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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/103383] Microblaze bswaphi2
Date: Wed, 24 Nov 2021 03:14:50 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103383

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |microblaze
   Last reconfirmed|                            |2021-11-24
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this patch fixes the problem:
diff --git a/gcc/config/microblaze/microblaze.md
b/gcc/config/microblaze/microblaze.md
index 6d77752cbfd..ca4bd976a5c 100644
--- a/gcc/config/microblaze/microblaze.md
+++ b/gcc/config/microblaze/microblaze.md
@@ -372,7 +372,8 @@ (define_insn "bswaphi2"
   "TARGET_REORDER"
   "swapb %0, %1
    swaph %0, %0"
-)
+  [(set_attr "length"  "8")
+   (set_attr "type"     "no_delay_arith")])

 ;;----------------------------------------------------------------
 ;; Microblaze delay slot description


---- CUT ----
The delay slot description is right below bswaphi2 definition even:
(define_delay (eq_attr "type" "branch,call,jump")
  [(and (eq_attr "type"
"!branch,call,jump,icmp,multi,no_delay_arith,no_delay_load,no_delay_store,n=
o_delay_imul,no_delay_move,darith")
        (ior (not (match_test "microblaze_no_unsafe_delay"))
             (eq_attr "type" "!fadd,frsub,fmul,fdiv,fcmp,store,load")
             ))
  (nil) (nil)])

Or multi could be used instead of no_delay_arith.=