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* sh.md (movqi_i+1): New peephole.

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From-SVN: r17463
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J"orn Rennecke 1998-01-23 21:27:50 +00:00 • committed by Jeff Law
parent 2645224970
commit deeef0aca0
2 changed files with 17 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Fri Jan 23 23:28:59 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* sh.md (movqi_i+1): New peephole.
Fri Jan 23 15:39:42 1998 Jim Wilson <wilson@cygnus.com>
* Makefile.in: Remove remaining bytecode stuff.

14
gcc/config/sh/sh.md
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@ -162,7 +162,7 @@
;; align them when relaxing.
;; Loads have a latency of two.
;; However, call insn can have ;; a delay slot, so that we want one more
;; However, call insns can have a delay slot, so that we want one more
;; insn to be scheduled between the load of the function address and the call.
;; This is equivalent to a latency of three.
;; We cannot use a conflict list for this, because we need to distinguish
@ -1885,6 +1885,18 @@
lds %1,%0"
[(set_attr "type" "move,load,store,move,move,move")])
;; For Big-endian, reload now sometimes generates something like
;; (insn 2107 2104 2099 (set (reg:QI 3 r3)
;; (subreg:QI (mem:SI (reg:SI 0 r0)) 0)) -1 (nil)
;; (nil))
;; To avoid clutter in the movqi pattern, we express this as a peephole.
(define_peephole
[(set (match_operand:QI 0 "arith_reg_operand" "r")
(subreg:QI (match_operand:SI 1 "memory_operand" "m") 0))]
""
"mov.l %1,%0")
(define_expand "movqi"
[(set (match_operand:QI 0 "general_operand" "")
(match_operand:QI 1 "general_operand" ""))]