Merge commit '0661b47765081c710af3df66ec698aa58ff14d5d'

6 files changed, 2501 insertions, 0 deletions

diff --git a/benchmarks/sort/bmark.mk b/benchmarks/sort/bmark.mk
new file mode 100644
index 0000000..1e76b68
--- /dev/null
+++ b/benchmarks/sort/bmark.mk
@@ -0,0 +1,21 @@
+
+sort_c_src = \
+	sort_main.c \
+	sort.c \
+	syscalls.c \
+
+sort_riscv_src = \
+	crt.S
+
+sort_c_objs			= $(patsubst %.c, %.o, $(sort_c_src))
+sort_riscv_objs = $(patsubst %.S, %.o, $(sort_riscv_src))
+
+sort_host_bin = sort.host 
+$(sort_host_bin): $(sort_c_src)
+	$(HOST_COMP) $^ -o $(sort_host_bin)
+
+sort_riscv_bin = sort.riscv 
+$(sort_riscv_bin): $(sort_c_objs) $(sort_riscv_objs)
+	$(RISCV_LINK) $(sort_c_objs) $(sort_riscv_objs) -o $(sort_riscv_bin) $(RISCV_LINK_OPTS)
+
+junk += $(sort_c_objs) $(sort_riscv_objs) $(sort_host_bin) $(sort_riscv_bin)
diff --git a/benchmarks/sort/dataset.h b/benchmarks/sort/dataset.h
new file mode 100644
index 0000000..7bd40a1
--- /dev/null
+++ b/benchmarks/sort/dataset.h
@@ -0,0 +1,2055 @@
+#define DATA_SIZE_SORT 1024
+float input_data_sort[1024] = {
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+  0.11887336,
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+};
+
diff --git a/benchmarks/sort/sort.c b/benchmarks/sort/sort.c
new file mode 100644
index 0000000..53e83c4
--- /dev/null
+++ b/benchmarks/sort/sort.c
@@ -0,0 +1,253 @@
+#include "sort.h"
+
+int
+n_squared_sort (float * value, int * index, int len)
+{
+  int i, j;
+
+  for (i = 0; i < len-1; i++)
+  {
+    for (j = 0; j < len-1; j++)
+    {
+      if (value[j] > value[j+1])
+      {
+	double val_tmp;
+	int idx_tmp;
+
+	val_tmp = value[j];
+	value[j] = value[j+1];
+	value[j+1] = val_tmp;
+
+	idx_tmp = index[j];
+	index[j] = index[j+1];
+	index[j+1] = idx_tmp;
+      }
+    }
+  }
+
+  return 0;
+}
+
+
+extern void* fake_malloc_radix(size_t size);
+
+int
+radix_sort_tuples (int * value, int * index, int len, int radix_bits)
+{
+  int i, j;
+  int max, min;
+  int numBuckets = 1 << radix_bits;
+  int bitMask = numBuckets - 1;
+  int denShift;
+
+  int * buckets = fake_malloc_radix ((numBuckets + 2) * sizeof(int));
+  int * copy1_value = fake_malloc_radix (sizeof(int) * len);
+  int * copy1_index = fake_malloc_radix (sizeof(int) * len);
+  int * copy2_value = fake_malloc_radix (sizeof(int) * len);
+  int * copy2_index = fake_malloc_radix (sizeof(int) * len);
+  int * tmp_value;
+  int * tmp_index;
+
+  max = value[0];
+  min = value[0];
+  for (i = 0; i < len; i++) {
+    copy1_value[i] = value[i];
+    copy1_index[i] = index[i];
+    if (max < value[i]) {
+      max = value[i];
+    }
+    if (min > value[i]) {
+      min = value[i];
+    }
+  }
+  min = -min;
+  max += min;
+
+  for (i = 0; i < len; i++)
+  {
+    copy1_value[i] += min;
+  }
+
+  denShift = 0;
+  for (i = 0; max != 0; max = max / numBuckets, i++)
+  {
+    for (j = 0; j < numBuckets + 2; j++)
+    {
+      buckets[j] = 0;
+    }
+
+    buckets += 2;
+
+    for (j = 0; j < len; j++)
+    {
+      int myBucket = (int) (((int) copy1_value[j]) >> denShift) & bitMask;
+      buckets[myBucket]++;
+    }
+
+    for (j = 1; j < numBuckets; j++)
+    {
+      buckets[j] += buckets[j-1];
+    }
+
+    buckets--;
+
+    for (j = 0; j < len; j++)
+    {
+      int myBucket = (int) (((int) copy1_value[j]) >> denShift) & bitMask;
+      int index = buckets[myBucket]++;
+      copy2_value[index] = copy1_value[j];
+      copy2_index[index] = copy1_index[j];
+    }
+
+    buckets--;
+    denShift += radix_bits;
+
+    tmp_value = copy1_value;
+    copy1_value = copy2_value;
+    copy2_value = tmp_value;
+
+    tmp_index = copy1_index;
+    copy1_index = copy2_index;
+    copy2_index = tmp_index;
+  }
+
+  max = copy1_value[0];
+  for (i = 0; i < len; i++) {
