diff options
| author | Jan Hubicka <hubicka@ucw.cz> | 2017-10-19 22:43:30 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2017-10-19 20:43:30 +0000 |
| commit | ef9eec0b599d533b58e29fe0c0bf6435e5368378 (patch) | |
| tree | 050865057e06fb19fc11b7ba4ebb8396ef48f50f /gcc | |
| parent | ef30ab837c42b9555b3fc290454a5c02cb65487a (diff) | |
| download | gcc-ef9eec0b599d533b58e29fe0c0bf6435e5368378.zip gcc-ef9eec0b599d533b58e29fe0c0bf6435e5368378.tar.gz gcc-ef9eec0b599d533b58e29fe0c0bf6435e5368378.tar.bz2 | |
x86-tune-costs.h (generic_cost, core_cost): Correct costs of x87 and SSE instructions.
* x86-tune-costs.h (generic_cost, core_cost): Correct costs
of x87 and SSE instructions.
From-SVN: r253911
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/i386/x86-tune-costs.h | 43 |
2 files changed, 26 insertions, 22 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 59bcbb4..d8c4d75 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2017-10-19 Jan Hubicka <hubicka@ucw.cz> + * x86-tune-costs.h (generic_cost, core_cost): Correct costs + of x87 and SSE instructions. + +2017-10-19 Jan Hubicka <hubicka@ucw.cz> + * asan.c (create_cond_insert_point): Do not update edge count. * auto-profile.c (afdo_propagate_edge): Update for edge count removal. (afdo_propagate_circuit): Likewise. diff --git a/gcc/config/i386/x86-tune-costs.h b/gcc/config/i386/x86-tune-costs.h index 6a482dd..52ec348 100644 --- a/gcc/config/i386/x86-tune-costs.h +++ b/gcc/config/i386/x86-tune-costs.h @@ -2196,8 +2196,7 @@ static stringop_algs generic_memset[2] = { static const struct processor_costs generic_cost = { COSTS_N_INSNS (1), /* cost of an add instruction */ - /* On all chips taken into consideration lea is 2 cycles and more. With - this cost however our current implementation of synth_mult results in + /* Setting cost to 2 makes our current implementation of synth_mult result in use of unnecessary temporary registers causing regression on several SPECfp benchmarks. */ COSTS_N_INSNS (1) + 1, /* cost of a lea instruction */ @@ -2246,23 +2245,23 @@ struct processor_costs generic_cost = { /* Benchmarks shows large regressions on K8 sixtrack benchmark when this value is increased to perhaps more appropriate value of 5. */ 3, /* Branch cost */ - COSTS_N_INSNS (8), /* cost of FADD and FSUB insns. */ - COSTS_N_INSNS (8), /* cost of FMUL instruction. */ + COSTS_N_INSNS (3), /* cost of FADD and FSUB insns. */ + COSTS_N_INSNS (3), /* cost of FMUL instruction. */ COSTS_N_INSNS (20), /* cost of FDIV instruction. */ - COSTS_N_INSNS (8), /* cost of FABS instruction. */ - COSTS_N_INSNS (8), /* cost of FCHS instruction. */ + COSTS_N_INSNS (1), /* cost of FABS instruction. */ + COSTS_N_INSNS (1), /* cost of FCHS instruction. */ COSTS_N_INSNS (40), /* cost of FSQRT instruction. */ - COSTS_N_INSNS (8), /* cost of cheap SSE instruction. */ - COSTS_N_INSNS (8), /* cost of ADDSS/SD SUBSS/SD insns. */ - COSTS_N_INSNS (8), /* cost of MULSS instruction. */ - COSTS_N_INSNS (8), /* cost of MULSD instruction. */ - COSTS_N_INSNS (8), /* cost of FMA SS instruction. */ - COSTS_N_INSNS (8), /* cost of FMA SD instruction. */ - COSTS_N_INSNS (20), /* cost of DIVSS instruction. */ - COSTS_N_INSNS (20), /* cost of DIVSD instruction. */ - COSTS_N_INSNS (40), /* cost of SQRTSS instruction. */ - COSTS_N_INSNS (40), /* cost of SQRTSD instruction. */ + COSTS_N_INSNS (1), /* cost of cheap SSE instruction. */ + COSTS_N_INSNS (3), /* cost of ADDSS/SD SUBSS/SD insns. */ + COSTS_N_INSNS (4), /* cost of MULSS instruction. */ + 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. */ 1, 2, 1, 1, /* reassoc int, fp, vec_int, vec_fp. */ generic_memcpy, generic_memset, @@ -2344,12 +2343,12 @@ struct processor_costs core_cost = { 6, /* number of parallel prefetches */ /* FIXME perhaps more appropriate value is 5. */ 3, /* Branch cost */ - COSTS_N_INSNS (8), /* cost of FADD and FSUB insns. */ - COSTS_N_INSNS (8), /* cost of FMUL instruction. */ - COSTS_N_INSNS (20), /* cost of FDIV instruction. */ - COSTS_N_INSNS (8), /* cost of FABS instruction. */ - COSTS_N_INSNS (8), /* cost of FCHS instruction. */ - COSTS_N_INSNS (40), /* cost of FSQRT instruction. */ + COSTS_N_INSNS (3), /* cost of FADD and FSUB insns. */ + COSTS_N_INSNS (5), /* cost of FMUL instruction. */ + COSTS_N_INSNS (24), /* cost of FDIV instruction. */ + COSTS_N_INSNS (1), /* cost of FABS instruction. */ + COSTS_N_INSNS (1), /* cost of FCHS instruction. */ + COSTS_N_INSNS (24), /* cost of FSQRT instruction. */ COSTS_N_INSNS (1), /* cost of cheap SSE instruction. */ COSTS_N_INSNS (3), /* cost of ADDSS/SD SUBSS/SD insns. */ |