Fix OOM bug 3976.

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 834af7245ff295166935394cdaa6411bfbdea052..15b47674d30bee227f61d20c9f47e51ab34b6d90 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -3356,7 +3356,7 @@ HOptimizedGraphBuilder::HOptimizedGraphBuilder(CompilationInfo* info)
   // This is not initialized in the initializer list because the
   // constructor for the initial state relies on function_state_ == NULL
   // to know it's the initial state.
-  function_state_= &initial_function_state_;
+  function_state_ = &initial_function_state_;

[ulan, 2015/03/20 10:56:54]

Nit: this probably belongs to another CL, but I am fine with landing it here.

[Erik Corry, 2015/03/20 11:39:23]

git cl won't let me omit this change for some reason

   InitializeAstVisitor(info->zone());
   if (FLAG_hydrogen_track_positions) {
     SetSourcePosition(info->shared_info()->start_position());
@@ -10329,7 +10329,7 @@ bool HGraphBuilder::MatchRotateRight(HValue* left,
       !ShiftAmountsAllowReplaceByRotate(shr->right(), shl->right())) {
     return false;
   }
-  *operand= shr->left();
+  *operand = shr->left();
   *shift_amount = shr->right();
   return true;
 }