Fix some testsuite failures for H8/SX multilibs where short branches where used…

Fix some testsuite failures for H8/SX multilibs where short branches where used when long branches were necessary.

	* config/h8300/h8300.md (H8/SX mult patterns): All H8/SX specific
	multiply patterns are 4 bytes long.

gcc/ChangeLog

+2020-04-28  Jeff Law  <law@redhat.com>
+
+	* config/h8300/h8300.md (H8/SX mult patterns): All H8/SX specific
+	multiply patterns are 4 bytes long.
+
 2020-04-28  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* config/arm/arm-cpus.in (cortex-m55): Remove +nofp option.

gcc/config/h8300/h8300.md

@@ -1146,7 +1146,7 @@
 		  (match_operand:HSI 2 "reg_or_nibble_operand" "r IP4>X")))]
   "TARGET_H8300SX"
   { return <MODE>mode == HImode ? "muls.w\\t%T2,%T0" : "muls.l\\t%S2,%S0"; }
-  [(set_attr "length" "2")
+  [(set_attr "length" "4")
    (set_attr "cc" "set_zn")])
 
 (define_insn "smulsi3_highpart"
@@ -1159,7 +1159,7 @@
 	  (const_int 32))))]
   "TARGET_H8300SXMUL"
   "muls/u.l\\t%S2,%S0"
-  [(set_attr "length" "2")
+  [(set_attr "length" "4")
    (set_attr "cc" "set_zn")])
 
 (define_insn "umulsi3_highpart"
@@ -1172,7 +1172,7 @@
 	    (const_int 32))))]
   "TARGET_H8300SX"
   "mulu/u.l\\t%S2,%S0"
-  [(set_attr "length" "2")
+  [(set_attr "length" "4")
    (set_attr "cc" "none_0hit")])
 
 ;; This is a "bridge" instruction.  Combine can't cram enough insns