reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
# REQUIRES: x86
# RUN: echo '.long 0; .comm common_uniq_0,4,4; .comm common_multiple,8,8' \
# RUN:   | llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %tfile0.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/common-filespec1.s -o %tfile1.o
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/common-filespec2.s -o %tfile2.o
# RUN: ld.lld -o %t1 --script %s %tfile0.o %tfile1.o %tfile2.o
# RUN: llvm-readobj -S --symbols %t1 | FileCheck %s

SECTIONS {
  .common_0 : { *file0.o(COMMON) }
  .common_1 : { *file1.o(COMMON) }
  .common_2 : { *file2.o(COMMON) }
}

# Make sure all 3 sections are allocated and they have sizes and alignments
# corresponding to the commons assigned to them
# CHECK:       Section {
# CHECK:         Index:
# CHECK:         Name: .common_0
# CHECK-NEXT:    Type: SHT_NOBITS
# CHECK-NEXT:    Flags [
# CHECK-NEXT:      SHF_ALLOC
# CHECK-NEXT:      SHF_WRITE
# CHECK-NEXT:    ]
# CHECK-NEXT:    Address: 0x4
# CHECK-NEXT:    Offset: 0x
# CHECK-NEXT:    Size: 4
# CHECK-NEXT:    Link: 0
# CHECK-NEXT:    Info: 0
# CHECK-NEXT:    AddressAlignment: 4
# CHECK-NEXT:    EntrySize: 0
# CHECK-NEXT:  }
# CHECK:       Section {
# CHECK:         Index:
# CHECK:         Name: .common_1
# CHECK-NEXT:    Type: SHT_NOBITS
# CHECK-NEXT:    Flags [
# CHECK-NEXT:      SHF_ALLOC
# CHECK-NEXT:      SHF_WRITE
# CHECK-NEXT:    ]
# CHECK-NEXT:    Address: 0x8
# CHECK-NEXT:    Offset: 0x
# CHECK-NEXT:    Size: 8
# CHECK-NEXT:    Link: 0
# CHECK-NEXT:    Info: 0
# CHECK-NEXT:    AddressAlignment: 8
# CHECK-NEXT:    EntrySize: 0
# CHECK-NEXT:  }
# CHECK:       Section {
# CHECK:         Index:
# CHECK:         Name: .common_2
# CHECK-NEXT:    Type: SHT_NOBITS
# CHECK-NEXT:    Flags [
# CHECK-NEXT:      SHF_ALLOC
# CHECK-NEXT:      SHF_WRITE
# CHECK-NEXT:    ]
# CHECK-NEXT:    Address: 0x10
# CHECK-NEXT:    Offset: 0x
# CHECK-NEXT:    Size: 48
# CHECK-NEXT:    Link: 0
# CHECK-NEXT:    Info: 0
# CHECK-NEXT:    AddressAlignment: 16
# CHECK-NEXT:    EntrySize: 0
# CHECK-NEXT:  }

# Commons with unique name in each file must be assigned to that file's section.
# For a common with multiple definitions, the largest one wins and it must be
# assigned to the section from the file which provided the winning def
# CHECK:       Symbol {
# CHECK:         Name: common_multiple
# CHECK-NEXT:    Value: 0x10
# CHECK-NEXT:    Size: 32
# CHECK-NEXT:    Binding: Global
# CHECK-NEXT:    Type: Object
# CHECK-NEXT:    Other: 0
# CHECK-NEXT:    Section: .common_2
# CHECK-NEXT:  }
# CHECK:       Symbol {
# CHECK:         Name: common_uniq_0
# CHECK-NEXT:    Value: 0x4
# CHECK-NEXT:    Size: 4
# CHECK-NEXT:    Binding: Global
# CHECK-NEXT:    Type: Object
# CHECK-NEXT:    Other: 0
# CHECK-NEXT:    Section: .common_0
# CHECK-NEXT:  }
# CHECK:       Symbol {
# CHECK:         Name: common_uniq_1
# CHECK-NEXT:    Value: 0x8
# CHECK-NEXT:    Size: 8
# CHECK-NEXT:    Binding: Global
# CHECK-NEXT:    Type: Object
# CHECK-NEXT:    Other: 0
# CHECK-NEXT:    Section: .common_1
# CHECK-NEXT:  }
# CHECK:       Symbol {
# CHECK:         Name: common_uniq_2
# CHECK-NEXT:    Value: 0x30
# CHECK-NEXT:    Size: 16
# CHECK-NEXT:    Binding: Global
# CHECK-NEXT:    Type: Object
# CHECK-NEXT:    Other: 0
# CHECK-NEXT:    Section: .common_2
# CHECK-NEXT:  }