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rtl.texi (mem): Add documentation for alias-set argument to RTX `mem'.

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* rtl.texi (mem): Add documentation for alias-set argument
	to RTX `mem'.

From-SVN: r30589
This commit is contained in:
Diego Novillo 1999-11-19 17:23:37 +00:00 committed by Diego Novillo
parent e5315fad4d
commit 14592a41e8
2 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -8,6 +8,11 @@ Fri Nov 19 10:41:15 GMT 1999 Nathan Sidwell <nathan@acm.org>
(invalidate_skipped_set): Call it unconditionally.
(cse_set_around_loop): Likewise.
Thu Nov 18 17:29:34 MST 1999 Diego Novillo <dnovillo@cygnus.com>
* rtl.texi (mem): Add documentation for alias-set argument
to RTX `mem'.
Fri Nov 18 13:39:22 CET 1999 Jan Hubicka <hubicka@freesoft.cz>
* i386.h (struct_processor_costs): New fileds int_load, int_store,

6
gcc/rtl.texi
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@ -1293,10 +1293,12 @@ All instructions that do not jump alter the program counter implicitly
by incrementing it, but there is no need to mention this in the RTL.
@findex mem
@item (mem:@var{m} @var{addr})
@item (mem:@var{m} @var{addr} @var{alias})
This RTX represents a reference to main memory at an address
represented by the expression @var{addr}. @var{m} specifies how large
a unit of memory is accessed.
a unit of memory is accessed. @var{alias} specifies an alias set for the
reference. In general two items are in different alias sets if they cannot
reference the same memory address.
@findex addressof
@item (addressof:@var{m} @var{reg})