re PR target/66866 (incorrect load address on manual vector shuffle)

re PR target/66866 (incorrect load address on manual vector shuffle)

	PR target/66866
	* config/i386/i386-protos.h (ix86_expand_pextr): New prototype.
	* config/i386/i386.c (ix86_expand_pextr): New function.
	(ix86_expand_pinsr): Handle V1TI and TI modes.  Call ix86_expand_pextr
	for non-lowpart subregs.
	* config/i386/i386.md (extzv<mode>): Expand with ix86_expand_pextr.
	(insv<mode>): Use SWI248 mode iterator.
	(insv<mode>_1): Ditto.

testsuite/ChangeLog:

	PR target/66866
	* g++.dg/pr66866.C: New test.

From-SVN: r225852