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(ffs): Delete pattern containing nonexistant instruction. 

From-SVN: r4620
This commit is contained in:
Richard Kenner 1993-06-01 07:41:08 -04:00
parent 591d2ce85d
commit c225ba7b56
1 changed files with 13 additions and 16 deletions
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29
gcc/config/rs6000/rs6000.md
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@ -435,20 +435,6 @@
""
"neg %0,%1\;and %0,%0,%1\;cntlz %0,%0\;sfi %0,%0,32")
;; There is no need for (set (condition) (compare (ffs) 0)) because that
;; can be simplified to an ordinary comparison. A parallel set and compare
;; might be used, so include it.
(define_insn ""
[(set (match_operand:CC 2 "cc_reg_operand" "=x")
(compare:CC (ffs:SI (match_operand:SI 1 "register_operand" "r"))
(const_int 0)))
(set (match_operand:SI 0 "register_operand" "=&r")
(ffs:SI (match_dup 1)))]
""
"neg %0,%1\;and %0,%0,%1\;cntlz %0,%0\;sfi. %0,%0,32"
[(set_attr "type" "compare")])
(define_insn "mulsi3"
[(set (match_operand:SI 0 "gpc_reg_operand" "=r,r")
(mult:SI (match_operand:SI 1 "gpc_reg_operand" "%r,r")
@ -4650,7 +4636,18 @@
""
"cror 0,0,0")
;; Define the subtract-one-and-jump insns.
;; Define the subtract-one-and-jump insns, starting with the template
;; so loop.c knows what to generate.
(define_expand "decrement_and_branchsi"
[(parallel [(set (pc) (if_then_else (ne (match_operand:SI 0 "register_operand" "c")
(const_int 1))
(label_ref (match_operand 1 "" ""))
(pc)))
(set (match_dup 0) (plus:SI (match_dup 0) (const_int -1)))])]
""
"")
;; We need to be able to do this for any operand, including MEM, or we
;; will cause reload to blow up since we don't allow output reloads on
;; JUMP_INSNs.
@ -4670,7 +4667,7 @@
#
#")
;; Similar, but we can use GE since we have a REG_NOTES.
;; Similar, but we can use GE since we have a REG_NONNEG.
(define_insn ""
[(set (pc)
(if_then_else (ge (match_operand:SI 1 "register_operand" "0,*r,*r")