1; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s
2target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
3
4define i8 @foo(i8* %ptr) {
5  %P = getelementptr i8* %ptr, i32 0
6  %Q = getelementptr i8* %ptr, i32 1
7; CHECK: getelementptr
8  %X = load i8* %P
9  %Y = atomicrmw add i8* %Q, i8 1 monotonic
10  %Z = load i8* %P
11; CHECK-NOT: = load
12  %A = sub i8 %X, %Z
13  ret i8 %A
14; CHECK: ret i8 0
15}
16