+    if (max < copy1_value[i]) {
+      max = copy1_value[i];
+    }
+  }
+
+  for (i = 0; i < len; i++)
+  {
+    copy1_value[i] -= min;
+  }
+
+  for (i = 0; i < len; i++)
+  {
+    value[i] = copy1_value[i];
+    index[i] = copy1_index[i];
+  }
+
+  return 0;
+}
+
+int
+insertion_sort (float * value, int * index, int len)
+{
+  int i;
+
+  for (i = 1; i < len; i++)
+  {
+    double current;
+    int cur_index;
+    int empty;
+
+    current = value[i];
+    cur_index = index[i];
+    empty = i;
+
+    while (empty > 0 && current < value[empty-1])
+    {
+      value[empty] = value[empty-1];
+      index[empty] = index[empty-1];
+      empty--;
+    }
+
+    value[empty] = current;
+    index[empty] = cur_index;
+  }
+
+  return 0;
+}
+
+
+int
+partition (float * array, int * index, int low, int high)
+{
+  int left, right, mid;
+  int pivot;
+  float cur;
+  int idx;
+
+  mid = (low + high) / 2;
+  left = low;
+  right = high;
+
+  /* choose pivot as median of 3: low, high, and mid */
+  if ((array[low] - array[mid]) * (array[high] - array[low]) >= 0)
+    pivot = low;
+  else if ((array[mid] - array[low]) * (array[high] - array[mid]) >= 0)
+    pivot = mid;
+  else
+    pivot = high; 
+
+  /* store value,index at the pivot */
+  cur = array[pivot];
+  idx = index[pivot];
+
+  /* swap pivot with the first entry in the list */
+  array[pivot] = array[low];
+  array[low] = cur;
+  
+  index[pivot] = array[pivot];
+  index[low] = idx;
+
+  /* the quicksort itself */
+  while (left < right)
+  {
+    while (array[left] <= cur && left < high)
+      left++;
+    while (array[right] > cur)
+      right--;
+    if (left < right)
+    {
+      float tmp_val;
+      int tmp_idx;
+
+      tmp_val = array[right];
+      array[right] = array[left];
+      array[left] = tmp_val;
+
+      tmp_idx =  index[right];
+      index[right] = index[left];
+      index[left] = tmp_idx;
+    }
+  }
+
+  /* pivot was in low, but now moves into position at right */
+  array[low] = array[right];
+  array[right] = cur;
+
+  index[low] = index[right];
+  index[right] = idx;
+
+  return right;
+}
+
+
+int
+quicksort_inner (float * array, int * index, int low, int high)
+{
+  int pivot;
+  int length = high - low + 1;
+
+  if (high > low)
+  {
+    if (length > MAX_THRESH) {
+      pivot = partition (array, index, low, high);
+      quicksort_inner (array, index, low, pivot-1);
+      quicksort_inner (array, index, pivot+1, high);
+    }
+  }
+
+  return 0;
+}
+
+int quicksort (float * array, int * index, int len)
+{
+  quicksort_inner (array, index, 0, len-1);
+  insertion_sort (array, index, len);
+
+  return 0;
+}
diff --git a/benchmarks/sort/sort.h b/benchmarks/sort/sort.h
new file mode 100644
index 0000000..326d0de
--- /dev/null
+++ b/benchmarks/sort/sort.h
@@ -0,0 +1,53 @@
+#include <string.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#define FAKE_MALLOC_INIT(words, name) \
+  uint32_t heap_##name[words]; \
+  const size_t max_alloc_##name = (words) * sizeof(uint32_t); \
+  size_t cur_pos_##name; \
+  void* fake_malloc_##name( size_t size ) \
+  { \
+    static bool init = false; \
+    if(!init) { \
+      cur_pos_##name = 0; \
+      init = true; \
+    } \
+    if(cur_pos_##name < (words)) {  \
+      void *ptr = (void*) &heap_##name[cur_pos_##name]; \
+      cur_pos_##name += size & ~((uint32_t)3) + 1; \
+      return ptr; \
+    } else { \
+      return NULL; \
+    } \
+  }
+
+    
+
+#ifndef _TAV_SORT_H_
+#define _TAV_SORT_H_
+
+
+int
+n_squared_sort (float * value, int * index, int len);
+
+int
+radix_sort_tuples (int * value, int * index, int len, int radix_bits);
+
+int
+insertion_sort (float * value, int * index, int len);
+
+int
+quicksort (float * array, int * index, int len);
+
