Simple performance benchmarks: label, macro and token lookups

Simple scripts to generate performance benchmarks for label,
macro and token lookups.  The label and macro lookups are simple
numerical sequences; it may be desirable to add some more
sophisticated algorithms for producing tokens in case we want to
compare different hash functions against each other.

test/perf/label.pl

@@ -0,0 +1,18 @@
+#!/usr/bin/perl
+#
+# Generate a test case for label lookup performance
+#
+
+($len) = @ARGV;
+$len = 100000 unless ($len);
+
+print "\tbits 32\n";
+print "\tsection .data\n";
+print "\n";
+
+for ($i = 0; $i < $len; $i++) {
+    print "l$i:\n";
+    for ($j = 0; $j < 8; $j++) {
+	print "\tdd l", int(rand($i+1)), "\n";
+    }
+}

test/perf/macro.pl

@@ -0,0 +1,18 @@
+#!/usr/bin/perl
+#
+# Generate a test case for macro lookup performance
+#
+
+($len) = @ARGV;
+$len = 100000 unless ($len);
+
+print "\tbits 32\n";
+print "\tsection .data\n";
+print "\n";
+
+for ($i = 0; $i < $len; $i++) {
+    print "%define m$i $i\n";
+    for ($j = 0; $j < 8; $j++) {
+	print "\tdd m", int(rand($i+1)), "\n";
+    }
+}

test/perf/token.pl

@@ -0,0 +1,23 @@
+#!/usr/bin/perl
+#
+# Generate a test case for token lookup performance
+#
+
+@insns = qw(add sub adc sbb and or xor mov);
+@regs  = qw(eax ebx ecx edx esp ebp esi edi);
+
+srand(0);
+sub pickone(@) {
+    return $_[int(rand(scalar @_))];
+}
+
+($len) = @ARGV;
+$len = 1000000 unless ($len);
+
+print "\tbits 32\n";
+print "\n";
+
+for ($i = 0; $i < $len; $i++) {
+    print "\t", pickone(@insns), " ",
+        pickone(@regs), ",", pickone(@regs), "\n";
+}