diff options
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/i386/x86-tune-costs.h | 16 |
2 files changed, 16 insertions, 8 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 97c7a10..57e31cb 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2018-01-02 Jan Hubicka <hubicka@ucw.cz> + + PR target/81616 + * x86-tune-costs.h (generic_cost): Reduce cost of FDIV 20->17, + cost of sqrt 20->14, DIVSS 18->13, DIVSD 32->17, SQRtSS 30->14 + and SQRTsD 58->18, cond_not_taken_branch_cost. 2->1. Increase + cond_taken_branch_cost 3->4. + 2018-01-01 Jakub Jelinek <jakub@redhat.com> PR tree-optimization/83581 diff --git a/gcc/config/i386/x86-tune-costs.h b/gcc/config/i386/x86-tune-costs.h index 477e478..eff7f7f 100644 --- a/gcc/config/i386/x86-tune-costs.h +++ b/gcc/config/i386/x86-tune-costs.h @@ -2293,10 +2293,10 @@ struct processor_costs generic_cost = { 3, /* Branch cost */ COSTS_N_INSNS (3), /* cost of FADD and FSUB insns. */ COSTS_N_INSNS (5), /* cost of FMUL instruction. */ - COSTS_N_INSNS (20), /* cost of FDIV instruction. */ + COSTS_N_INSNS (17), /* cost of FDIV instruction. */ COSTS_N_INSNS (1), /* cost of FABS instruction. */ COSTS_N_INSNS (1), /* cost of FCHS instruction. */ - COSTS_N_INSNS (20), /* cost of FSQRT instruction. */ + COSTS_N_INSNS (14), /* cost of FSQRT instruction. */ COSTS_N_INSNS (1), /* cost of cheap SSE instruction. */ COSTS_N_INSNS (3), /* cost of ADDSS/SD SUBSS/SD insns. */ @@ -2304,15 +2304,15 @@ struct processor_costs generic_cost = { COSTS_N_INSNS (5), /* cost of MULSD instruction. */ COSTS_N_INSNS (5), /* cost of FMA SS instruction. */ COSTS_N_INSNS (5), /* cost of FMA SD instruction. */ - COSTS_N_INSNS (18), /* cost of DIVSS instruction. */ - COSTS_N_INSNS (32), /* cost of DIVSD instruction. */ - COSTS_N_INSNS (30), /* cost of SQRTSS instruction. */ - COSTS_N_INSNS (58), /* cost of SQRTSD instruction. */ + COSTS_N_INSNS (13), /* cost of DIVSS instruction. */ + COSTS_N_INSNS (17), /* cost of DIVSD instruction. */ + COSTS_N_INSNS (14), /* cost of SQRTSS instruction. */ + COSTS_N_INSNS (18), /* cost of SQRTSD instruction. */ 1, 4, 3, 3, /* reassoc int, fp, vec_int, vec_fp. */ generic_memcpy, generic_memset, - COSTS_N_INSNS (3), /* cond_taken_branch_cost. */ - COSTS_N_INSNS (1), /* cond_not_taken_branch_cost. */ + COSTS_N_INSNS (4), /* cond_taken_branch_cost. */ + COSTS_N_INSNS (2), /* cond_not_taken_branch_cost. */ }; /* core_cost should produce code tuned for Core familly of CPUs. */ |