1*9880d681SAndroid Build Coastguard Worker; RUN: opt -instcombine -S < %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; This used to crash opt 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker@c = common global i32 0, align 4 6*9880d681SAndroid Build Coastguard Worker@b = common global i32 0, align 4 7*9880d681SAndroid Build Coastguard Worker@a = common global i16 0, align 2 8*9880d681SAndroid Build Coastguard Worker@d = common global i32 0, align 4 9*9880d681SAndroid Build Coastguard Worker 10*9880d681SAndroid Build Coastguard Workerdefine void @fn3() { 11*9880d681SAndroid Build Coastguard Worker; CHECK: @fn3 12*9880d681SAndroid Build Coastguard Workerbb: 13*9880d681SAndroid Build Coastguard Worker %tmp = load i32, i32* @c, align 4 14*9880d681SAndroid Build Coastguard Worker %tmp1 = icmp eq i32 %tmp, 0 15*9880d681SAndroid Build Coastguard Worker br i1 %tmp1, label %bb2, label %bb6 16*9880d681SAndroid Build Coastguard Worker 17*9880d681SAndroid Build Coastguard Workerbb2: ; preds = %bb 18*9880d681SAndroid Build Coastguard Worker %tmp3 = load i32, i32* @b, align 4 19*9880d681SAndroid Build Coastguard Worker %tmp.i = add nsw i32 255, %tmp3 20*9880d681SAndroid Build Coastguard Worker %tmp5 = icmp ugt i32 %tmp.i, 254 21*9880d681SAndroid Build Coastguard Worker br label %bb6 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerbb6: ; preds = %bb, %bb2 24*9880d681SAndroid Build Coastguard Worker %tmp7 = phi i1 [ true, %bb ], [ %tmp5, %bb2 ] 25*9880d681SAndroid Build Coastguard Worker %tmp8 = zext i1 %tmp7 to i32 26*9880d681SAndroid Build Coastguard Worker %tmp10 = icmp eq i32 %tmp8, 0 27*9880d681SAndroid Build Coastguard Worker %tmp12 = load i16, i16* @a, align 2 28*9880d681SAndroid Build Coastguard Worker %tmp14 = icmp ne i16 %tmp12, 0 29*9880d681SAndroid Build Coastguard Worker %tmp16 = select i1 %tmp10, i1 false, i1 %tmp14 30*9880d681SAndroid Build Coastguard Worker %tmp17 = zext i1 %tmp16 to i32 31*9880d681SAndroid Build Coastguard Worker store i32 %tmp17, i32* @d, align 4 32*9880d681SAndroid Build Coastguard Worker ret void 33*9880d681SAndroid Build Coastguard Worker} 34