add test

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9230 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/tools/codemap.js

@@ -138,6 +138,20 @@ function assertNoEntry(codeMap, addr) {
 })();
 
 
+(function testDeadCodeCleanups() {
+  var codeMap = new CodeMap();
+  codeMap.addCode(0x1500, newCodeEntry(0x200, 'code1'));
+  codeMap.addCode(0x1700, newCodeEntry(0x100, 'code2'));
+  assertEntry(codeMap, 'code1', 0x1500);
+  assertEntry(codeMap, 'code2', 0x1700);
+  codeMap.moveCode(0x1500, 0x1700);  // Deprecate code2.
+  assertEntry(codeMap, 'code1', 0x1700);
+  codeMap.addCode(0x1750, newCodeEntry(0x100, 'code3'));
+  assertNoEntry(codeMap, 0x1700);
+  assertEntry(codeMap, 'code3', 0x1750);
+})();
+
+
 (function testDynamicNamesDuplicates() {
   var codeMap = new CodeMap();
   // Code entries with same names but different addresses.