1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=i386-apple-darwin -O0 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Workerdefine fastcc void @optimize_bit_field() nounwind { 4*9880d681SAndroid Build Coastguard Workerbb4: 5*9880d681SAndroid Build Coastguard Worker %a = load i32, i32* null ; <i32> [#uses=1] 6*9880d681SAndroid Build Coastguard Worker %s = load i32, i32* getelementptr (i32, i32* null, i32 1) ; <i32> [#uses=1] 7*9880d681SAndroid Build Coastguard Worker %z = load i32, i32* getelementptr (i32, i32* null, i32 2) ; <i32> [#uses=1] 8*9880d681SAndroid Build Coastguard Worker %r = bitcast i32 0 to i32 ; <i32> [#uses=1] 9*9880d681SAndroid Build Coastguard Worker %q = trunc i32 %z to i8 ; <i8> [#uses=1] 10*9880d681SAndroid Build Coastguard Worker %b = icmp eq i8 0, %q ; <i1> [#uses=1] 11*9880d681SAndroid Build Coastguard Worker br i1 %b, label %bb73, label %bb72 12*9880d681SAndroid Build Coastguard Worker 13*9880d681SAndroid Build Coastguard Workerbb72: ; preds = %bb4 14*9880d681SAndroid Build Coastguard Worker %f = tail call fastcc i32 @gen_lowpart(i32 %r, i32 %a) nounwind ; <i32> [#uses=1] 15*9880d681SAndroid Build Coastguard Worker br label %bb73 16*9880d681SAndroid Build Coastguard Worker 17*9880d681SAndroid Build Coastguard Workerbb73: ; preds = %bb72, %bb4 18*9880d681SAndroid Build Coastguard Worker %y = phi i32 [ %f, %bb72 ], [ %s, %bb4 ] ; <i32> [#uses=1] 19*9880d681SAndroid Build Coastguard Worker store i32 %y, i32* getelementptr (i32, i32* null, i32 3) 20*9880d681SAndroid Build Coastguard Worker unreachable 21*9880d681SAndroid Build Coastguard Worker} 22*9880d681SAndroid Build Coastguard Worker 23*9880d681SAndroid Build Coastguard Workerdeclare fastcc i32 @gen_lowpart(i32, i32) nounwind 24