pr25309.ll
854 Bytes
; 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
}