Add entry point for the timing experiments

timings/src/main/java/com/ankurm/vectorapi/Main.java

@@ -0,0 +1,25 @@
+package com.ankurm.vectorapi;
+
+/**
+ * Runs every timing experiment quoted in the article, on whatever machine you
+ * are sitting at. These are exploratory timings, not statistically rigorous
+ * benchmarks -- see the jmh/ module for the harness you would defend numbers with.
+ *
+ *   javac --add-modules jdk.incubator.vector -d out $(find src -name '*.java')
+ *   java  --add-modules jdk.incubator.vector -cp out com.ankurm.vectorapi.Main
+ *   java  --add-modules jdk.incubator.vector -XX:-UseSuperWord -cp out com.ankurm.vectorapi.Main
+ */
+public final class Main {
+    public static void main(String[] args) {
+        int n = args.length > 0 ? Integer.parseInt(args[0]) : 8192;
+        Env.print();
+        System.out.println("array length   : " + n + " floats (" + (n * 4 / 1024) + " KiB, cache-resident)");
+        System.out.println();
+        SquareAdd.run(n);
+        MaskedFilter.run(n);
+        Brightness.run(n);
+        ReductionOrder.run();
+    }
+
+    private Main() {}
+}