lld/test/wasm/pie.ll

; RUN: llc -relocation-model=pic -mattr=+mutable-globals -filetype=obj %s -o %t.o
; RUN: wasm-ld --no-gc-sections --experimental-pic -pie -o %t.wasm %t.o

target triple = "wasm32-unknown-emscripten"

@data = global i32 2, align 4
@data_external = external global i32
@indirect_func = local_unnamed_addr global i32 ()* @foo, align 4

@data_addr = local_unnamed_addr global i32* @data, align 4
@data_addr_external = local_unnamed_addr global i32* @data_external, align 4

define hidden i32 @foo() {
entry:
  ; To ensure we use __stack_pointer
  %ptr = alloca i32
  %0 = load i32, i32* @data, align 4
  %1 = load i32 ()*, i32 ()** @indirect_func, align 4
  call i32 %1()
  ret i32 %0
}

define default i32** @get_data_address() {
entry:
  ret i32** @data_addr_external
}

define void @_start() {
  call void @external_func()
  ret void
}

declare void @external_func()

;      CHECK: Sections:
; CHECK-NEXT:   - Type:            CUSTOM
; CHECK-NEXT:     Name:            dylink.0
; CHECK-NEXT:     MemorySize:      16
; CHECK-NEXT:     MemoryAlignment: 2
; CHECK-NEXT:     TableSize:       1
; CHECK-NEXT:     TableAlignment:  0
; CHECK-NEXT:     Needed:          []

; CHECK:        - Type:            IMPORT
; CHECK-NEXT:     Imports:
; CHECK-NEXT:       - Module:          env
; CHECK-NEXT:         Field:           __stack_pointer
; CHECK-NEXT:         Kind:            GLOBAL
; CHECK-NEXT:         GlobalType:      I32
; CHECK-NEXT:         GlobalMutable:   true
; CHECK-NEXT:       - Module:          env
; CHECK-NEXT:         Field:           __memory_base
; CHECK-NEXT:         Kind:            GLOBAL
; CHECK-NEXT:         GlobalType:      I32
; CHECK-NEXT:         GlobalMutable:   false
; CHECK-NEXT:       - Module:          env
; CHECK-NEXT:         Field:           __table_base
; CHECK-NEXT:         Kind:            GLOBAL
; CHECK-NEXT:         GlobalType:      I32
; CHECK-NEXT:         GlobalMutable:   false
; CHECK-NEXT:       - Module:          env
; CHECK-NEXT:         Field:           __indirect_function_table
; CHECK-NEXT:         Kind:            TABLE
; CHECK-NEXT:         Table:
; CHECK-NEXT:           Index:           0
; CHECK-NEXT:           ElemType:        FUNCREF
; CHECK-NEXT:           Limits:
; CHECK-NEXT:             Minimum:         0x1

; CHECK:        - Type:            START
; CHECK-NEXT:     StartFunction:   2

; CHECK:        - Type:            CUSTOM
; CHECK-NEXT:     Name:            name
; CHECK-NEXT:     FunctionNames:
; CHECK-NEXT:       - Index:           0
; CHECK-NEXT:         Name:            __wasm_call_ctors
; CHECK-NEXT:       - Index:           1
; CHECK-NEXT:         Name:            __wasm_apply_data_relocs
; CHECK-NEXT:       - Index:           2
; CHECK-NEXT:         Name:            __wasm_apply_global_relocs


; Run the same test with threading support.  In this mode
; we expect __wasm_init_memory and __wasm_apply_data_relocs
; to be generated along with __wasm_start as the start
; function.

; RUN: llc -relocation-model=pic -mattr=+mutable-globals,+atomics,+bulk-memory -filetype=obj %s -o %t.shmem.o
; RUN: wasm-ld --no-gc-sections --shared-memory --allow-undefined --experimental-pic -pie -o %t.shmem.wasm %t.shmem.o
; RUN: obj2yaml %t.shmem.wasm | FileCheck %s --check-prefix=SHMEM

; SHMEM:         - Type:            CODE
; SHMEM:           - Index:           6
; SHMEM-NEXT:        Locals:          []
; SHMEM-NEXT:        Body:            100310050B

; SHMEM:         FunctionNames:
; SHMEM-NEXT:      - Index:           0
; SHMEM-NEXT:        Name:            external_func
; SHMEM-NEXT:      - Index:           1
; SHMEM-NEXT:        Name:            __wasm_call_ctors
; SHMEM-NEXT:      - Index:           2
; SHMEM-NEXT:        Name:            __wasm_init_tls
; SHMEM-NEXT:      - Index:           3
; SHMEM-NEXT:        Name:            __wasm_init_memory
; SHMEM-NEXT:      - Index:           4
; SHMEM-NEXT:        Name:            __wasm_apply_data_relocs
; SHMEM-NEXT:      - Index:           5
; SHMEM-NEXT:        Name:            __wasm_apply_global_relocs
; SHMEM-NEXT:      - Index:           6
; SHMEM-NEXT:        Name:            __wasm_start
; SHMEM-NEXT:      - Index:           7
; SHMEM-NEXT:        Name:            foo
; SHMEM-NEXT:      - Index:           8
; SHMEM-NEXT:        Name:            get_data_address
; SHMEM-NEXT:      - Index:           9
; SHMEM-NEXT:        Name:            _start