RFC: Switch to ast ids (instead of positions) for type feedback.

src/ia32/deoptimizer-ia32.cc

Index: src/ia32/deoptimizer-ia32.cc
diff --git a/src/ia32/deoptimizer-ia32.cc b/src/ia32/deoptimizer-ia32.cc
index d95df3e7ea3d72664e71b4d7e64624dd39064130..8a72c74c544f8c5b78a64d0533d1be26ab7f0c77 100644
--- a/src/ia32/deoptimizer-ia32.cc
+++ b/src/ia32/deoptimizer-ia32.cc
@@ -56,7 +56,7 @@ void Deoptimizer::DeoptimizeFunction(JSFunction* function) {
   SafepointTable table(function->code());
   for (unsigned i = 0; i < table.length(); i++) {
     unsigned pc_offset = table.GetPcOffset(i);
-    int deoptimization_index = table.GetDeoptimizationIndex(i);
+    AstId deoptimization_index = table.GetDeoptimizationIndex(i);
     int gap_code_size = table.GetGapCodeSize(i);
 #ifdef DEBUG
     // Destroy the code which is not supposed to run again.