Basic infrastructure for fast two-pass compilation. A CFG is...

src/compiler.cc

Index: src/compiler.cc
===================================================================
--- src/compiler.cc	(revision 2595)
+++ src/compiler.cc	(working copy)
@@ -28,6 +28,7 @@
 #include "v8.h"
 
 #include "bootstrapper.h"
+#include "cfg.h"
 #include "codegen-inl.h"
 #include "compilation-cache.h"
 #include "compiler.h"
@@ -78,6 +79,21 @@
     return Handle<Code>::null();
   }
 
+  if (FLAG_multipass) {
+    Cfg* cfg = Cfg::Build(literal);
+#ifdef DEBUG
+    if (FLAG_print_cfg && cfg != NULL) {
+      SmartPointer<char> name = literal->name()->ToCString();
+      PrintF("Function \"%s\":\n", *name);
+      cfg->Print();
+      PrintF("\n");
+    }
+#endif
+    if (cfg != NULL) {
+      return cfg->Compile(literal, script);
+    }
+  }
+
   // Generate code and return it.
   Handle<Code> result = CodeGenerator::MakeCode(literal, script, is_eval);
   return result;