llvm-project/lld/test/wasm/pie.ll

; RUN: llc -relocation-model=pic -filetype=obj %s -o %t.o
; RUN: wasm-ld --no-gc-sections --allow-undefined -pie -o %t.wasm %t.o
; RUN: obj2yaml %t.wasm | FileCheck %s

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() {
  ret void
}

; CHECK:        - Type:            IMPORT
; CHECK-NEXT:     Imports:
; CHECK-NEXT:       - Module:          env
; CHECK-NEXT:         Field:           __indirect_function_table
; CHECK-NEXT:         Kind:            TABLE
; CHECK-NEXT:         Table:
; CHECK-NEXT:           ElemType:        FUNCREF
; CHECK-NEXT:           Limits:
; CHECK-NEXT:             Initial:         0x00000001
; 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