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| author | Stan Cox <coxs@gnu.org> | 1997-01-31 21:10:10 +0000 |
|---|---|---|
| committer | Stan Cox <coxs@gnu.org> | 1997-01-31 21:10:10 +0000 |
| commit | 856b07a15774986e00506b65b891c494d7ef6be2 (patch) | |
| tree | 1fcd1f207b230ea3d7419ea77eac3315ebc259b1 /gcc | |
| parent | 36cf4bcf8646fb1413e6ed61f9f76b23274df643 (diff) | |
| download | gcc-856b07a15774986e00506b65b891c494d7ef6be2.zip gcc-856b07a15774986e00506b65b891c494d7ef6be2.tar.gz gcc-856b07a15774986e00506b65b891c494d7ef6be2.tar.bz2 | |
(pentiumpro_cost): Added new cost structure for pentiumpro.
From-SVN: r13571
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index a4591f0..85b422f 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -80,13 +80,23 @@ struct processor_costs i486_cost = { /* 486 specific costs */ struct processor_costs pentium_cost = { 1, /* cost of an add instruction */ 1, /* cost of a lea instruction */ - 3, /* variable shift costs */ + 4, /* variable shift costs */ 1, /* constant shift costs */ - 12, /* cost of starting a multiply */ - 1, /* cost of multiply per each bit set */ + 11, /* cost of starting a multiply */ + 0, /* cost of multiply per each bit set */ 25 /* cost of a divide/mod */ }; +struct processor_costs pentiumpro_cost = { + 1, /* cost of an add instruction */ + 1, /* cost of a lea instruction */ + 3, /* variable shift costs */ + 1, /* constant shift costs */ + 4, /* cost of starting a multiply */ + 0, /* cost of multiply per each bit set */ + 17 /* cost of a divide/mod */ +}; + struct processor_costs *ix86_cost = &pentium_cost; #define AT_BP(mode) (gen_rtx (MEM, (mode), frame_pointer_rtx)) @@ -182,8 +192,8 @@ override_options () {PROCESSOR_I486_STRING, PROCESSOR_I486, &i486_cost, 0, 0}, {PROCESSOR_I586_STRING, PROCESSOR_PENTIUM, &pentium_cost, 0, 0}, {PROCESSOR_PENTIUM_STRING, PROCESSOR_PENTIUM, &pentium_cost, 0, 0}, - {PROCESSOR_I686_STRING, PROCESSOR_PENTIUMPRO, &pentium_cost, 0, 0}, - {PROCESSOR_PENTIUMPRO_STRING, PROCESSOR_PENTIUMPRO, &pentium_cost, 0, 0}}; + {PROCESSOR_I686_STRING, PROCESSOR_PENTIUMPRO, &pentiumpro_cost, 0, 0}, + {PROCESSOR_PENTIUMPRO_STRING, PROCESSOR_PENTIUMPRO, &pentiumpro_cost, 0, 0}}; int ptt_size = sizeof (processor_target_table) / sizeof (struct ptt); @@ -246,6 +256,7 @@ override_options () if (! strcmp (ix86_cpu_string, processor_target_table[j].name)) { ix86_cpu = processor_target_table[j].processor; + ix86_cost = processor_target_table[j].cost; if (i > j && (int)ix86_arch >= (int)PROCESSOR_PENTIUMPRO) error ("-mcpu=%s does not support -march=%s", ix86_cpu_string, ix86_arch_string); |