1*9880d681SAndroid Build Coastguard Worker; RUN: opt -instsimplify -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: @test 4*9880d681SAndroid Build Coastguard Workerdefine i1 @test(i8 %p, i8* %pq) { 5*9880d681SAndroid Build Coastguard Worker %q = load i8, i8* %pq, !range !0 ; %q is known nonzero; no known bits 6*9880d681SAndroid Build Coastguard Worker %1 = or i8 %p, 2 ; %1[1] = 1 7*9880d681SAndroid Build Coastguard Worker %2 = and i8 %1, 254 ; %2[0] = 0, %2[1] = 1 8*9880d681SAndroid Build Coastguard Worker %A = lshr i8 %2, 1 ; We should know that %A is nonzero. 9*9880d681SAndroid Build Coastguard Worker %x = icmp eq i8 %A, 0 10*9880d681SAndroid Build Coastguard Worker ; CHECK: ret i1 false 11*9880d681SAndroid Build Coastguard Worker ret i1 %x 12*9880d681SAndroid Build Coastguard Worker} 13*9880d681SAndroid Build Coastguard Worker 14*9880d681SAndroid Build Coastguard Worker!0 = !{ i8 1, i8 5 } 15