File: pr25309.ll

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llvm-toolchain-11 1%3A11.0.1-2
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; RUN: opt -globals-aa -gvn < %s -S | FileCheck %s

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

; @o and @m are initialized to @i, so they should not be classed as
; indirect globals referring only to allocation functions.
@o = internal global i32* @i, align 8
@m = internal global i32* @i, align 8
@i = internal global i32 0, align 4

; CHECK-LABEL: @f
define i1 @f() {
entry:
  %0 = load i32*, i32** @o, align 8
  store i32 0, i32* %0, align 4
  %1 = load volatile i32*, i32** @m, align 8
  store i32 1, i32* %1, align 4
  ; CHECK: %[[a:.*]] = load i32*
  %2 = load i32*, i32** @o, align 8
  ; CHECK: %[[b:.*]] = load i32, i32* %[[a]]
  %3 = load i32, i32* %2, align 4
  ; CHECK: %[[c:.*]] = icmp ne i32 %[[b]], 0
  %tobool.i = icmp ne i32 %3, 0
  ; CHECK: ret i1 %[[c]]
  ret i1 %tobool.i
}