TempleOSCDV4.11.ISO

Demo/TimeIns.HC

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+/*Allows you to time insts.
+Results vary because the CPU does
+parallel and out-of-order execution.
+*/
+
+#define SAMPLE_SIZE	10000000
+
+U0 TimeIns()
+{
+  I64 i,start,end,overhead_time,test_time;
+  F64 d=5.0;
+
+  //Measure Loop Overhead
+  start=GetTSC;
+  for (i=0;i<SAMPLE_SIZE;i++);
+  end=GetTSC;
+  overhead_time=end-start;
+  "\nOverhead Cycles:%12.6f\n",ToF64(overhead_time)/SAMPLE_SIZE;
+
+  start=GetTSC;
+  for (i=0;i<SAMPLE_SIZE;i++) {
+    #exe {PassTrace(0b10000000000);};
+//Time these insts
+    d*=1.00001;
+    #exe {PassTrace(0);};
+  }
+  end=GetTSC;
+  test_time=end-start;
+
+  "Measured Cycles:%12.6f\n",ToF64(test_time-overhead_time)/SAMPLE_SIZE;
+}
+
+TimeIns;
+TimeIns;
+TimeIns;