[PATCH doc] Remove documentation for PowerPC -maltivec={be,le}

[Pat Haugen <pthaugen@linux.ibm.com>]

The options were removed in May 2018 (r260109), but documentation was not updated.

Bootstrap on powerpc64le. Ok for trunk?

-Pat


2019-02-12  Pat Haugen  <pthaugen@us.ibm.com>

        * doc/invoke.texi (RS/6000 and PowerPC Options): Remove duplicate
        -maltivec. Delete -maltivec=be and -maltivec=le documentation.

Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi (revision 268784)
+++ gcc/doc/invoke.texi (working copy)
@@ -1085,7 +1085,7 @@ See RS/6000 and PowerPC Options.
 -mstrict-align  -mno-strict-align  -mrelocatable @gol
 -mno-relocatable  -mrelocatable-lib  -mno-relocatable-lib @gol
 -mtoc  -mno-toc  -mlittle  -mlittle-endian  -mbig  -mbig-endian @gol
--mdynamic-no-pic  -maltivec  -mswdiv  -msingle-pic-base @gol
+-mdynamic-no-pic  -mswdiv  -msingle-pic-base @gol
 -mprioritize-restricted-insns=@var{priority} @gol
 -msched-costly-dep=@var{dependence_type} @gol
 -minsert-sched-nops=@var{scheme} @gol
@@ -24088,40 +24088,14 @@ the AltiVec instruction set.  You may al
 @option{-mabi=altivec} to adjust the current ABI with AltiVec ABI
 enhancements.

-When @option{-maltivec} is used, rather than @option{-maltivec=le} or
-@option{-maltivec=be}, the element order for AltiVec intrinsics such
-as @code{vec_splat}, @code{vec_extract}, and @code{vec_insert}
+When @option{-maltivec} is used, the element order for AltiVec intrinsics
+such as @code{vec_splat}, @code{vec_extract}, and @code{vec_insert}
 match array element order corresponding to the endianness of the
 target.  That is, element zero identifies the leftmost element in a
 vector register when targeting a big-endian platform, and identifies
 the rightmost element in a vector register when targeting a
 little-endian platform.

-@item -maltivec=be
-@opindex maltivec=be
-Generate AltiVec instructions using big-endian element order,
-regardless of whether the target is big- or little-endian.  This is
-the default when targeting a big-endian platform.  Using this option
-is currently deprecated.  Support for this feature will be removed in
-GCC 9.
-
-The element order is used to interpret element numbers in AltiVec
-intrinsics such as @code{vec_splat}, @code{vec_extract}, and
-@code{vec_insert}.  By default, these match array element order
-corresponding to the endianness for the target.
-
-@item -maltivec=le
-@opindex maltivec=le
-Generate AltiVec instructions using little-endian element order,
-regardless of whether the target is big- or little-endian.  This is
-the default when targeting a little-endian platform.  This option is
-currently ignored when targeting a big-endian platform.
-
-The element order is used to interpret element numbers in AltiVec
-intrinsics such as @code{vec_splat}, @code{vec_extract}, and
-@code{vec_insert}.  By default, these match array element order
-corresponding to the endianness for the target.
-
 @item -mvrsave
 @itemx -mno-vrsave
 @opindex mvrsave