diff options
Diffstat (limited to 'gcc/config/riscv/riscv.cc')
| -rw-r--r-- | gcc/config/riscv/riscv.cc | 44 |
1 files changed, 4 insertions, 40 deletions
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc index 3f111fa..69a8a50 100644 --- a/gcc/config/riscv/riscv.cc +++ b/gcc/config/riscv/riscv.cc @@ -9604,51 +9604,15 @@ riscv_dwarf_poly_indeterminate_value (unsigned int i, unsigned int *factor, return RISCV_DWARF_VLENB; } -/* Implement TARGET_ESTIMATED_POLY_VALUE. - Look into the tuning structure for an estimate. - KIND specifies the type of requested estimate: min, max or likely. - For cores with a known RVV width all three estimates are the same. - For generic RVV tuning we want to distinguish the maximum estimate from - the minimum and likely ones. - The likely estimate is the same as the minimum in that case to give a - conservative behavior of auto-vectorizing with RVV when it is a win - even for 128-bit RVV. - When RVV width information is available VAL.coeffs[1] is multiplied by - the number of VQ chunks over the initial Advanced SIMD 128 bits. */ +/* Implement TARGET_ESTIMATED_POLY_VALUE. */ static HOST_WIDE_INT riscv_estimated_poly_value (poly_int64 val, poly_value_estimate_kind kind = POLY_VALUE_LIKELY) { - unsigned int width_source = BITS_PER_RISCV_VECTOR.is_constant () - ? (unsigned int) BITS_PER_RISCV_VECTOR.to_constant () - : (unsigned int) RVV_SCALABLE; - - /* If there is no core-specific information then the minimum and likely - values are based on 128-bit vectors and the maximum is based on - the architectural maximum of 65536 bits. */ - if (width_source == RVV_SCALABLE) - switch (kind) - { - case POLY_VALUE_MIN: - case POLY_VALUE_LIKELY: - return val.coeffs[0]; - - case POLY_VALUE_MAX: - return val.coeffs[0] + val.coeffs[1] * 15; - } - - /* Allow BITS_PER_RISCV_VECTOR to be a bitmask of different VL, treating the - lowest as likely. This could be made more general if future -mtune - options need it to be. */ - if (kind == POLY_VALUE_MAX) - width_source = 1 << floor_log2 (width_source); - else - width_source = least_bit_hwi (width_source); - - /* If the core provides width information, use that. */ - HOST_WIDE_INT over_128 = width_source - 128; - return val.coeffs[0] + val.coeffs[1] * over_128 / 128; + if (TARGET_VECTOR) + return riscv_vector::estimated_poly_value (val, kind); + return default_estimated_poly_value (val, kind); } /* Return true if the vector misalignment factor is supported by the |