test/Transforms/GlobalOpt/available_externally_global_ctors.ll

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.11.0"

; RUN: opt -S -passes=globalopt < %s | FileCheck %s

; Verify that the initialization of the available_externally global is not eliminated
; CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @foo_static_init, ptr null }]

@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @foo_static_init, ptr null }]
@foo_external = available_externally global ptr null

define internal void @foo_static_init() {
entry:
  store ptr @foo_impl, ptr @foo_external
  ret void
}

define internal void @foo_impl() {
entry:
  ret void
}