llvm/test/Transforms/GlobalOpt/evaluate-bitcast-3.ll

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

; Test the evaluation of a load via a bitcast and a store via a GEP.
; Check that globals are constant folded to the correct value.

; CHECK: @u = dso_local local_unnamed_addr global %union.A { i8* inttoptr (i64 12345 to i8*) }, align 8
; CHECK: @l = dso_local local_unnamed_addr global i64 12345, align 8

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%union.A = type { i8* }

$_ZN1AC2Ex = comdat any

@u = dso_local global %union.A zeroinitializer, align 8
@l = dso_local global i64 0, align 8
@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_test.cpp, i8* null }]

define internal void @__cxx_global_var_init() section ".text.startup" {
  call void @_ZN1AC2Ex(%union.A* @u, i64 12345)
  ret void
}

define linkonce_odr dso_local void @_ZN1AC2Ex(%union.A* %this, i64 %ll) unnamed_addr comdat align 2 {
  %l = inttoptr i64 %ll to i8*
  %p = getelementptr inbounds %union.A, %union.A* %this, i64 0, i32 0
  store i8* %l, i8** %p
  ret void
}

define internal void @__cxx_global_var_init.1() section ".text.startup" {
  %1 = load i64, i64* bitcast (%union.A* @u to i64*), align 8
  store i64 %1, i64* @l, align 8
  ret void
}

define internal void @_GLOBAL__sub_I_test.cpp() section ".text.startup" {
  call void @__cxx_global_var_init()
  call void @__cxx_global_var_init.1()
  ret void
}