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h8300.md (zero_extendhisi2 H8/300 variant): Correctly handle extending a CONST_INT. 

Fri Feb 12 13:20:52 1999  Jeffrey A Law  (law@cygnus.com)
        * h8300.md (zero_extendhisi2 H8/300 variant): Correctly handle
        extending a CONST_INT.
        * h8300.md (peephole for combining memrefs): Delete incorrect peephole.

From-SVN: r25168
This commit is contained in:
Jeffrey A Law 1999-02-12 12:25:44 +00:00 committed by Jeff Law
parent a6207a2b7e
commit 01d5caad02
2 changed files with 13 additions and 30 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
Fri Feb 12 13:20:52 1999 Jeffrey A Law (law@cygnus.com)
* h8300.md (zero_extendhisi2 H8/300 variant): Correctly handle
extending a CONST_INT.
* h8300.md (peephole for combining memrefs): Delete incorrect peephole.
Fri Feb 12 18:29:11 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* loop.c (loop_insn_first_p, biv_elimination_giv_has_0_offset):

36
gcc/config/h8300/h8300.md
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@ -1687,15 +1687,17 @@
"TARGET_H8300"
"")
;; %e prints the high part of a CONST_INT, not the low part. Arggh.
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=r,r")
(zero_extend:SI (match_operand:HI 1 "general_operand_src" "0,g>")))]
[(set (match_operand:SI 0 "register_operand" "=r,r,r")
(zero_extend:SI (match_operand:HI 1 "general_operand_src" "0,i,g>")))]
"TARGET_H8300"
"@
sub.w %e0,%e0
mov.w %f1,%f0\;sub.w %e0,%e0
mov.w %e1,%f0\;sub.w %e0,%e0"
[(set_attr "length" "2,4")
(set_attr "cc" "clobber,clobber")])
[(set_attr "length" "2,4,4")
(set_attr "cc" "clobber,clobber,clobber")])
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=r,r")
@ -2245,32 +2247,6 @@
;; Peepholes go at the end.
;; ----------------------------------------------
;; Notice when two byte moves in a row could be a word move.
(define_peephole
[(set (match_operand:QI 0 "register_operand" "=r")
(mem:QI (plus:HI (match_operand:HI 1 "register_operand" "r")
(match_operand:HI 2 "immediate_operand" "n"))))
(set (match_operand:QI 3 "register_operand" "=r")
(mem:QI (plus:HI (match_dup 1)
(match_operand:HI 4 "immediate_operand" "n"))))]
"(INTVAL(operands[2]) == INTVAL(operands[4])+1) && REGNO(operands[0]) +1 == REGNO(operands[3])"
"mov.w @(%u4,%T1),%T0"
[(set_attr "length" "6")
(set_attr "cc" "set_znv")])
(define_peephole
[(set (mem:QI (plus:HI (match_operand:HI 1 "register_operand" "r")
(match_operand:HI 2 "immediate_operand" "n")))
(match_operand:QI 0 "register_operand" "r"))
(set (mem:QI (plus:HI (match_dup 1)
(match_operand:HI 4 "immediate_operand" "n")))
(match_operand:QI 3 "register_operand" "r"))]
"(INTVAL(operands[2]) == INTVAL(operands[4])+1) && REGNO(operands[0]) +1 == REGNO(operands[3])"
"mov.w %T0,@(%u4,%T1)"
[(set_attr "length" "6")
(set_attr "cc" "set_znv")])
;; Notice a move which could be post incremented.
(define_peephole