combiner

[roy rosen]

In my port I get to such a situation:

(insn 60 59 61 4 a.c:65 (set (subreg:SI (reg:HI 129 [ __prephitmp_4 ]) 0)
        (zero_extract:SI (subreg:SI (reg/v:DI 138 [ v4hi1 ]) 4)
            (const_int 16 [0x10])
            (const_int 16 [0x10]))) 53 {extzv} (nil))

(insn 61 60 62 4 a.c:65 (set (reg:BI 159)
        (gtu:BI (reg:HI 129 [ __prephitmp_4 ])
            (reg/v:HI 143 [ usiThresh ]))) 94 {cmprr_hi_gtu} (nil))

The patterns for these are:

(define_insn "extzv"
  [(set (match_operand:SI 0 "register_operand" "=d")
        (zero_extract:SI (match_operand:SI 1 "register_operand" "d")
                         (match_operand:SI 2 "immediate_operand" "U06")
                         (match_operand:SI 3 "immediate_operand" "U06")))]
  ""
  "extractua\t %2, %3, %1, %0 %!"
)

and

(define_insn "cmprr_hi_<code>"
  [(set (match_operand:BI 0 "register_operand" "=c")
        (any_cond_rr:BI (match_operand:HI 1 "register_operand" "d")
                     (match_operand:HI 2 "register_operand" "d")))]
  ""
  "cmp<code> %2.L, %1.L, %0:%I0 %!"
)

I want the combiner to combine both insns since I have an intruction
which can compare from an HI partial register.
I am trying to write an insn pattern for that but the combiner does not use i.
I thought about something like:

(define_insn "cmprr_hi_<code>_1"
  [(set (match_operand:BI 0 "register_operand" "=c")
        (any_cond_rr:BI (zero_extract:SI (match_operand:DI 1
"register_operand" "d")
                         (const_int 16) (const_int 16))
                     (match_operand:HI 2 "register_operand" "d")))]
  ""
  "cmp<code> %2.L, %1.L, %0:%I0 %!"
)

but it does not work.
Can someone please help?

Thanks, Roy.