compiler/sparc/arith: Fix SCs for FAST-EQL{,-C}/FIXNUM.

  * There's a KLUDGE in build-order.lisp-expr wherein failures
when building this file are ignored.

  * The failures are specifically an SC vs. arg-type mismatch for
the FAST-EQL/FIXNUM and FAST-EQL-C/FIXNUM VOPs.

  * Fix the mismatch by altering the VOP definitions to match what
the MIPS backend uses (since it doesn't have the failure).

  * And remove SPARC from the reader conditional on the KLUDGE.

Author: Alastair Bridgewater

build-order.lisp-expr

@@ -573,7 +573,7 @@
   ;; x compilation, for now we blithely ignore them and press on to more
   ;; x pressing problems. Someday, though, it would be nice to figure out
   ;; x what the problem is and fix it.
-  #!+(or ppc sparc) :ignore-failure-p)
+  #!+(or ppc) :ignore-failure-p)
  ("src/code/cross-modular"  :not-target)
  ("src/compiler/target/subprim")
 

src/compiler/sparc/arith.lisp

@@ -780,7 +780,7 @@
 ;;;
 
 (define-vop (fast-eql/fixnum fast-conditional)
-  (:args (x :scs (any-reg descriptor-reg zero))
+  (:args (x :scs (any-reg zero))
          (y :scs (any-reg zero)))
   (:arg-types tagged-num tagged-num)
   (:note "inline fixnum comparison")
@@ -791,11 +791,13 @@
     (inst nop)))
 ;;;
 (define-vop (generic-eql/fixnum fast-eql/fixnum)
+  (:args (x :scs (any-reg descriptor-reg))
+         (y :scs (any-reg)))
   (:arg-types * tagged-num)
   (:variant-cost 7))
 
 (define-vop (fast-eql-c/fixnum fast-conditional/fixnum)
-  (:args (x :scs (any-reg descriptor-reg zero)))
+  (:args (x :scs (any-reg zero)))
   (:arg-types tagged-num (:constant (signed-byte 11)))
   (:info target not-p y)
   (:translate eql)
@@ -805,6 +807,7 @@
     (inst nop)))
 ;;;
 (define-vop (generic-eql-c/fixnum fast-eql-c/fixnum)
+  (:args (x :scs (any-reg descriptor-reg)))
   (:arg-types * (:constant (signed-byte 11)))
   (:variant-cost 6))