This patch supports following MVE ACLE intrinsics with binary operands.

vcvtq_n_s16_f16, vcvtq_n_s32_f32, vcvtq_n_u16_f16, vcvtq_n_u32_f32, vcreateq_u8, vcreateq_u16, vcreateq_u32, vcreateq_u64, vcreateq_s8, vcreateq_s16, vcreateq_s32, vcreateq_s64, vshrq_n_s8, vshrq_n_s16, vshrq_n_s32, vshrq_n_u8, vshrq_n_u16, vshrq_n_u32.

Please refer to M-profile Vector Extension (MVE) intrinsics [1]  for more details.
[1] https://developer.arm.com/architectures/instruction-sets/simd-isas/helium/mve-intrinsics

In this patch new constraints "Rb" and "Rf" are added, which checks the constant is with in the range of 1 to 8 and 1 to 32 respectively.

Also a new predicates "mve_imm_8" and "mve_imm_32" are added, to check the the matching constraint Rb and Rf respectively.

2020-03-17  Andre Vieira  <andre.simoesdiasvieira@arm.com>
            Mihail Ionescu  <mihail.ionescu@arm.com>
            Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* config/arm/arm-builtins.c (BINOP_UNONE_UNONE_IMM_QUALIFIERS): Define
	qualifier for binary operands.
	(BINOP_UNONE_UNONE_UNONE_QUALIFIERS): Likewise.
	(BINOP_UNONE_NONE_IMM_QUALIFIERS): Likewise.
	* config/arm/arm_mve.h (vcvtq_n_s16_f16): Define macro.
	(vcvtq_n_s32_f32): Likewise.
	(vcvtq_n_u16_f16): Likewise.
	(vcvtq_n_u32_f32): Likewise.
	(vcreateq_u8): Likewise.
	(vcreateq_u16): Likewise.
	(vcreateq_u32): Likewise.
	(vcreateq_u64): Likewise.
	(vcreateq_s8): Likewise.
	(vcreateq_s16): Likewise.
	(vcreateq_s32): Likewise.
	(vcreateq_s64): Likewise.
	(vshrq_n_s8): Likewise.
	(vshrq_n_s16): Likewise.
	(vshrq_n_s32): Likewise.
	(vshrq_n_u8): Likewise.
	(vshrq_n_u16): Likewise.
	(vshrq_n_u32): Likewise.
	(__arm_vcreateq_u8): Define intrinsic.
	(__arm_vcreateq_u16): Likewise.
	(__arm_vcreateq_u32): Likewise.
	(__arm_vcreateq_u64): Likewise.
	(__arm_vcreateq_s8): Likewise.
	(__arm_vcreateq_s16): Likewise.
	(__arm_vcreateq_s32): Likewise.
	(__arm_vcreateq_s64): Likewise.
	(__arm_vshrq_n_s8): Likewise.
	(__arm_vshrq_n_s16): Likewise.
	(__arm_vshrq_n_s32): Likewise.
	(__arm_vshrq_n_u8): Likewise.
	(__arm_vshrq_n_u16): Likewise.
	(__arm_vshrq_n_u32): Likewise.
	(__arm_vcvtq_n_s16_f16): Likewise.
	(__arm_vcvtq_n_s32_f32): Likewise.
	(__arm_vcvtq_n_u16_f16): Likewise.
	(__arm_vcvtq_n_u32_f32): Likewise.
	(vshrq_n): Define polymorphic variant.
	* config/arm/arm_mve_builtins.def (BINOP_UNONE_UNONE_IMM_QUALIFIERS):
	Use it.
	(BINOP_UNONE_UNONE_UNONE_QUALIFIERS): Likewise.
	(BINOP_UNONE_NONE_IMM_QUALIFIERS): Likewise.
	* config/arm/constraints.md (Rb): Define constraint to check constant is
	in the range of 1 to 8.
	(Rf): Define constraint to check constant is in the range of 1 to 32.
	* config/arm/mve.md (mve_vcreateq_<supf><mode>): Define RTL pattern.
	(mve_vshrq_n_<supf><mode>): Likewise.
	(mve_vcvtq_n_from_f_<supf><mode>): Likewise.
	* config/arm/predicates.md (mve_imm_8): Define predicate to check
	the matching constraint Rb.
	(mve_imm_32): Define predicate to check the matching constraint Rf.

gcc/testsuite/ChangeLog:

2020-03-17  Andre Vieira  <andre.simoesdiasvieira@arm.com>
            Mihail Ionescu  <mihail.ionescu@arm.com>
            Srinath Parvathaneni  <srinath.parvathaneni@arm.com>

	* gcc.target/arm/mve/intrinsics/vcreateq_s16.c: New test.
	* gcc.target/arm/mve/intrinsics/vcreateq_s32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s64.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_s8.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u64.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcreateq_u8.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_n_s16_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_n_s32_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_n_u16_f16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vcvtq_n_u32_f32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_s16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_s32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_s8.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_u16.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_u32.c: Likewise.
	* gcc.target/arm/mve/intrinsics/vshrq_n_u8.c: Likewise.