lld/test/wasm/tls-implicit.yaml

   1 # RUN: yaml2obj %s -o %t.o
   2 # RUN: wasm-ld --shared-memory -o %t.wasm %t.o
   3
   4 # Verify compatability with older object files that didn't mark individual
   5 # symbols as TLS.   In this case the symbol `bar` is being used in a TLS-only
   6 # relocation (R_WASM_MEMORY_ADDR_TLS_SLEB) but is not itself marked as TLS.
   7 # However, because it is defined in a section (`.mydata`) that *is* marked as
   8 # TLS we implicitly mark bar as TLS.
   9 #
  10 # We had a regression where llvm-13-generated object files were being rejected
  11 # with: "R_WASM_MEMORY_ADDR_TLS_SLEB cannot be used against non-TLS symbol"
  12 # This test verifies that this error is not triggered.
  13
  14 --- !WASM
  15 FileHeader:
  16   Version:         0x1
  17 Sections:
  18   - Type:            TYPE
  19     Signatures:
  20       - Index:           0
  21         ParamTypes:      []
  22         ReturnTypes:     []
  23   - Type:            IMPORT
  24     Imports:
  25       - Module:          env
  26         Field:           __linear_memory
  27         Kind:            MEMORY
  28         Memory:
  29           Minimum:         0x1
  30   - Type:            FUNCTION
  31     FunctionTypes:   [ 0 ]
  32   - Type:            DATACOUNT
  33     Count:           1
  34   - Type:            CODE
  35     Relocations:
  36       - Type:            R_WASM_MEMORY_ADDR_TLS_SLEB
  37         Index:           1
  38         Offset:          0x4
  39     Functions:
  40       - Index:           0
  41         Locals:          []
  42         Body:            4180808080001A0B
  43   - Type:            DATA
  44     Segments:
  45       - SectionOffset:   6
  46         InitFlags:       0
  47         Offset:
  48           Opcode:          I32_CONST
  49           Value:           0
  50         Content:         '00000000'
  51   - Type:            CUSTOM
  52     Name:            linking
  53     Version:         2
  54     SymbolTable:
  55       - Index:           0
  56         Kind:            FUNCTION
  57         Name:            _start
  58         Flags:           [  ]
  59         Function:        0
  60       - Index:           1
  61         Kind:            DATA
  62         Name:            bar
  63         Flags:           [  ]
  64         Segment:         0
  65         Size:            4
  66     SegmentInfo:
  67       - Index:           0
  68         Name:            .mydata
  69         Alignment:       0
  70         Flags:           [ TLS ]
  71   - Type:            CUSTOM
  72     Name:            target_features
  73     Features:
  74       - Prefix:        USED
  75         Name:          "atomics"
  76       - Prefix:        USED
  77         Name:          "bulk-memory"
  78 ...