Partial ia32 implementation of optimized try/catch (by Kevin Millikin)

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
index 23f41fa7d21cce30aace740db33228b6e9192acd..b66c6f5fdcc896c9c46b373b71cb2370efdf7d5e 100644
--- a/src/runtime-profiler.cc
+++ b/src/runtime-profiler.cc
@@ -182,6 +182,10 @@ void RuntimeProfiler::AttemptOnStackReplacement(JSFunction* function) {
   // arguments accesses, which is unsound.  Don't try OSR.
   if (shared->uses_arguments()) return;
 
+  // We are not prepared to do OSR for a function has catch clauses.
+  // TODO(mmassi): Fix this.
+  if (shared->dont_osr()) return;
+
   // We're using on-stack replacement: patch the unoptimized code so that
   // any back edge in any unoptimized frame will trigger on-stack
   // replacement for that frame.