From: Michael Hayes Date: Fri, 2 Apr 1999 15:39:55 +0000 (+0000) Subject: tm.texi (USE_LOAD_POST_DECREMENT, [...]): Document. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6e01bd94f8b53772367ee1860fde5f5c06891873;p=gcc.git 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 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index af48014173b..2df336ddadf 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,20 @@ +Sat Apr 3 11:37:20 1999 Michael Hayes + + * 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. diff --git a/gcc/expr.c b/gcc/expr.c index 3c18b730038..d2ebdc31b73 100644 --- a/gcc/expr.c +++ b/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 diff --git a/gcc/rtl.h b/gcc/rtl.h index f6a87f25942..2661934dd18 100644 --- a/gcc/rtl.h +++ b/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)) diff --git a/gcc/tm.texi b/gcc/tm.texi index bed9e0a4ff5..8e6797a9e7f 100644 --- a/gcc/tm.texi +++ b/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