note function arguments as locals

3 files changed, 13 insertions, 2 deletions

diff --git a/tools/eliminator/eliminator-test-output.js b/tools/eliminator/eliminator-test-output.js
index a0e4f1e7..29e7c185 100644
--- a/tools/eliminator/eliminator-test-output.js
+++ b/tools/eliminator/eliminator-test-output.js
@@ -1,4 +1,5 @@
-function a() {
+function a($directory) {
+  chak($directory + _strlen($directory) | 0);
   var $210 = HEAP32[100];
   HEAP32[1e3] = HEAP32[5];
   HEAP32[90] = $210;
diff --git a/tools/eliminator/eliminator-test.js b/tools/eliminator/eliminator-test.js
index d2c1e8fe..7d0a865e 100644
--- a/tools/eliminator/eliminator-test.js
+++ b/tools/eliminator/eliminator-test.js
@@ -1,4 +1,7 @@
-function a() {
+function a($directory) {
+  var $1 = _strlen($directory);
+  var $p_0 = $directory + $1 | 0;
+  chak($p_0);
   var $210 = HEAP32[100]; // heaps alias each other! so this cannot be eliminated
   HEAP32[1e3] = HEAP32[5];
   HEAP32[90] = $210;
diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js
index 203db5bc..b9a0bce8 100644
--- a/tools/js-optimizer.js
+++ b/tools/js-optimizer.js
@@ -1382,6 +1382,13 @@ function eliminate(ast) {
     var values = {};
     var locals = {};
     var varsToRemove = {}; // variables being removed, that we can eliminate all 'var x;' of
+    // add arguments as locals
+    if (func[2]) {
+      for (var i = 0; i < func[2].length; i++) {
+        locals[func[2][i]] = true;
+      }
+    }
+    // examine body and note locals
     traverse(func, function(node, type) {
       if (type === 'var') {
         var node1 = node[1];