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1; RUN: opt < %s -passes=globalopt -S | FileCheck %s2 3; Test the evaluation of a store and a load via a bitcast, and check4; that globals are constant folded to the correct value.5 6; CHECK: @u = dso_local local_unnamed_addr global %union.A { ptr inttoptr (i64 12345 to ptr) }, align 87; CHECK: @l = dso_local local_unnamed_addr global i64 12345, align 88 9; Test derived from:10;11; union A {12; A(long long ll) : l(ll) {}13; ptr p;14; long long l;15; } u(12345);16;17; long long l = u.l;18 19target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"20target triple = "x86_64-unknown-linux-gnu"21 22%union.A = type { ptr }23 24$_ZN1AC2Ex = comdat any25 26@u = dso_local global %union.A zeroinitializer, align 827@l = dso_local global i64 0, align 828@llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_test.cpp, ptr null }]29 30define internal void @__cxx_global_var_init() section ".text.startup" {31 call void @_ZN1AC2Ex(ptr @u, i64 12345)32 ret void33}34 35define linkonce_odr dso_local void @_ZN1AC2Ex(ptr %this, i64 %ll) unnamed_addr comdat align 2 {36 store i64 %ll, ptr %this, align 837 ret void38}39 40define internal void @__cxx_global_var_init.1() section ".text.startup" {41 %1 = load i64, ptr @u, align 842 store i64 %1, ptr @l, align 843 ret void44}45 46define internal void @_GLOBAL__sub_I_test.cpp() section ".text.startup" {47 call void @__cxx_global_var_init()48 call void @__cxx_global_var_init.1()49 ret void50}51