1*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -globals-aa -functionattrs < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; RUN: opt -S -O3 < %s | FileCheck %s 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; Apart from checking for the direct cause of the bug, we also check 5*9880d681SAndroid Build Coastguard Worker; if any problematic aliasing rules have accidentally snuck into -O3. 6*9880d681SAndroid Build Coastguard Worker; 7*9880d681SAndroid Build Coastguard Worker; Since the "abc" operand bundle is not a special operand bundle that 8*9880d681SAndroid Build Coastguard Worker; LLVM knows about, all of the stores and loads in @test below have to 9*9880d681SAndroid Build Coastguard Worker; stay. 10*9880d681SAndroid Build Coastguard Worker 11*9880d681SAndroid Build Coastguard Workerdeclare void @foo() readnone 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: define i8* @test(i8* %p) 14*9880d681SAndroid Build Coastguard Worker; CHECK: %a = alloca i8*, align 8 15*9880d681SAndroid Build Coastguard Worker; CHECK: store i8* %p, i8** %a, align 8 16*9880d681SAndroid Build Coastguard Worker; CHECK: call void @foo() [ "abc"(i8** %a) ] 17*9880d681SAndroid Build Coastguard Worker; CHECK: %reload = load i8*, i8** %a, align 8 18*9880d681SAndroid Build Coastguard Worker; CHECK: ret i8* %reload 19*9880d681SAndroid Build Coastguard Worker; CHECK: } 20*9880d681SAndroid Build Coastguard Worker 21*9880d681SAndroid Build Coastguard Workerdefine i8* @test(i8* %p) { 22*9880d681SAndroid Build Coastguard Worker %a = alloca i8*, align 8 23*9880d681SAndroid Build Coastguard Worker store i8* %p, i8** %a, align 8 24*9880d681SAndroid Build Coastguard Worker call void @foo() ["abc" (i8** %a)] 25*9880d681SAndroid Build Coastguard Worker %reload = load i8*, i8** %a, align 8 26*9880d681SAndroid Build Coastguard Worker ret i8* %reload 27*9880d681SAndroid Build Coastguard Worker} 28