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