benchmarks/common/util.h

   1 #ifndef __UTIL_H
   2 #define __UTIL_H
   3
   4 //--------------------------------------------------------------------------
   5 // Macros
   6
   7 // Set HOST_DEBUG to 1 if you are going to compile this for a host
   8 // machine (ie Athena/Linux) for debug purposes and set HOST_DEBUG
   9 // to 0 if you are compiling with the smips-gcc toolchain.
  10
  11 #ifndef HOST_DEBUG
  12 #define HOST_DEBUG 0
  13 #endif
  14
  15 // Set PREALLOCATE to 1 if you want to preallocate the benchmark
  16 // function before starting stats. If you have instruction/data
  17 // caches and you don't want to count the overhead of misses, then
  18 // you will need to use preallocation.
  19
  20 #ifndef PREALLOCATE
  21 #define PREALLOCATE 0
  22 #endif
  23
  24 // Set SET_STATS to 1 if you want to carve out the piece that actually
  25 // does the computation.
  26
  27 #if HOST_DEBUG
  28 #include <stdio.h>
  29 static void setStats(int enable) {}
  30 #else
  31 extern void setStats(int enable);
  32 #endif
  33
  34 extern int have_vec;
  35
  36 #define static_assert(cond) switch(0) { case 0: case !!(long)(cond): ; }
  37
  38 static void printArray(const char name[], int n, const int arr[])
  39 {
  40 #if HOST_DEBUG
  41   int i;
  42   printf( " %10s :", name );
  43   for ( i = 0; i < n; i++ )
  44     printf( " %3d ", arr[i] );
  45   printf( "\n" );
  46 #endif
  47 }
  48
  49 static void printDoubleArray(const char name[], int n, const double arr[])
  50 {
  51 #if HOST_DEBUG
  52   int i;
  53   printf( " %10s :", name );
  54   for ( i = 0; i < n; i++ )
  55     printf( " %g ", arr[i] );
  56   printf( "\n" );
  57 #endif
  58 }
  59
  60 static int verify(int n, const volatile int* test, const int* verify)
  61 {
  62   int i;
  63   // Unrolled for faster verification
  64   for (i = 0; i < n/2*2; i+=2)
  65   {
  66     int t0 = test[i], t1 = test[i+1];
  67     int v0 = verify[i], v1 = verify[i+1];
  68     if (t0 != v0) return i+1;
  69     if (t1 != v1) return i+2;
  70   }
  71   if (n % 2 != 0 && test[n-1] != verify[n-1])
  72     return n;
  73   return 0;
  74 }
  75
  76 static int verifyDouble(int n, const volatile double* test, const double* verify)
  77 {
  78   int i;
  79   // Unrolled for faster verification
  80   for (i = 0; i < n/2*2; i+=2)
  81   {
  82     double t0 = test[i], t1 = test[i+1];
  83     double v0 = verify[i], v1 = verify[i+1];
  84     int eq1 = t0 == v0, eq2 = t1 == v1;
  85     if (!(eq1 & eq2)) return i+1+eq1;
  86   }
  87   if (n % 2 != 0 && test[n-1] != verify[n-1])
  88     return n;
  89   return 0;
  90 }
  91
  92 static void __attribute__((noinline)) barrier(int ncores)
  93 {
  94   static volatile int sense;
  95   static volatile int count;
  96   static __thread int threadsense;
  97
  98   __sync_synchronize();
  99
 100   threadsense = !threadsense;
 101   if (__sync_fetch_and_add(&count, 1) == ncores-1)
 102   {
 103     count = 0;
 104     sense = threadsense;
 105   }
 106   else while(sense != threadsense)
 107     ;
 108
 109   __sync_synchronize();
 110 }
 111
 112 #ifdef __riscv
 113 #include "encoding.h"
 114 #endif
 115
 116 #endif //__UTIL_H