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tm.texi (registers): Add entry for REGMODE_NATURAL_SIZE. 

* doc/tm.texi (registers) <Values in Registers>: Add
	entry for REGMODE_NATURAL_SIZE.

From-SVN: r79377
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Eric Botcazou 2004-03-12 11:53:15 +01:00 committed by Eric Botcazou
parent 42ba513004
commit ca0b6e3b47
2 changed files with 14 additions and 0 deletions
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@ -1,3 +1,8 @@
2004-03-12 Eric Botcazou <ebotcazou@libertysurf.fr>
* doc/tm.texi (registers) <Values in Registers>: Add
entry for REGMODE_NATURAL_SIZE.
2004-03-12 Richard Henderson <rth@redhat.com>
PR target/14547

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gcc/doc/tm.texi
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@ -2011,6 +2011,15 @@ definition of this macro is
@end smallexample
@end defmac
@defmac REGMODE_NATURAL_SIZE (@var{mode})
Define this macro if the natural size of registers that hold values
of mode @var{mode} is not the word size. It is a C expression that
should give the natural size in bytes for the specified mode. It is
used by the register allocator to try to optimize its results. This
happens for example on SPARC 64-bit where the natural size of
floating-point registers is still 32-bit.
@end defmac
@defmac HARD_REGNO_MODE_OK (@var{regno}, @var{mode})
A C expression that is nonzero if it is permissible to store a value
of mode @var{mode} in hard register number @var{regno} (or in several