1; RUN: llc < %s -march=x86
2target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
3target triple = "x86_64-unknown-linux-gnu"
4
5@c0 = common global i8 0, align 1
6
7define void @func() nounwind uwtable {
8entry:
9  %0 = load i8* @c0, align 1
10  %tobool = icmp ne i8 %0, 0
11  %conv = zext i1 %tobool to i8
12  %storemerge = shl nuw nsw i8 %conv, %conv
13  store i8 %storemerge, i8* @c0, align 1
14  ret void
15}
16