| ; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s | |
| target 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" | |
| define i8 @foo(i8* %ptr) { | |
| %P = getelementptr i8, i8* %ptr, i32 0 | |
| %Q = getelementptr i8, i8* %ptr, i32 1 | |
| ; CHECK: getelementptr | |
| %X = load i8, i8* %P | |
| %Y = atomicrmw add i8* %Q, i8 1 monotonic | |
| %Z = load i8, i8* %P | |
| ; CHECK-NOT: = load | |
| %A = sub i8 %X, %Z | |
| ret i8 %A | |
| ; CHECK: ret i8 0 | |
| } |