z3foov %t.o -o /dev/null | \
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8 # RUN: FileCheck %s --implicit-check-not=.gcc_except_table
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150
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9
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207
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10 # CHECK: removing unused section {{.*}}.o:(.text._Z6comdatv)
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11 # CHECK-NEXT: removing unused section {{.*}}.o:(.text._Z9linkorderv)
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12 # CHECK-NEXT: removing unused section {{.*}}.o:(.gcc_except_table._Z6comdatv)
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13 # CHECK-NEXT: removing unused section {{.*}}.o:(.gcc_except_table._Z9linkorderv)
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14
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15 ## An unused non-group non-SHF_LINK_ORDER .gcc_except_table is not discarded.
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150
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16
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207
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17 # RUN: ld.lld --gc-sections --print-gc-sections -u _Z6comdatv -u _Z9linkorderv %t.o -o /dev/null | \
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18 # RUN: FileCheck /dev/null --implicit-check-not=.gcc_except_table
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19
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20 ## If the text sections are live, the .gcc_except_table sections are retained as
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21 ## well because they are referenced by .eh_frame pieces.
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22
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23 # RUN: ld.lld --gc-sections --print-gc-sections -u _Z3foov -u _Z6comdatv -u _Z9linkorderv %t.o -o /dev/null | \
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24 # RUN: FileCheck %s --check-prefix=KEEP
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25
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26 # KEEP-NOT: .gcc_except_table
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150
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27
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207
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28 .section .text._Z3foov,"ax",@progbits
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29 .globl _Z3foov
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30 _Z3foov:
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31 .cfi_startproc
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32 ret
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33 .cfi_lsda 0x1b,.Lexception0
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34 .cfi_endproc
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35
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36 .section .text._Z6comdatv,"axG",@progbits,_Z6comdatv,comdat
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37 .globl _Z6comdatv
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38 _Z6comdatv:
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39 .cfi_startproc
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40 ret
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41 .cfi_lsda 0x1b,.Lexception1
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42 .cfi_endproc
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150
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43
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207
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44 .section .text._Z9linkorderv,"ax",@progbits
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45 .globl _Z9linkorderv
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46 _Z9linkorderv:
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47 .cfi_startproc
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48 ret
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49 .cfi_lsda 0x1b,.Lexception2
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50 .cfi_endproc
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51
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52 .section .gcc_except_table._Z3foov,"a",@progbits
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53 .Lexception0:
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54 .byte 255
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55
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56 .section .gcc_except_table._Z6comdatv,"aG",@progbits,_Z6comdatv,comdat
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57 .Lexception1:
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58 .byte 255
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59
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60 .section .gcc_except_table._Z9linkorderv,"ao",@progbits,_Z9linkorderv
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61 .Lexception2:
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62 .byte 255
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