[patch] Document new overflow arithmetics patterns

[Jakub Jelinek]

On Fri, Nov 20, 2015 at 11:12:06AM +0100, Eric Botcazou wrote:
> Hi,
> 
> this documents the new overflow arithmetics patterns added recently (addv4, 
> subv4, mulv4, umulv4, negv3) and only them, i.e. the old ones are still not.
> This also fixes the description of the cbranch and jump patterns, which were 
> referring to a label_ref instead of a code_label.
> 
> Tested with 'make doc' on x86-64/Linux, OK for mainline and 5 branch?
> 
> 
> 2015-11-20  Eric Botcazou  <ebotcazou@adacore.com>
> 
> 	* doc/md.texi (Standard Names): Move entry for addptr3 around,
> 	add entries for addv4, subv4, mulv4, umulv4 and negv3, fixes
> 	glitch in entries for cbranch4 and jump.

Ok, thanks.

> +@cindex @code{negv@var{m}3} instruction pattern
> +@item @samp{negv@var{m}3}
> +Like @code{neg@var{m}2}  but takes a @code{code_label} as operand 2 and
> +emits code to jump to it if signed overflow occurs during the negation.

Spurious space before "but".

	Jakub