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h8300.md: Update the comments at the beginning of the file.

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* config/h8300/h8300.md: Update the comments at the beginning
	of the file.

From-SVN: r49025
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Kazu Hirata 2002-01-21 00:34:29 +00:00 committed by Kazu Hirata
parent cbafacd198
commit ed863595de
2 changed files with 14 additions and 16 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-01-20 Kazu Hirata <kazu@hxi.com>
* config/h8300/h8300.md: Update the comments at the beginning
of the file.
2002-01-20 Kazu Hirata <kazu@hxi.com>
* config/i370/i370.c: Fix comment formatting.

25
gcc/config/h8300/h8300.md
View File

@ -22,22 +22,6 @@
;; the Free Software Foundation, 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;; The original PO technology requires these to be ordered by speed,
;; so that assigner will pick the fastest.
;; See file "rtl.def" for documentation on define_insn, match_*, et. al.
(define_attr "cpu" "h8300,h8300h"
(const (symbol_ref "cpu_type")))
;; Many logical operations should have "bit" variants if only one
;; bit is going to be operated on.
;; (and (logical op) (const_int X))
;; If const_int only specifies a few bits (like a single byte in a 4 byte
;; operation, then it's more efficient to only apply the and and logical_op
;; to the bits we care about.
;; Some of the extend instructions accept a general_operand_src, which
;; allows all the normal memory addressing modes. The length computations
;; don't take this into account. The lengths in the MD file should be
@ -62,6 +46,13 @@
;; ??? Implement remaining bit ops available on the h8300
;; ----------------------------------------------------------------------
;; ATTRIBUTES
;; ----------------------------------------------------------------------
(define_attr "cpu" "h8300,h8300h"
(const (symbol_ref "cpu_type")))
(define_attr "type" "branch,arith"
(const_string "arith"))
@ -90,6 +81,7 @@
(const_string "yes")))
;; Condition code settings.
;;
;; none - insn does not affect cc
;; none_0hit - insn does not affect cc but it does modify operand 0
;; This attribute is used to keep track of when operand 0 changes.
@ -98,6 +90,7 @@
;; set_zn - insn sets z,n to usable values; v,c are unknown.
;; compare - compare instruction
;; clobber - value of cc is unknown
(define_attr "cc" "none,none_0hit,set_znv,set_zn,compare,clobber"
(const_string "clobber"))