1*9880d681SAndroid Build Coastguard Worker; RUN: opt -O3 -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Workertarget datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" 3*9880d681SAndroid Build Coastguard Workertarget triple = "aarch64" 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker@v = internal unnamed_addr global i32 0, align 4 6*9880d681SAndroid Build Coastguard Worker@p = common global i32* null, align 8 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Worker; Function Attrs: norecurse nounwind 9*9880d681SAndroid Build Coastguard Workerdefine void @f(i32 %n) { 10*9880d681SAndroid Build Coastguard Workerentry: 11*9880d681SAndroid Build Coastguard Worker %0 = load i32, i32* @v, align 4 12*9880d681SAndroid Build Coastguard Worker %inc = add nsw i32 %0, 1 13*9880d681SAndroid Build Coastguard Worker store i32 %inc, i32* @v, align 4 14*9880d681SAndroid Build Coastguard Worker %1 = load i32*, i32** @p, align 8 15*9880d681SAndroid Build Coastguard Worker store i32 %n, i32* %1, align 4 16*9880d681SAndroid Build Coastguard Worker %2 = load i32, i32* @v, align 4 17*9880d681SAndroid Build Coastguard Worker %inc1 = add nsw i32 %2, 1 18*9880d681SAndroid Build Coastguard Worker store i32 %inc1, i32* @v, align 4 19*9880d681SAndroid Build Coastguard Worker ret void 20*9880d681SAndroid Build Coastguard Worker} 21*9880d681SAndroid Build Coastguard Worker 22*9880d681SAndroid Build Coastguard Worker; check variable v is loaded only once after optimization, which should be 23*9880d681SAndroid Build Coastguard Worker; prove that globalsAA survives until the optimization that can use it to 24*9880d681SAndroid Build Coastguard Worker; optimize away the duplicate load/stores on variable v. 25*9880d681SAndroid Build Coastguard Worker; CHECK: load i32, i32* @v, align 4 26*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: load i32, i32* @v, align 4 27