; RUN: llc -filetype=obj -o %t.o %s
; RUN: wasm-ld %t.o -o %t.wasm
; RUN: obj2yaml %t.wasm | FileCheck %s
; RUN: wasm-ld --export=__wasm_call_ctors %t.o -o %t.export.wasm
; RUN: obj2yaml %t.export.wasm | FileCheck %s -check-prefix=EXPORT
; Test that we emit wrappers and call __wasm_call_ctor when not referenced.
target triple = "wasm32-unknown-unknown"
define hidden void @_start() {
entry:
ret void
}
define hidden void @func1() {
entry:
ret void
}
define hidden void @func2() {
entry:
ret void
}
define hidden i32 @__cxa_atexit(i32 %func, i32 %arg, i32 %dso_handle) {
ret i32 %func
}
@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [
{ i32, ptr, ptr } { i32 1, ptr @func1, ptr null }
]
@llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [
{ i32, ptr, ptr } { i32 1, ptr @func2, ptr null }
]
; Check that we have exactly the needed exports: `memory` because that's
; currently on by default, and `_start`, because that's the default entrypoint.
; CHECK: - Type: EXPORT
; CHECK-NEXT: Exports:
; CHECK-NEXT: - Name: memory
; CHECK-NEXT: Kind: MEMORY
; CHECK-NEXT: Index: 0
; CHECK-NEXT: - Name: _start
; CHECK-NEXT: Kind: FUNCTION
; CHECK-NEXT: Index: 7
; Check the body of `_start`'s command-export wrapper.
; CHECK: - Type: CODE
; CHECK: - Index: 7
; CHECK-NEXT: Locals: []
; CHECK-NEXT: Body: 100010010B
; Check the symbol table to ensure all the functions are here, and that
; index 7 above refers to the function we think it does.
; 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: _start
; CHECK-NEXT: - Index: 2
; CHECK-NEXT: Name: func1
; CHECK-NEXT: - Index: 3
; CHECK-NEXT: Name: func2
; CHECK-NEXT: - Index: 4
; CHECK-NEXT: Name: __cxa_atexit
; CHECK-NEXT: - Index: 5
; CHECK-NEXT: Name: .Lcall_dtors.1
; CHECK-NEXT: - Index: 6
; CHECK-NEXT: Name: .Lregister_call_dtors.1
; CHECK-NEXT: - Index: 7
; CHECK-NEXT: Name: _start.command_export
; EXPORT: __wasm_call_ctors
; EXPORT: func1
; EXPORT: func2
; EXPORT: __cxa_atexit
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