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* sparc.md (ffsdi2): Disable. Simplify the expression as well.

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From-SVN: r19674
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Richard Henderson 1998-05-11 10:26:37 -07:00 committed by Richard Henderson
parent 28233641fc
commit 0f177d7c37
2 changed files with 15 additions and 8 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Mon May 11 17:24:27 1998 Richard Henderson <rth@cygnus.com>
* sparc.md (ffsdi2): Disable. Simplify the expression as well.
Mon May 11 13:30:44 1998 Jim Wilson <wilson@cygnus.com>
* varasm.c (make_decl_rtl): Disable April 1 change.

19
gcc/config/sparc/sparc.md
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@ -6123,14 +6123,17 @@ if (! TARGET_ARCH64)
;; ??? This should be a define expand, so that the extra instruction have
;; a chance of being optimized away.
(define_insn "ffsdi2"
[(set (match_operand:DI 0 "register_operand" "=&r")
(ffs:DI (match_operand:DI 1 "register_operand" "r")))
(clobber (match_scratch:DI 2 "=&r"))]
"TARGET_ARCH64"
"neg %1,%2\;not %2,%2\;xor %1,%2,%2\;popc %2,%0\;movrz %1,0,%0"
[(set_attr "type" "multi")
(set_attr "length" "5")])
;; Disabled because none of the UltraSparcs implement popc. The HAL R1
;; does, but no one uses that and we don't have a switch for it.
;
;(define_insn "ffsdi2"
; [(set (match_operand:DI 0 "register_operand" "=&r")
; (ffs:DI (match_operand:DI 1 "register_operand" "r")))
; (clobber (match_scratch:DI 2 "=&r"))]
; "TARGET_ARCH64"
; "neg %1,%2\;xnor %1,%2,%2\;popc %2,%0"
; [(set_attr "type" "multi")
; (set_attr "length" "3")])
;; Split up troublesome insns for better scheduling. */