lld/test/wasm/externref.s

   1 # RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj -o %t.o %s
   2 # RUN: wasm-ld %t.o -o %t.wasm
   3 # RUN: obj2yaml %t.wasm | FileCheck %s
   4
   5 # Tests use of externref type, including storing it in a global
   6
   7 .globaltype my_global, externref
   8
   9 .globl read_externref
  10 read_externref:
  11   .functype read_externref () -> (externref)
  12   global.get my_global
  13   end_function
  14
  15 .globl write_externref
  16 write_externref:
  17   .functype write_externref (externref) -> ()
  18   local.get 0
  19   global.set my_global
  20   end_function
  21
  22 my_global:
  23
  24 .globl _start
  25 _start:
  26   .functype _start () -> ()
  27   call read_externref
  28   call write_externref
  29   end_function
  30
  31 #      CHECK:  - Type:            GLOBAL
  32 # CHECK-NEXT:    Globals:
  33 # CHECK-NEXT:      - Index:           0
  34 # CHECK-NEXT:        Type:            I32
  35 # CHECK-NEXT:        Mutable:         true
  36 # CHECK-NEXT:        InitExpr:
  37 # CHECK-NEXT:          Opcode:          I32_CONST
  38 # CHECK-NEXT:          Value:           66560
  39 # CHECK-NEXT:      - Index:           1
  40 # CHECK-NEXT:        Type:            EXTERNREF
  41 # CHECK-NEXT:        Mutable:         true
  42 # CHECK-NEXT:        InitExpr:
  43 # CHECK-NEXT:          Opcode:          REF_NULL
  44 # CHECK-NEXT:          Type:            EXTERNREF