diff options
| -rw-r--r-- | gcc/config/i386/i386.cc | 72 |
1 files changed, 44 insertions, 28 deletions
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index 498fac468b5..9ab24242b59 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -20463,36 +20463,52 @@ ix86_multiplication_cost (const struct processor_costs *cost, return ix86_vec_cost (mode, inner_mode == DFmode ? cost->mulsd : cost->mulss); else if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT) - { - /* vpmullq is used in this case. No emulation is needed. */ - if (TARGET_AVX512DQ) - return ix86_vec_cost (mode, cost->mulss); + switch (mode) + { + case V16QImode: + /* V*QImode is emulated with 4-11 insns. */ + if (TARGET_AVX512BW && TARGET_AVX512VL) + return ix86_vec_cost (mode, cost->mulss + cost->sse_op * 3); + else if (TARGET_XOP) + return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 5); + /* FALLTHRU */ + case V32QImode: + if (TARGET_AVX512BW && mode == V32QImode) + return ix86_vec_cost (mode, cost->mulss + cost->sse_op * 3); + else + return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 7); - /* V*QImode is emulated with 7-13 insns. */ - if (mode == V16QImode || mode == V32QImode) - { - int extra = 11; - if (TARGET_XOP && mode == V16QImode) - extra = 5; - else if (TARGET_SSSE3) - extra = 6; - return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * extra); - } - /* V*DImode is emulated with 5-8 insns. */ - else if (mode == V2DImode || mode == V4DImode) - { - if (TARGET_XOP && mode == V2DImode) - return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 3); - else - return ix86_vec_cost (mode, cost->mulss * 3 + cost->sse_op * 5); - } - /* Without sse4.1, we don't have PMULLD; it's emulated with 7 - insns, including two PMULUDQ. */ - else if (mode == V4SImode && !(TARGET_SSE4_1 || TARGET_AVX)) - return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 5); - else + case V64QImode: + return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 9); + + case V4SImode: + /* pmulld is used in this case. No emulation is needed. */ + if (TARGET_SSE4_1) + goto do_native; + /* V4SImode is emulated with 7 insns. */ + else + return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 5); + + case V2DImode: + case V4DImode: + /* vpmullq is used in this case. No emulation is needed. */ + if (TARGET_AVX512DQ && TARGET_AVX512VL) + goto do_native; + /* V*DImode is emulated with 6-8 insns. */ + else if (TARGET_XOP && mode == V2DImode) + return ix86_vec_cost (mode, cost->mulss * 2 + cost->sse_op * 4); + /* FALLTHRU */ + case V8DImode: + /* vpmullq is used in this case. No emulation is needed. */ + if (TARGET_AVX512DQ && mode == V8DImode) + goto do_native; + else + return ix86_vec_cost (mode, cost->mulss * 3 + cost->sse_op * 5); + + default: + do_native: return ix86_vec_cost (mode, cost->mulss); - } + } else return (cost->mult_init[MODE_INDEX (mode)] + cost->mult_bit * 7); } |