diff --git a/hphp/idl/base.php b/hphp/idl/base.php
index e3f8a4308..c630832a4 100644
--- a/hphp/idl/base.php
+++ b/hphp/idl/base.php
@@ -621,49 +621,6 @@ function generateFuncCPPHeader($func, $f, $method = false, $forceRef = false,
   }
 }
 
-function generateFuncProfileHeader($func, $f) {
-  $var_arg = ($func['flags'] & VarArgsMask);
-  $args = $func['args'];
-
-  fprintf($f, 'inline %s x_%s', typename($func['return']), $func['name']);
-  generateFuncArgsCPPHeader($func, $f);
-  fprintf($f, " {\n");
-
-  if (($func['flags'] & NoProfile)) {
-    fprintf($f, "  FUNCTION_NOPROFILE_BUILTIN(%s);\n", $func['name']);
-  } else if (!($func['flags'] & NoInjection)) {
-    fprintf($f, "  FUNCTION_INJECTION_BUILTIN(%s);\n", $func['name']);
-  }
-  if (!empty($func['taint_observer'])) {
-    fprintf(
-      $f,
-      "  TAINT_OBSERVER(%s, %s);\n",
-      $func['taint_observer']['set_mask'],
-      $func['taint_observer']['clear_mask']);
-  }
-
-  fprintf($f, "  ");
-
-  if (typename($func['return']) !== 'void') {
-    fprintf($f, "return ");
-  }
-  fprintf($f, "f_%s(", $func['name']);
-
-  if ($var_arg) fprintf($f, '_argc');
-  if ($var_arg && count($args) > 0) fprintf($f, ', ');
-  for ($i = 0; $i < count($args); $i++) {
-    $arg = $args[$i];
-    if ($i > 0) fprintf($f, ', ');
-    fprintf($f, '%s', $arg['name']);
-  }
-  if ($var_arg) {
-    fprintf($f, ', _argv');
-  }
-  fprintf($f, ");\n");
-
-  fprintf($f, "}\n\n");
-}
-
 function generateConstCPPHeader($const, $f) {
   $name = typename($const['type']);
   if ($name == 'String') {
diff --git a/hphp/idl/idl.php b/hphp/idl/idl.php
index 3ab8008a4..871d220f4 100644
--- a/hphp/idl/idl.php
+++ b/hphp/idl/idl.php
@@ -284,60 +284,6 @@ function idl_format_param($header, $impl) {
   replaceParams($impl,   false);
 }
 
-/*****************************************************************************/
-function idl_format_profile($header) {
-  global $funcs, $PREFIX, $NAME, $name, $mode;
-
-  ($f = fopen($header, 'w')) || die("cannot open $header");
-  if ($mode == 'sep' || $mode == 'remote') {
-    $inc_file = "\"ext_${name}.h\"";
-  } else {
-    if ($name == "php_mcc") {
-      $inc_file = "<runtime/ext/phpmcc/ext_${name}.h>";
-    } else {
-      $inc_file = "<runtime/ext/ext_${name}.h>";
-    }
-  }
-
-  fprintf($f,
-          <<<EOT
-
-#ifndef __${PREFIX}PROFILE_${NAME}_H__
-#define __${PREFIX}PROFILE_${NAME}_H__
-
-// >>>>>> Generated by idl.php. Do NOT modify. <<<<<<
-
-EOT
-          );
-
-  fprintf($f,
-          <<<EOT
-
-#include $inc_file
-
-namespace HPHP {
-///////////////////////////////////////////////////////////////////////////////
-
-
-EOT
-          );
-
-  foreach ($funcs as $func) {
-    generateFuncProfileHeader($func, $f);
-  }
-  fprintf($f,
-          <<<EOT
-
-///////////////////////////////////////////////////////////////////////////////
-}
-
-#endif // __${PREFIX}PROFILE_${NAME}_H__
-
-EOT
-          );
-  fclose($f);
-}
-
 /*****************************************************************************/
 function idl_format_extmap($header, $impl) {
   idl_format_extmap_header($header);