Start processing function blocks in Subzero.

src/llvm2ice.cpp

Index: src/llvm2ice.cpp
diff --git a/src/llvm2ice.cpp b/src/llvm2ice.cpp
index bf7de31a233df13fbae0cdc575e1a709e8c412d8..87cecaa2c605f28ecc6282f85ff06ac93c8e2236 100644
--- a/src/llvm2ice.cpp
+++ b/src/llvm2ice.cpp
@@ -150,8 +150,8 @@ int main(int argc, char **argv) {
       return 1;
     }
 
-    Ice::Converter Converter(&Ctx, Flags);
-    Converter.convertToIce(Mod);
+    Ice::Converter Converter(Mod, &Ctx, Flags);
+    Converter.convertToIce();
     return Converter.getErrorStatus();
   }
 }