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Commit 6e01bd94 by Michael Hayes Committed by Michael Hayes
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tm.texi (USE_LOAD_POST_DECREMENT, [...]): Document. 

	* tm.texi (USE_LOAD_POST_DECREMENT, USE_LOAD_PRE_DECREMENT,
	USE_STORE_POST_DECREMENT, USE_STORE_PRE_DECREMENT): Document.
	(USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
	USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Fix documentation.
	* rtl.h	(USE_LOAD_POST_DECREMENT, USE_LOAD_PRE_DECREMENT,
	USE_STORE_POST_DECREMENT, USE_STORE_PRE_DECREMENT,
	USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
	USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Provide default
	definition.
	* expr.c: (USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
	USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Delete default
	definition.

From-SVN: r26134
parent 8f032717
Showing with 93 additions and 34 deletions
gcc/ChangeLog
Sat Apr 3 11:37:20 1999 Michael Hayes <m.hayes@elec.canterbury.ac.nz>
* tm.texi (USE_LOAD_POST_DECREMENT, USE_LOAD_PRE_DECREMENT,
USE_STORE_POST_DECREMENT, USE_STORE_PRE_DECREMENT): Document.
(USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Fix documentation.
* rtl.h (USE_LOAD_POST_DECREMENT, USE_LOAD_PRE_DECREMENT,
USE_STORE_POST_DECREMENT, USE_STORE_PRE_DECREMENT,
USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Provide default
definition.
* expr.c: (USE_LOAD_POST_INCREMENT, USE_LOAD_PRE_INCREMENT,
USE_STORE_POST_INCREMENT, USE_STORE_PRE_INCREMENT): Delete default
definition.
Fri Apr 2 16:03:05 1999 Jeffrey A Law (law@cygnus.com)
* fixinc.dgux, fixinc.interix, fixinc.irix, fixinc.ptx: Deleted.
......
gcc/expr.c
......@@ -1402,26 +1402,6 @@ convert_modes (mode, oldmode, x, unsignedp)
#define MOVE_MAX_PIECES MOVE_MAX
#endif
/* Some architectures do not have complete pre/post increment/decrement
instruction sets, or only move some modes efficiently. these macros
allow us to fine tune move_by_pieces for these targets. */
#ifndef USE_LOAD_POST_INCREMENT
#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
#endif
#ifndef USE_LOAD_PRE_DECREMENT
#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
#endif
#ifndef USE_STORE_POST_INCREMENT
#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
#endif
#ifndef USE_STORE_PRE_DECREMENT
#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
#endif
/* Generate several move instructions to copy LEN bytes
from block FROM to block TO. (These are MEM rtx's with BLKmode).
The caller must pass FROM and TO
......
gcc/rtl.h
......@@ -755,6 +755,44 @@ extern char *note_insn_name[];
#define HAVE_POST_DECREMENT 0
#endif
/* Some architectures do not have complete pre/post increment/decrement
instruction sets, or only move some modes efficiently. These macros
allow us to tune autoincrement generation. */
#ifndef USE_LOAD_POST_INCREMENT
#define USE_LOAD_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
#endif
#ifndef USE_LOAD_POST_DECREMENT
#define USE_LOAD_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
#endif
#ifndef USE_LOAD_PRE_INCREMENT
#define USE_LOAD_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
#endif
#ifndef USE_LOAD_PRE_DECREMENT
#define USE_LOAD_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
#endif
#ifndef USE_STORE_POST_INCREMENT
#define USE_STORE_POST_INCREMENT(MODE) HAVE_POST_INCREMENT
#endif
#ifndef USE_STORE_POST_DECREMENT
#define USE_STORE_POST_DECREMENT(MODE) HAVE_POST_DECREMENT
#endif
#ifndef USE_STORE_PRE_INCREMENT
#define USE_STORE_PRE_INCREMENT(MODE) HAVE_PRE_INCREMENT
#endif
#ifndef USE_STORE_PRE_DECREMENT
#define USE_STORE_PRE_DECREMENT(MODE) HAVE_PRE_DECREMENT
#endif
/* Accessors for RANGE_INFO. */
/* For RANGE_{START,END} notes return the RANGE_START note. */
#define RANGE_INFO_NOTE_START(INSN) (XEXP (INSN, 0))
......
gcc/tm.texi
......@@ -4777,37 +4777,61 @@ If you don't define this, a reasonable default is used.
@item MOVE_BY_PIECES_P (@var{size}, @var{alignment})
A C expression used to determine whether @code{move_by_pieces} will be used to
copy a chunk of memory, or whether some other block move mechanism
will be used. Defaults to 1 if @code{move_by_pieces_ninsns} returns less
will be used. Defaults to 1 if @code{move_by_pieces_ninsns} returns less
than @code{MOVE_RATIO}.
@findex MOVE_MAX_PIECES
@item MOVE_MAX_PIECES
A C expression used by @code{move_by_pieces} to determine the largest unit
a load or store used to copy memory is. Defaults to @code{MOVE_MAX}.
a load or store used to copy memory is. Defaults to @code{MOVE_MAX}.
@findex USE_LOAD_POST_INCREMENT
@item USE_LOAD_POST_INCREMENT (@var{mode})
A C expression used to determine whether a load postincrement is
a good thing for @code{move_by_pieces} to use for a given mode. Defaults
to the value of @code{HAVE_POST_INCREMENT}.
A C expression used to determine whether a load postincrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_POST_INCREMENT}.
@findex USE_LOAD_POST_DECREMENT
@item USE_LOAD_POST_DECREMENT (@var{mode})
A C expression used to determine whether a load postdecrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_POST_DECREMENT}.
@findex USE_LOAD_PRE_INCREMENT
@item USE_LOAD_PRE_INCREMENT (@var{mode})
A C expression used to determine whether a load preincrement is
a good thing for @code{move_by_pieces} to use for a given mode. Defaults
to the value of @code{HAVE_PRE_INCREMENT}.
A C expression used to determine whether a load preincrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_PRE_INCREMENT}.
@findex USE_LOAD_PRE_DECREMENT
@item USE_LOAD_PRE_DECREMENT (@var{mode})
A C expression used to determine whether a load predecrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_PRE_DECREMENT}.
@findex USE_STORE_POST_INCREMENT
@item USE_STORE_POST_INCREMENT (@var{mode})
A C expression used to determine whether a store postincrement is
a good thing for @code{move_by_pieces} to use for a given mode. Defaults
to the value of @code{HAVE_POST_INCREMENT}.
A C expression used to determine whether a store postincrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_POST_INCREMENT}.
@findex USE_STORE_POST_DECREMENT
@item USE_STORE_POST_DECREMENT (@var{mode})
A C expression used to determine whether a store postdeccrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_POST_DECREMENT}.
@findex USE_STORE_PRE_INCREMENT
@item USE_STORE_PRE_INCREMENT (@var{mode})
This macro is used to determine whether a store preincrement is
a good thing for @code{move_by_pieces} to use for a given mode. Defaults
to the value of @code{HAVE_PRE_INCREMENT}.
This macro is used to determine whether a store preincrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_PRE_INCREMENT}.
@findex USE_STORE_PRE_DECREMENT
@item USE_STORE_PRE_DECREMENT (@var{mode})
This macro is used to determine whether a store predecrement is a good
thing to use for a given mode. Defaults to the value of
@code{HAVE_PRE_DECREMENT}.
@findex NO_FUNCTION_CSE
@item NO_FUNCTION_CSE
......
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