1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -instcombine -S > %t1.ll 2*9880d681SAndroid Build Coastguard Worker; RUN: grep udiv %t1.ll | count 2 3*9880d681SAndroid Build Coastguard Worker; RUN: grep zext %t1.ll | count 2 4*9880d681SAndroid Build Coastguard Worker; PR2274 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Worker; The udiv instructions shouldn't be optimized away, and the 7*9880d681SAndroid Build Coastguard Worker; sext instructions should be optimized to zext. 8*9880d681SAndroid Build Coastguard Worker 9*9880d681SAndroid Build Coastguard Workerdefine i64 @bar(i32 %x, i32 %g) nounwind { 10*9880d681SAndroid Build Coastguard Worker %y = lshr i32 %x, 30 11*9880d681SAndroid Build Coastguard Worker %r = udiv i32 %y, %g 12*9880d681SAndroid Build Coastguard Worker %z = sext i32 %r to i64 13*9880d681SAndroid Build Coastguard Worker ret i64 %z 14*9880d681SAndroid Build Coastguard Worker} 15*9880d681SAndroid Build Coastguard Workerdefine i64 @qux(i32 %x, i32 %v) nounwind { 16*9880d681SAndroid Build Coastguard Worker %y = lshr i32 %x, 31 17*9880d681SAndroid Build Coastguard Worker %r = udiv i32 %y, %v 18*9880d681SAndroid Build Coastguard Worker %z = sext i32 %r to i64 19*9880d681SAndroid Build Coastguard Worker ret i64 %z 20*9880d681SAndroid Build Coastguard Worker} 21