1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -gvn -S | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine i32 @main(i32** %p, i32 %x, i32 %y) { 4*9880d681SAndroid Build Coastguard Workerblock1: 5*9880d681SAndroid Build Coastguard Worker %cmp = icmp eq i32 %x, %y 6*9880d681SAndroid Build Coastguard Worker br i1 %cmp , label %block2, label %block3 7*9880d681SAndroid Build Coastguard Worker 8*9880d681SAndroid Build Coastguard Workerblock2: 9*9880d681SAndroid Build Coastguard Worker %a = load i32*, i32** %p 10*9880d681SAndroid Build Coastguard Worker br label %block4 11*9880d681SAndroid Build Coastguard Worker 12*9880d681SAndroid Build Coastguard Workerblock3: 13*9880d681SAndroid Build Coastguard Worker %b = load i32*, i32** %p 14*9880d681SAndroid Build Coastguard Worker br label %block4 15*9880d681SAndroid Build Coastguard Worker 16*9880d681SAndroid Build Coastguard Workerblock4: 17*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: %existingPHI = phi 18*9880d681SAndroid Build Coastguard Worker; CHECK: %DEAD = phi 19*9880d681SAndroid Build Coastguard Worker %existingPHI = phi i32* [ %a, %block2 ], [ %b, %block3 ] 20*9880d681SAndroid Build Coastguard Worker %DEAD = load i32*, i32** %p 21*9880d681SAndroid Build Coastguard Worker %c = load i32, i32* %DEAD 22*9880d681SAndroid Build Coastguard Worker %d = load i32, i32* %existingPHI 23*9880d681SAndroid Build Coastguard Worker %e = add i32 %c, %d 24*9880d681SAndroid Build Coastguard Worker ret i32 %e 25*9880d681SAndroid Build Coastguard Worker} 26