From b9f86b8fa3edc99805b5ace739df9c44ba8dc352 Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Sat, 12 May 2012 12:02:11 -0700
Subject: print saved vars in registerize

---
 tools/js-optimizer.js | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'tools/js-optimizer.js')

diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js
index f968fec2..d438094b 100644
--- a/tools/js-optimizer.js
+++ b/tools/js-optimizer.js
@@ -1176,6 +1176,7 @@ function registerize(ast, conservative) {
     var fullNames = {};
     var loopRegs = [];
     var loops = 0;
+    var saved = 0;
     function decUse(name) {
       if (!varUses[name]) return false; // no uses left, or not a relevant variable
       var reg = varRegs[name];
@@ -1183,6 +1184,7 @@ function registerize(ast, conservative) {
         // acquire register
         if (freeRegs.length > 0) {
           reg = freeRegs.pop();
+          saved++;
         } else {
           reg = nextReg++;
           fullNames[reg] = 'r' + reg; // TODO: even smaller names
@@ -1256,6 +1258,7 @@ function registerize(ast, conservative) {
       }
       getStatements(fun).unshift(['var', vars]);
     }
+    printErr(fun[1] + ': saved ' + saved + ' vars through registerization');
   });
 }
 
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