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md.texi (Modifiers): Document the '*' constraint for the user.

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* doc/md.texi (Modifiers): Document the '*' constraint for the
	user.

	* doc/md.texi (Machine Constraints): Add constraints for xstormy16.
	* doc/extend.texi (Function Attributes): 'interrupt' is valid
	for xstormy16 too.

From-SVN: r48823
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Geoffrey Keating 2002-01-13 23:23:40 +00:00 committed by Geoffrey Keating
parent 02a10130ff
commit 9f339ddefa
3 changed files with 81 additions and 5 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2002-01-13 Geoffrey Keating <geoffk@redhat.com>
* doc/md.texi (Modifiers): Document the '*' constraint for the
user.
* doc/md.texi (Machine Constraints): Add constraints for xstormy16.
* doc/extend.texi (Function Attributes): 'interrupt' is valid
for xstormy16 too.
2002-01-13 Richard Henderson <rth@redhat.com>
* reload.c (find_reloads): Use a hard reg destination as reload reg

8
gcc/doc/extend.texi
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@ -2283,10 +2283,10 @@ this option to work correctly.
@item interrupt
@cindex interrupt handler functions
Use this option on the ARM, AVR and M32R/D ports to indicate that the
specified function is an interrupt handler. The compiler will generate
function entry and exit sequences suitable for use in an interrupt
handler when this attribute is present.
Use this option on the ARM, AVR, M32R/D and Xstormy16 ports to indicate
that the specified function is an interrupt handler. The compiler will
generate function entry and exit sequences suitable for use in an
interrupt handler when this attribute is present.
Note, interrupt handlers for the H8/300, H8/300H and SH processors can
be specified via the @code{interrupt_handler} attribute.

69
gcc/doc/md.texi
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@ -1261,13 +1261,13 @@ Says that all following characters, up to the next comma, are to be
ignored as a constraint. They are significant only for choosing
register preferences.
@ifset INTERNALS
@cindex @samp{*} in constraint
@item *
Says that the following character should be ignored when choosing
register preferences. @samp{*} has no effect on the meaning of the
constraint as a constraint, and no effect on reloading.
@ifset INTERNALS
Here is an example: the 68000 has an instruction to sign-extend a
halfword in a data register, and can also sign-extend a value by
copying it into an address register. While either kind of register is
@ -2001,6 +2001,73 @@ Symbolic constant suitable for use with the @code{larl} instruction
@end table
@item Xstormy16---@file{stormy16.h}
@table @code
@item a
Register r0.
@item b
Register r1.
@item c
Register r2.
@item d
Register r8.
@item e
Registers r0 through r7.
@item t
Registers r0 and r1.
@item y
The carry register.
@item z
Registers r8 and r9.
@item I
A constant between 0 and 3 inclusive.
@item J
A constant that has exactly one bit set.
@item K
A constant that has exactly one bit clear.
@item L
A constant between 0 and 255 inclusive.
@item M
A constant between -255 and 0 inclusive.
@item N
A constant between -3 and 0 inclusive.
@item O
A constant between 1 and 4 inclusive.
@item P
A constant between -4 and -1 inclusive.
@item Q
A memory reference that is a stack push.
@item R
A memory reference that is a stack pop.
@item S
A memory reference that refers to an constant address of known value.
@item T
The register indicated by Rx (not implemented yet).
@item U
A constant that is not between 2 and 15 inclusive.
@end table
@end table
@ifset INTERNALS