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comparison src/cpu/x86/vm/vm_version_x86.hpp @ 643:c771b7f43bbf

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6378821: bitCount() should use POPC on SPARC processors and AMD+10h Summary: bitCount() should use POPC on SPARC processors where POPC is implemented directly in hardware. Reviewed-by: kvn, never
author twisti
date Fri, 13 Mar 2009 11:35:17 -0700
parents 22e09c0f4b47
children 93c14e5562c4
comparison
equal deleted inserted replaced
642:660978a2a31a 643:c771b7f43bbf
68 cmpxchg16: 1, 68 cmpxchg16: 1,
69 : 4, 69 : 4,
70 dca : 1, 70 dca : 1,
71 sse4_1 : 1, 71 sse4_1 : 1,
72 sse4_2 : 1, 72 sse4_2 : 1,
73 : 11; 73 : 2,
74 popcnt : 1,
75 : 8;
74 } bits; 76 } bits;
75 }; 77 };
76 78
77 union StdCpuid1Edx { 79 union StdCpuid1Edx {
78 uint32_t value; 80 uint32_t value;
177 CPU_SSE2 = (1 << 7), 179 CPU_SSE2 = (1 << 7),
178 CPU_SSE3 = (1 << 8), // SSE3 comes from cpuid 1 (ECX) 180 CPU_SSE3 = (1 << 8), // SSE3 comes from cpuid 1 (ECX)
179 CPU_SSSE3 = (1 << 9), 181 CPU_SSSE3 = (1 << 9),
180 CPU_SSE4A = (1 << 10), 182 CPU_SSE4A = (1 << 10),
181 CPU_SSE4_1 = (1 << 11), 183 CPU_SSE4_1 = (1 << 11),
182 CPU_SSE4_2 = (1 << 12) 184 CPU_SSE4_2 = (1 << 12),
185 CPU_POPCNT = (1 << 13)
183 } cpuFeatureFlags; 186 } cpuFeatureFlags;
184 187
185 // cpuid information block. All info derived from executing cpuid with 188 // cpuid information block. All info derived from executing cpuid with
186 // various function numbers is stored here. Intel and AMD info is 189 // various function numbers is stored here. Intel and AMD info is
187 // merged in this block: accessor methods disentangle it. 190 // merged in this block: accessor methods disentangle it.
288 result |= CPU_SSE4A; 291 result |= CPU_SSE4A;
289 if (_cpuid_info.std_cpuid1_ecx.bits.sse4_1 != 0) 292 if (_cpuid_info.std_cpuid1_ecx.bits.sse4_1 != 0)
290 result |= CPU_SSE4_1; 293 result |= CPU_SSE4_1;
291 if (_cpuid_info.std_cpuid1_ecx.bits.sse4_2 != 0) 294 if (_cpuid_info.std_cpuid1_ecx.bits.sse4_2 != 0)
292 result |= CPU_SSE4_2; 295 result |= CPU_SSE4_2;
296 if (_cpuid_info.std_cpuid1_ecx.bits.popcnt != 0)
297 result |= CPU_POPCNT;
293 return result; 298 return result;
294 } 299 }
295 300
296 static void get_processor_features(); 301 static void get_processor_features();
297 302
377 static bool supports_sse2() { return (_cpuFeatures & CPU_SSE2) != 0; } 382 static bool supports_sse2() { return (_cpuFeatures & CPU_SSE2) != 0; }
378 static bool supports_sse3() { return (_cpuFeatures & CPU_SSE3) != 0; } 383 static bool supports_sse3() { return (_cpuFeatures & CPU_SSE3) != 0; }
379 static bool supports_ssse3() { return (_cpuFeatures & CPU_SSSE3)!= 0; } 384 static bool supports_ssse3() { return (_cpuFeatures & CPU_SSSE3)!= 0; }
380 static bool supports_sse4_1() { return (_cpuFeatures & CPU_SSE4_1) != 0; } 385 static bool supports_sse4_1() { return (_cpuFeatures & CPU_SSE4_1) != 0; }
381 static bool supports_sse4_2() { return (_cpuFeatures & CPU_SSE4_2) != 0; } 386 static bool supports_sse4_2() { return (_cpuFeatures & CPU_SSE4_2) != 0; }
387 static bool supports_popcnt() { return (_cpuFeatures & CPU_POPCNT) != 0; }
382 // 388 //
383 // AMD features 389 // AMD features
384 // 390 //
385 static bool supports_3dnow() { return (_cpuFeatures & CPU_3DNOW) != 0; } 391 static bool supports_3dnow() { return (_cpuFeatures & CPU_3DNOW) != 0; }
386 static bool supports_mmx_ext() { return is_amd() && _cpuid_info.ext_cpuid1_edx.bits.mmx_amd != 0; } 392 static bool supports_mmx_ext() { return is_amd() && _cpuid_info.ext_cpuid1_edx.bits.mmx_amd != 0; }