the speedster

1 files changed, 12 insertions, 4 deletions

diff --git a/pu2/pu2.c b/pu2/pu2.c
index d1f6fe1..1e3bdf1 100644
--- a/pu2/pu2.c
+++ b/pu2/pu2.c
@@ -281,8 +281,13 @@ clean_slice_ref(slice *val) { free(val->ref); }
 char   T;
 string ERR;
 string ERR_code;
-int   *Code = &m[ 4000 ];
-int   *Data = &m[ static_len(m) - 1 ]; // grows downwards
+int   *Code;
+int   *Data;
+
+init_ir2() {
+    Code = &m[ 4000 ];
+    Data = &m[ S * sizeof(int) - 1 ]; // grows downwards
+}
 
 __attribute__((always_inline)) emit(int op, int val) {
     *Code++ = op;
@@ -650,7 +655,7 @@ double bench_cycle(int instr) {
     int i;
     for (i = 0; i < S - 2; i += 2) {
         m[ i ]     = instr;
-        m[ i + 1 ] = 5;
+        m[ i + 1 ] = 10;
     }
     m[ S - 2 ] = 0;
     m[ S - 1 ] = 0;
@@ -785,6 +790,9 @@ main(int argc, char **argv) {
             argv[ 0 ]);
     }
 
+    init_pu2();
+    init_ir2();
+
     if (strcmp(argv[ 1 ], "benchmark") == 0) {
         benchmark(bench_cycle, "time");
 
@@ -800,7 +808,7 @@ main(int argc, char **argv) {
         unsigned long long t1 = rdtsc();
         out                   = sum; // single volatile write to make sum observable
         printf(
-            "N=%llu cycles=%llu cycles/iter=%.6f\n",
+            "(absolute max) N=%llu cycles=%llu cycles/iter=%.6f\n",
             (unsigned long long) N,
             (unsigned long long) (t1 - t0),
             (t1 - t0) / (double) N);