2e1886ea06
-mtune=neoverse-512tvb sets the likely SVE vector length to 128 bits, but it also takes into account Neoverse V1, which is a 256-bit target. This patch adds this VF (VL) factor to aarch64_vec_op_count. gcc/ * config/aarch64/aarch64.c (aarch64_vec_op_count::m_vf_factor): New member variable. (aarch64_vec_op_count::aarch64_vec_op_count): Add a parameter for it. (aarch64_vec_op_count::vf_factor): New function. (aarch64_vector_costs::aarch64_vector_costs): When costing for neoverse-512tvb, pass a vf_factor of 2 for the Neoverse V1 version of an SVE loop. (aarch64_vector_costs::adjust_body_cost): Read the vf factor instead of hard-coding 2.
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