Support 2-instruction vector shuffle for V4SI/V4SF in ix86_expand_vec_perm_const_1.

Support 2-instruction vector shuffle for V4SI/V4SF in ix86_expand_vec_perm_const_1.

2022-09-23  Hongtao Liu  <hongtao.liu@intel.com>
	    Liwei Xu  <liwei.xu@intel.com>

gcc/ChangeLog:

	PR target/53346
	* config/i386/i386-expand.cc (expand_vec_perm_shufps_shufps):
	New function.
	(ix86_expand_vec_perm_const_1): Insert
	expand_vec_perm_shufps_shufps at the end of 2-instruction
	expand sequence.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pr53346-1.c: New test.
	* gcc.target/i386/pr53346-2.c: New test.
	* gcc.target/i386/pr53346-3.c: New test.
	* gcc.target/i386/pr53346-4.c: New test.