xref: /aosp_15_r20/external/llvm/test/Analysis/BasicAA/2009-10-13-AtomicModRef.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Workertarget 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*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Workerdefine i8 @foo(i8* %ptr) {
5*9880d681SAndroid Build Coastguard Worker  %P = getelementptr i8, i8* %ptr, i32 0
6*9880d681SAndroid Build Coastguard Worker  %Q = getelementptr i8, i8* %ptr, i32 1
7*9880d681SAndroid Build Coastguard Worker; CHECK: getelementptr
8*9880d681SAndroid Build Coastguard Worker  %X = load i8, i8* %P
9*9880d681SAndroid Build Coastguard Worker  %Y = atomicrmw add i8* %Q, i8 1 monotonic
10*9880d681SAndroid Build Coastguard Worker  %Z = load i8, i8* %P
11*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: = load
12*9880d681SAndroid Build Coastguard Worker  %A = sub i8 %X, %Z
13*9880d681SAndroid Build Coastguard Worker  ret i8 %A
14*9880d681SAndroid Build Coastguard Worker; CHECK: ret i8 0
15*9880d681SAndroid Build Coastguard Worker}
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