re PR target/88837 ([SVE] Poor vector construction code in VL-specific mode)

re PR target/88837 ([SVE] Poor vector construction code in VL-specific mode)

2019-06-03  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR target/88837
	* vector-builder.h (vector_builder::count_dups): New method.
	* config/aarch64/aarch64-protos.h (aarch64_expand_sve_vector_init):
	Declare prototype.
	* config/aarch64/aarch64/sve.md (aarch64_sve_rev64<mode>): Use @.
	(vec_init<mode><Vel>): New pattern.
	* config/aarch64/aarch64.c (emit_insr): New function.
	(aarch64_sve_expand_vector_init_handle_trailing_constants): Likewise.
	(aarch64_sve_expand_vector_init_insert_elems): Likewise.
	(aarch64_sve_expand_vector_init_handle_trailing_same_elem): Likewise.
	(aarch64_sve_expand_vector_init): Define two overloaded functions.

testsuite/
	* gcc.target/aarch64/sve/init_1.c: New test.
	* gcc.target/aarch64/sve/init_1_run.c: Likewise.
	* gcc.target/aarch64/sve/init_2.c: Likewise.
	* gcc.target/aarch64/sve/init_2_run.c: Likewise.
	* gcc.target/aarch64/sve/init_3.c: Likewise.
	* gcc.target/aarch64/sve/init_3_run.c: Likewise.
	* gcc.target/aarch64/sve/init_4.c: Likewise.
	* gcc.target/aarch64/sve/init_4_run.c: Likewise.
	* gcc.target/aarch64/sve/init_5.c: Likewise.
	* gcc.target/aarch64/sve/init_5_run.c: Likewise.
	* gcc.target/aarch64/sve/init_6.c: Likewise.
	* gcc.target/aarch64/sve/init_6_run.c: Likewise.
	* gcc.target/aarch64/sve/init_7.c: Likewise.
	* gcc.target/aarch64/sve/init_7_run.c: Likewise.
	* gcc.target/aarch64/sve/init_8.c: Likewise.
	* gcc.target/aarch64/sve/init_8_run.c: Likewise.
	* gcc.target/aarch64/sve/init_9.c: Likewise.
	* gcc.target/aarch64/sve/init_9_run.c: Likewise.
	* gcc.target/aarch64/sve/init_10.c: Likewise.
	* gcc.target/aarch64/sve/init_10_run.c: Likewise.
	* gcc.target/aarch64/sve/init_11.c: Likewise.
	* gcc.target/aarch64/sve/init_11_run.c: Likewise.
	* gcc.target/aarch64/sve/init_12.c: Likewise.
	* gcc.target/aarch64/sve/init_12_run.c: Likewise.

From-SVN: r271857