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| author | David S. Miller <davem@davemloft.net> | 2012-04-26 08:28:39 +0000 |
|---|---|---|
| committer | David S. Miller <davem@gcc.gnu.org> | 2012-04-26 01:28:39 -0700 |
| commit | 851634c76df50c39045cfa3f2aabe02d7ad5203b (patch) | |
| tree | af345724fb89a656af5b3911bcf46216b06db8bf /gcc/config/sparc/sparc.c | |
| parent | afa3ed855f0f1f76b1a428ff15a4ba7ef489c44b (diff) | |
| download | gcc-851634c76df50c39045cfa3f2aabe02d7ad5203b.tar.gz | |
Add sparc Niagara4 scheduling description and tweaks.
gcc/
* config/sparc/niagara4.md: New file.
* config/sparc/sparc.md: Include it.
* config/sparc/sparc.c (niagara4_costs): New processor costs.
(sparc_option_override): Use it.
(sparc_use_sched_lookahead): Return 2 for niagara4.
(sparc_issue_rate): Likewise.
From-SVN: r186864
Diffstat (limited to 'gcc/config/sparc/sparc.c')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 5c8e8686a18..11bd1fe90ff 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -374,6 +374,30 @@ struct processor_costs niagara3_costs = { 0, /* shift penalty */ }; +static const +struct processor_costs niagara4_costs = { + COSTS_N_INSNS (5), /* int load */ + COSTS_N_INSNS (5), /* int signed load */ + COSTS_N_INSNS (5), /* int zeroed load */ + COSTS_N_INSNS (5), /* float load */ + COSTS_N_INSNS (11), /* fmov, fneg, fabs */ + COSTS_N_INSNS (11), /* fadd, fsub */ + COSTS_N_INSNS (11), /* fcmp */ + COSTS_N_INSNS (11), /* fmov, fmovr */ + COSTS_N_INSNS (11), /* fmul */ + COSTS_N_INSNS (24), /* fdivs */ + COSTS_N_INSNS (37), /* fdivd */ + COSTS_N_INSNS (24), /* fsqrts */ + COSTS_N_INSNS (37), /* fsqrtd */ + COSTS_N_INSNS (12), /* imul */ + COSTS_N_INSNS (12), /* imulX */ + 0, /* imul bit factor */ + COSTS_N_INSNS (50), /* idiv, average of 41 - 60 cycle range */ + COSTS_N_INSNS (35), /* idivX, average of 26 - 44 cycle range */ + COSTS_N_INSNS (1), /* movcc/movr */ + 0, /* shift penalty */ +}; + static const struct processor_costs *sparc_costs = &cypress_costs; #ifdef HAVE_AS_RELAX_OPTION @@ -1157,9 +1181,11 @@ sparc_option_override (void) sparc_costs = &niagara2_costs; break; case PROCESSOR_NIAGARA3: - case PROCESSOR_NIAGARA4: sparc_costs = &niagara3_costs; break; + case PROCESSOR_NIAGARA4: + sparc_costs = &niagara4_costs; + break; case PROCESSOR_NATIVE: gcc_unreachable (); }; @@ -8890,9 +8916,10 @@ sparc_use_sched_lookahead (void) { if (sparc_cpu == PROCESSOR_NIAGARA || sparc_cpu == PROCESSOR_NIAGARA2 - || sparc_cpu == PROCESSOR_NIAGARA3 - || sparc_cpu == PROCESSOR_NIAGARA4) + || sparc_cpu == PROCESSOR_NIAGARA3) return 0; + if (sparc_cpu == PROCESSOR_NIAGARA4) + return 2; if (sparc_cpu == PROCESSOR_ULTRASPARC || sparc_cpu == PROCESSOR_ULTRASPARC3) return 4; @@ -8911,9 +8938,9 @@ sparc_issue_rate (void) case PROCESSOR_NIAGARA: case PROCESSOR_NIAGARA2: case PROCESSOR_NIAGARA3: - case PROCESSOR_NIAGARA4: default: return 1; + case PROCESSOR_NIAGARA4: case PROCESSOR_V9: /* Assume V9 processors are capable of at least dual-issue. */ return 2; |