[doc] Remove Solaris 10-only note about -mvect8-ret-in-mem

[doc] Remove Solaris 10-only note about -mvect8-ret-in-mem

[Rainer Orth]

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I noticed one more doc snippet that became obsolete with the removal of
Solaris 10 support, namely invoke.texi's description of
-mvect8-ret-in-mem.  I noticed that it mentions that the default of the
Solaris Studio compilers changed after Studio 12.1, but Studio 12.3 is
the first release to support Solaris 11, so I ripped out all the Solaris
specifics in that description since it's now VxWorks-only.

Tested with make doc/gcc.info and inspecting the result, installed on
mainline.

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


2019-05-25  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* doc/invoke.texi (x86 Options, -mvect8-ret-in-mem): Remove
	pre-Solaris 11 referene and most Studio compiler details.


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# HG changeset patch
# Parent  0268859a92383138d29f38168bb4ee57884c1bb5
Remove Solaris 10-only note about -mvect8-ret-in-mem

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -27802,12 +27802,10 @@ the system libraries and startup modules
 @item -mvect8-ret-in-mem
 @opindex mvect8-ret-in-mem
 Return 8-byte vectors in memory instead of MMX registers.  This is the
-default on Solaris@tie{}8 and 9 and VxWorks to match the ABI of the Sun
-Studio compilers until version 12.  Later compiler versions (starting
-with Studio 12 Update@tie{}1) follow the ABI used by other x86 targets, which
-is the default on Solaris@tie{}10 and later.  @emph{Only} use this option if
-you need to remain compatible with existing code produced by those
-previous compiler versions or older versions of GCC@.
+default on VxWorks to match the ABI of the Sun Studio compilers until
+version 12.  @emph{Only} use this option if you need to remain
+compatible with existing code produced by those previous compiler
+versions or older versions of GCC@.
 
 @item -mpc32
 @itemx -mpc64