+/* This defines the length at quicksort switches to insertion sort */
+#ifndef MAX_THRESH
+#define MAX_THRESH 10
+#endif
+
+#ifndef RADIX_BITS
+#define RADIX_BITS (8)
+#endif
+
+
+#endif /* _TAV_SORT_H_ */
diff --git a/benchmarks/sort/sort_gendata.scala b/benchmarks/sort/sort_gendata.scala
new file mode 100755
index 0000000..820dbc8
--- /dev/null
+++ b/benchmarks/sort/sort_gendata.scala
@@ -0,0 +1,26 @@
+#!/usr/bin/env scala
+
+import scala.util.Sorting
+
+val size = args(0).toInt
+
+def rand_array(size: Int) = {
+  var r = new scala.util.Random
+  Array.fill(size) { r.nextFloat() }
+}
+
+def print_array(name: String, size: Int, arr: Array[Float]) {
+  println("float "+name+"["+size+"] = {")
+  for(i <- 0 to size-2)
+    println("  "+arr(i)+",")
+  println("  "+arr(size-1)+"\n};\n")
+}
+
+println("#define DATA_SIZE_SORT " + size)
+
+val a = rand_array(size)
+val sorted = a.clone()
+Sorting.quickSort(sorted)
+
+print_array("input_data_sort", size, a)
+print_array("verify_data_sort", size, sorted)
diff --git a/benchmarks/sort/sort_main.c b/benchmarks/sort/sort_main.c
new file mode 100644
index 0000000..a4df38d
--- /dev/null
+++ b/benchmarks/sort/sort_main.c
@@ -0,0 +1,93 @@
+// ****************************************************************************
+// sort benchmark from DARPA PERFECT TAV suite
+// ---------------------------------------------------------------------------- 
+#include "sort.h"
+#include "util.h"
+#include "dataset.h"
+
+#define USE_RADIX_SORT
+
+// Need 7 times the input size for: input data, indices, 
+// four copies, and buckets.
+FAKE_MALLOC_INIT( (8 * DATA_SIZE_SORT), radix )
+
+int main( int argc, char* argv[] )
+{
+  int err;
+
+  int* index = fake_malloc_radix (sizeof(int) * DATA_SIZE_SORT);
+  for ( int i = 0; i < DATA_SIZE_SORT; i++ )
+    index[i] = i;
+
+#ifdef PREALLOCATE
+  // Access every element of input_data_sort to make sure it's in cache
+  // (or at least that as much as possible of its beginning is).
+  float sum = 0;
+  for(int i = DATA_SIZE_SORT-1; i >= 0; i--) {
+    sum += input_data_sort[i];
+  }
+  if(sum < 0.1)
+    return 1;
+
+  const bool prealloc = true;
+#else
+  const bool prealloc = false;
+#endif
+  
+  setStats(1);
+
+#define read_csr_safe(reg) ({ long __tmp = 0; \
+  asm volatile ("csrr %0, " #reg : "+r"(__tmp)); \
+  __tmp; })
+
+
+  long cycles = read_csr_safe(cycle);
+  long instret = read_csr_safe(instret);
+
+  // Do sorting
+#if defined(USE_N_SQUARED_SORT)
+  const char* algo = "N_SQUARED";
+  err = n_squared_sort ( input_data_sort, index, DATA_SIZE_SORT );
+#elif defined(USE_RADIX_SORT)
+  const char* algo = "RADIX";
+  err = radix_sort_tuples ( (int *) input_data_sort, index, DATA_SIZE_SORT, RADIX_BITS );
+#elif defined(USE_INSERTION_SORT)
+  const char* algo = "INSERTION";
+  err = insertion_sort ( input_data_sort, index, DATA_SIZE_SORT );
+#else
+  const char* algo = "QUICKSORT";
+  err = quicksort ( input_data_sort, index, DATA_SIZE_SORT );
+#endif
+  
+  cycles = read_csr_safe(cycle) - cycles;
+  instret = read_csr_safe(instret) - instret;
+
+  setStats(0);
+
+  // Validate result
+  err = 0;
+  for(int i = 0; i < DATA_SIZE_SORT-1; i++)
+  {
+    if((unsigned int) input_data_sort[i] > (unsigned int) input_data_sort[i+1])
+    {
+      err = i;
+      for(int j = 0; j < DATA_SIZE_SORT; j++)
+        printf("%d:\t%d\n", j, input_data_sort[j]);
+      break;
+    }
+  }
+
+  /*printf("sort_cycles  = %ld\n", cycles);
+  printf("sort_instret = %d\n", instret);
+  printf("sort_size    = %d\n", DATA_SIZE_SORT);
+  printf("sort_algo    = %s\n", algo);
+  printf("sort_radix_bits = %d\n", RADIX_BITS);
+  printf("sort_prealloc = %s\n", prealloc ? "true" : "false");
+  printf("sort_err = %d\n", err);
+  */
+
+  return err;
+}
+
+
+