i386: unrecognized insn - "andhi3" pattern

[Uros Bizjak]

Hello!

    It looks there is a bug in "andhi3" patterns, probably in 
constraints to *andhi_1 pattern.  I would like to generate assembler 
instruction "andw     $XXXX, %ax". However, if I use following code in 
i386.c:
       rtx reg = gen_reg_rtx (HImode);
       ...
       emit_insn (gen_andhi3 (reg, reg, GEN_INT (0xf3ff)));

an error is produced:
--cut_here--
int.c:7: error: unrecognizable insn:
(insn 32 31 33 0 (parallel [
            (set (reg:HI 68)
                (and:HI (reg:HI 68)
                    (const_int 62463 [0xf3ff])))
            (clobber (reg:CC 17 flags))
        ]) -1 (nil)
    (expr_list:REG_UNUSED (reg:CC 17 flags)
        (expr_list:REG_UNUSED (reg:CC 17 flags)
            (nil))))
int.c:7: internal compiler error: in extract_insn, at recog.c:2037
--cut_here--

  There is no problem to generate "orw     $3072, %ax" with:
       rtx reg = gen_reg_rtx (HImode);
       ...
       emit_insn (gen_iorhi3 (reg, reg, GEN_INT (0x0400)));

I have noticed, that constraints are different for "*iorhi_1" and 
"*andhi_1". Is there everything OK with constraints for andhi_1 ? If 
constraints are OK, how to generate an "andw $XXXX, %ax" instruction?

Thanks for help,
Uros.