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* config/h8300/h8300.md: Tweak comments about peephole2's.

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From-SVN: r78657
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Kazu Hirata 2004-02-29 18:44:18 +00:00 • committed by Kazu Hirata
parent 2750f3f2fd
commit a207f649ad
2 changed files with 23 additions and 11 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2004-02-29 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md: Tweak comments about peephole2's.
2004-02-29 Waldek Hebisch <hebisch@math.uni.wroc.pl>
PR middle-end/14203

30
gcc/config/h8300/h8300.md
View file

@ -4176,12 +4176,12 @@
;; Transform
;;
;; cmp.w #1,r0
;; bhi .L1
;; bgt .L1
;;
;; into
;;
;; shar.w r0
;; bne .L1
;; bgt .L1
(define_peephole2
[(set (cc0)
@ -4223,12 +4223,12 @@
;; Transform
;;
;; cmp.w #255,r0
;; bhi .L1
;; bgt .L1
;;
;; into
;;
;; mov.b r0h,r0h
;; bne .L1
;; bgt .L1
(define_peephole2
[(set (cc0)
@ -4448,13 +4448,13 @@
;; Transform
;;
;; cmp.l #1,er0
;; bhi .L1
;; bgt .L1
;;
;; into
;;
;; mov.l er0,er1
;; shar.l er1
;; bne .L1
;; bgt .L1
;; We avoid this transformation if we see more than one copy of the
;; same compare insn immediately before this one.
@ -4503,12 +4503,12 @@
;; Transform
;;
;; cmp.l #1,er0
;; bhi .L1
;; bgt .L1
;;
;; into
;;
;; shar.l er0
;; bne .L1
;; bgt .L1
(define_peephole2
[(set (cc0)
@ -4550,13 +4550,13 @@
;; Transform
;;
;; cmp.l #15,er0
;; bhi .L1
;; bgt .L1
;;
;; into
;;
;; and #240,r0l
;; mov.l er0,er0
;; bne .L1
;; bgt .L1
(define_peephole2
[(set (cc0)
@ -4599,7 +4599,15 @@
}
operands[5] = GEN_INT (~INTVAL (operands[1]));")
;; Transform A <= 65535 to (A & 0xffff0000) == 0.
;; Transform
;;
;; cmp.l #65535,er0
;; bgt .L1
;;
;; into
;;
;; mov.l e0,e0
;; bgt .L1
(define_peephole2
[(set (cc0)