re PR target/88839 ([SVE] Poor implementation of blend-like permutes)

re PR target/88839 ([SVE] Poor implementation of blend-like permutes)

2019-08-22  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
	    Richard Sandiford  <richard.sandiford@arm.com>

	PR target/88839
	* config/aarch64/aarch64.c (aarch64_evpc_sel): New function.
	(aarch64_expand_vec_perm_const_1): Call aarch64_evpc_sel.

testsuite/
	* gcc.target/aarch64/sve/sel_1.c: New test.
	* gcc.target/aarch64/sve/sel_2.c: Likewise.
	* gcc.target/aarch64/sve/sel_3.c: Likewise.
	* gcc.target/aarch64/sve/sel_4.c: Likewise.
	* gcc.target/aarch64/sve/sel_5.c: Likewise.
	* gcc.target/aarch64/sve/sel_6.c: Likewise.

Co-Authored-By: Richard Sandiford <richard.sandiford@arm.com>
From-SVN: r274810