platform/mac/SuperColliderAU/AUSDK/CAVectorUnit.cpp

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  41 /*=============================================================================
  42         CAVectorUnit.cpp
  43
  44 =============================================================================*/
  45
  46 #include "CAVectorUnit.h"
  47
  48 #if !TARGET_OS_WIN32
  49         #include <sys/sysctl.h>
  50 #elif HAS_IPP
  51         #include "ippdefs.h"
  52         #include "ippcore.h"
  53 #endif
  54
  55 int CAVectorUnit::sVectorUnitType = kVecUninitialized;
  56
  57 SInt32  CAVectorUnit::CheckVectorUnit()
  58 {
  59         int result = kVecNone;
  60
  61 #if !TARGET_OS_WIN32
  62 #if DEBUG
  63         if (getenv("CA_NoVector")) {
  64                 fprintf(stderr, "CA_NoVector set; Vector unit optimized routines will be bypassed\n");
  65                 return result;
  66         }
  67         else
  68 #endif
  69         {
  70         #if (TARGET_CPU_PPC || TARGET_CPU_PPC64)
  71                 int sels[2] = { CTL_HW, HW_VECTORUNIT };
  72                 int vType = 0; //0 == scalar only
  73                 size_t length = sizeof(vType);
  74                 int error = sysctl(sels, 2, &vType, &length, NULL, 0);
  75                 if (!error && vType > 0)
  76                         result = kVecAltivec;
  77         #elif (TARGET_CPU_X86 || TARGET_CPU_X86_64)
  78                 int answer = 0;
  79                 size_t length = sizeof(answer);
  80                 int error = sysctlbyname("hw.optional.sse3", &answer, &length, NULL, 0);
  81                 if (!error && answer)
  82                         result = kVecSSE3;
  83                 else {
  84                         answer = 0;
  85                         length = sizeof(answer);
  86                         error = sysctlbyname("hw.optional.sse2", &answer, &length, NULL, 0);
  87                         if (!error && answer)
  88                                 result = kVecSSE2;
  89                 }
  90         #endif
  91         }
  92 #elif HAS_IPP
  93         int error = ippStaticInit();
  94         if(ippStsNoErr == error)
  95         {
  96                 switch(ippGetCpuType())
  97                 {
  98                         case ippCpuP4HT2:
  99                         case ippCpuDS:
 100                                 result = kVecSSE3;
 101                                 break;
 102                         case ippCpuP4:
 103                         case ippCpuP4HT:
 104                         case ippCpuCentrino:
 105                                 result = kVecSSE2;
 106                                 break;
 107                         default:
 108                                 break;
 109                 }
 110         }
 111 #endif
 112         sVectorUnitType = result;
 113         return result;
 114 }
 115