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PATCH: rs6000: minor scheduler fixes


This removes a (harmless) use of "iu" for 750/7400
(these CPUs should use "iu2" throughout).  Also, move "mtjmpr"
to the correct functional unit for 750/7400/7450.
Bootstrapped and tested on darwin.

2001-12-05  Dale Johannesen   <dalej@apple.com>
         * config/rs6000/rs6000.md:  remove "iu" reference
         for 750/7400; move "mtjmpr" to correct FU for
         750/7400/7450.

===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/rs6000.md,v
retrieving revision 1.141
diff -u -d -b -w -c -3 -p -r1.141 rs6000.md
*** rs6000.md   2001/12/01 01:59:00     1.141
--- rs6000.md   2001/12/05 19:12:33
***************
*** 396,406 ****

   ; some extra cycles added by TARGET_SCHED_ADJUST_COST between compare
   ; and a following branch, to reduce mispredicts
- (define_function_unit "iu" 1 0
-   (and (eq_attr "type" "compare,delayed_compare")
-        (eq_attr "cpu" "ppc750,ppc7400"))
-   1 1)
-
   (define_function_unit "iu3" 3 0
     (and (eq_attr "type" "compare,delayed_compare")
          (eq_attr "cpu" "ppc7450"))
--- 411,416 ----
***************
*** 460,468 ****

   (define_function_unit "bpu" 1 0
     (and (eq_attr "type" "mtjmpr")
!        (eq_attr "cpu" 
"mpccore,ppc403,ppc601,ppc603,ppc604,ppc604e,ppc620,ppc630,ppc750,ppc7400,
ppc7450"))
     4 1)

   (define_function_unit "bpu" 1 0
     (and (eq_attr "type" "cr_logical")
          (eq_attr "cpu" "rios1,rios2,ppc604"))
--- 470,488 ----

   (define_function_unit "bpu" 1 0
     (and (eq_attr "type" "mtjmpr")
!        (eq_attr "cpu" 
"mpccore,ppc403,ppc601,ppc603,ppc604,ppc604e,ppc620,ppc630"))
     4 1)

+ (define_function_unit "sru" 1 0
+   (and (eq_attr "type" "mtjmpr")
+        (eq_attr "cpu" "ppc750,ppc7400"))
+   2 2)
+
+ (define_function_unit "imuldiv" 1 0
+   (and (eq_attr "type" "mtjmpr")
+        (eq_attr "cpu" "ppc7450"))
+   2 2)
+
   (define_function_unit "bpu" 1 0
     (and (eq_attr "type" "cr_logical")


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