Detect EXT patterns to vec_perm_const, use for EXT intrinsics.
(part 2, fix ICE at -O0)

	* config/aarch64/aarch64.c (aarch64_evpc_ext): allow and handle
	location == 0.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211177 138bc75d-0d04-0410-961f-82ee72b054a4
	PR c++/61020
	* varpool.c (ctor_for_folding): Handle uninitialized vtables.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211178 138bc75d-0d04-0410-961f-82ee72b054a4