lld/test/wasm/shared-memory-bss.s

   1 # RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
   2 # RUN: wasm-ld --experimental-pic -shared --shared-memory -o %t.so %t.o
   3 # RUN: llvm-objdump -d --no-show-raw-insn --no-leading-addr %t.so | FileCheck %s
   4 # RUN: obj2yaml %t.so | FileCheck %s --check-prefix=YAML
   5
   6 .section  .bss.foo,"",@
   7 .globl  foo
   8 .p2align  2
   9 foo:
  10   .int32  0
  11   .size foo, 4
  12
  13 .section  .data.bar,"",@
  14 .globl  bar
  15 .p2align  2
  16 bar:
  17   .int32  42
  18   .size bar, 4
  19
  20 .section  .custom_section.target_features,"",@
  21   .int8 2
  22   .int8 43
  23   .int8 7
  24   .ascii  "atomics"
  25   .int8 43
  26   .int8 11
  27   .ascii  "bulk-memory"
  28
  29 # Verify that there is only a single data segment and no bss
  30 # in the binary:
  31
  32 #      YAML:  - Type:            DATA{{$}}
  33 # YAML-NEXT:    Segments:
  34 # YAML-NEXT:      - SectionOffset:   3
  35 # YAML-NEXT:        InitFlags:       1
  36 # YAML-NEXT:        Content:         2A000000
  37 # YAML-NEXT:  - Type:            CUSTOM
  38
  39 # CHECK:      <__wasm_init_memory>:
  40 # CHECK-NEXT:    .local i32
  41 # CHECK-NEXT:            global.get      0
  42 # CHECK-NEXT:            i32.const       8
  43 # CHECK-NEXT:            i32.add
  44 # CHECK-NEXT:            local.set       0
  45 # CHECK-NEXT:            block
  46 # CHECK-NEXT:            block
  47 # CHECK-NEXT:            block
  48 # CHECK-NEXT:            local.get       0
  49 # CHECK-NEXT:            i32.const       0
  50 # CHECK-NEXT:            i32.const       1
  51 # CHECK-NEXT:            i32.atomic.rmw.cmpxchg  0
  52 # CHECK-NEXT:            br_table        {0, 1, 2}       # 1: down to label1
  53 # CHECK-NEXT:                                            # 2: down to label0
  54 # CHECK-NEXT:            end
  55
  56 # Regular data gets initialized with memory.init
  57
  58 # CHECK-NEXT:            i32.const       0
  59 # CHECK-NEXT:            global.get      0
  60 # CHECK-NEXT:            i32.add
  61 # CHECK-NEXT:            i32.const       0
  62 # CHECK-NEXT:            i32.const       4
  63 # CHECK-NEXT:            memory.init     0, 0
  64
  65 # BSS gets initialized with memory.fill
  66
  67 # CHECK-NEXT:            i32.const       4
  68 # CHECK-NEXT:            global.get      0
  69 # CHECK-NEXT:            i32.add
  70 # CHECK-NEXT:            i32.const       0
  71 # CHECK-NEXT:            i32.const       4
  72 # CHECK-NEXT:            memory.fill     0