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comparison src/cpu/x86/vm/vm_version_x86.cpp @ 2479:15c9a0e16269

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7035713: 3DNow Prefetch Instruction Support Summary: The upcoming processors from AMD are the first that support 3dnow prefetch without supporting the 3dnow instruction set. Reviewed-by: kvn Contributed-by: tom.deneau@amd.com
author kvn
date Mon, 11 Apr 2011 15:30:31 -0700
parents 1d1603768966
children 2a34a4fbc52c
comparison
equal deleted inserted replaced
2478:328926869b15 2479:15c9a0e16269
346 // HT processor could be installed on a system which doesn't support HT. 346 // HT processor could be installed on a system which doesn't support HT.
347 _cpuFeatures &= ~CPU_HT; 347 _cpuFeatures &= ~CPU_HT;
348 } 348 }
349 349
350 char buf[256]; 350 char buf[256];
351 jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s", 351 jio_snprintf(buf, sizeof(buf), "(%u cores per cpu, %u threads per core) family %d model %d stepping %d%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
352 cores_per_cpu(), threads_per_core(), 352 cores_per_cpu(), threads_per_core(),
353 cpu_family(), _model, _stepping, 353 cpu_family(), _model, _stepping,
354 (supports_cmov() ? ", cmov" : ""), 354 (supports_cmov() ? ", cmov" : ""),
355 (supports_cmpxchg8() ? ", cx8" : ""), 355 (supports_cmpxchg8() ? ", cx8" : ""),
356 (supports_fxsr() ? ", fxsr" : ""), 356 (supports_fxsr() ? ", fxsr" : ""),
361 (supports_ssse3()? ", ssse3": ""), 361 (supports_ssse3()? ", ssse3": ""),
362 (supports_sse4_1() ? ", sse4.1" : ""), 362 (supports_sse4_1() ? ", sse4.1" : ""),
363 (supports_sse4_2() ? ", sse4.2" : ""), 363 (supports_sse4_2() ? ", sse4.2" : ""),
364 (supports_popcnt() ? ", popcnt" : ""), 364 (supports_popcnt() ? ", popcnt" : ""),
365 (supports_mmx_ext() ? ", mmxext" : ""), 365 (supports_mmx_ext() ? ", mmxext" : ""),
366 (supports_3dnow() ? ", 3dnow" : ""), 366 (supports_3dnow_prefetch() ? ", 3dnowpref" : ""),
367 (supports_3dnow2() ? ", 3dnowext" : ""),
368 (supports_lzcnt() ? ", lzcnt": ""), 367 (supports_lzcnt() ? ", lzcnt": ""),
369 (supports_sse4a() ? ", sse4a": ""), 368 (supports_sse4a() ? ", sse4a": ""),
370 (supports_ht() ? ", ht": "")); 369 (supports_ht() ? ", ht": ""));
371 _features_str = strdup(buf); 370 _features_str = strdup(buf);
372 371
520 assert(0 <= AllocatePrefetchInstr && AllocatePrefetchInstr <= 3, "invalid value"); 519 assert(0 <= AllocatePrefetchInstr && AllocatePrefetchInstr <= 3, "invalid value");
521 520
522 // set valid Prefetch instruction 521 // set valid Prefetch instruction
523 if( ReadPrefetchInstr < 0 ) ReadPrefetchInstr = 0; 522 if( ReadPrefetchInstr < 0 ) ReadPrefetchInstr = 0;
524 if( ReadPrefetchInstr > 3 ) ReadPrefetchInstr = 3; 523 if( ReadPrefetchInstr > 3 ) ReadPrefetchInstr = 3;
525 if( ReadPrefetchInstr == 3 && !supports_3dnow() ) ReadPrefetchInstr = 0; 524 if( ReadPrefetchInstr == 3 && !supports_3dnow_prefetch() ) ReadPrefetchInstr = 0;
526 if( !supports_sse() && supports_3dnow() ) ReadPrefetchInstr = 3; 525 if( !supports_sse() && supports_3dnow_prefetch() ) ReadPrefetchInstr = 3;
527 526
528 if( AllocatePrefetchInstr < 0 ) AllocatePrefetchInstr = 0; 527 if( AllocatePrefetchInstr < 0 ) AllocatePrefetchInstr = 0;
529 if( AllocatePrefetchInstr > 3 ) AllocatePrefetchInstr = 3; 528 if( AllocatePrefetchInstr > 3 ) AllocatePrefetchInstr = 3;
530 if( AllocatePrefetchInstr == 3 && !supports_3dnow() ) AllocatePrefetchInstr=0; 529 if( AllocatePrefetchInstr == 3 && !supports_3dnow_prefetch() ) AllocatePrefetchInstr=0;
531 if( !supports_sse() && supports_3dnow() ) AllocatePrefetchInstr = 3; 530 if( !supports_sse() && supports_3dnow_prefetch() ) AllocatePrefetchInstr = 3;
532 531
533 // Allocation prefetch settings 532 // Allocation prefetch settings
534 intx cache_line_size = L1_data_cache_line_size(); 533 intx cache_line_size = L1_data_cache_line_size();
535 if( cache_line_size > AllocatePrefetchStepSize ) 534 if( cache_line_size > AllocatePrefetchStepSize )
536 AllocatePrefetchStepSize = cache_line_size; 535 AllocatePrefetchStepSize = cache_line_size;
574 if (PrintMiscellaneous && Verbose) { 573 if (PrintMiscellaneous && Verbose) {
575 tty->print_cr("Logical CPUs per core: %u", 574 tty->print_cr("Logical CPUs per core: %u",
576 logical_processors_per_package()); 575 logical_processors_per_package());
577 tty->print_cr("UseSSE=%d",UseSSE); 576 tty->print_cr("UseSSE=%d",UseSSE);
578 tty->print("Allocation: "); 577 tty->print("Allocation: ");
579 if (AllocatePrefetchStyle <= 0 || UseSSE == 0 && !supports_3dnow()) { 578 if (AllocatePrefetchStyle <= 0 || UseSSE == 0 && !supports_3dnow_prefetch()) {
580 tty->print_cr("no prefetching"); 579 tty->print_cr("no prefetching");
581 } else { 580 } else {
582 if (UseSSE == 0 && supports_3dnow()) { 581 if (UseSSE == 0 && supports_3dnow_prefetch()) {
583 tty->print("PREFETCHW"); 582 tty->print("PREFETCHW");
584 } else if (UseSSE >= 1) { 583 } else if (UseSSE >= 1) {
585 if (AllocatePrefetchInstr == 0) { 584 if (AllocatePrefetchInstr == 0) {
586 tty->print("PREFETCHNTA"); 585 tty->print("PREFETCHNTA");
587 } else if (AllocatePrefetchInstr == 1) { 586 } else if (AllocatePrefetchInstr == 1) {