Separate builtin initialization calls

Merged: https://github.com/ruby/ruby/pull/2792

ast.c

@@ -690,6 +690,4 @@ Init_ast(void)
     rb_mAST = rb_define_module_under(rb_cRubyVM, "AbstractSyntaxTree");
     rb_cNode = rb_define_class_under(rb_mAST, "Node", rb_cObject);
     rb_undef_alloc_func(rb_cNode);
-
-    load_ast();
 }

error.c

@@ -3077,12 +3077,6 @@ Init_syserr(void)
 
 #include "warning.rbinc"
 
-void
-Init_warning(void)
-{
-    load_warning();
-}
-
 /*!
  * \}
  */

gc.c

@@ -11868,7 +11868,6 @@ Init_GC(void)
     VALUE gc_constants;
 
     rb_mGC = rb_define_module("GC");
-    load_gc();
 
     gc_constants = rb_hash_new();
     rb_hash_aset(gc_constants, ID2SYM(rb_intern("RVALUE_SIZE")), SIZET2NUM(sizeof(RVALUE)));

inits.c

@@ -12,6 +12,7 @@
 #include "internal/inits.h"
 #include "ruby.h"
 #include "builtin.h"
+static void Init_builtin_prelude(void);
 #include "prelude.rbinc"
 
 #define CALL(n) {void Init_##n(void); Init_##n();}
@@ -45,6 +46,7 @@ rb_call_inits(void)
     CALL(Hash);
     CALL(Struct);
     CALL(Regexp);
+    CALL(pack);
     CALL(transcode);
     CALL(marshal);
     CALL(Range);
@@ -57,6 +59,7 @@ rb_call_inits(void)
     CALL(Proc);
     CALL(Binding);
     CALL(Math);
+    CALL(GC);
     CALL(Enumerator);
     CALL(VM);
     CALL(ISeq);
@@ -66,18 +69,21 @@ rb_call_inits(void)
     CALL(Rational);
     CALL(Complex);
     CALL(version);
+    CALL(vm_trace);
     CALL(vm_stack_canary);
+    CALL(ast);
     CALL(gc_stress);
 
     // enable builtin loading
     CALL(builtin);
 
-    CALL(GC);
-    CALL(IO_nonblock);
-    CALL(ast);
-    CALL(vm_trace);
-    CALL(pack);
-    CALL(warning);
-    load_prelude();
+#define BUILTIN(n) CALL(builtin_##n)
+    BUILTIN(gc);
+    BUILTIN(io);
+    BUILTIN(ast);
+    BUILTIN(trace_point);
+    BUILTIN(pack);
+    BUILTIN(warning);
+    Init_builtin_prelude();
 }
 #undef CALL

io.c

@@ -13522,9 +13522,3 @@ Init_IO(void)
 }
 
 #include "io.rbinc"
-
-void
-Init_IO_nonblock(void)
-{
-    load_io();
-}

pack.c

@@ -1767,7 +1767,5 @@ utf8_to_uv(const char *p, long *lenp)
 void
 Init_pack(void)
 {
-    load_pack();
-
     id_associated = rb_make_internal_id();
 }

tool/mk_builtin_loader.rb

@@ -166,7 +166,7 @@ def mk_builtin_header file
       end
     }
 
-    f.puts "static void load_#{base}(void)"
+    f.puts "void Init_builtin_#{base}(void)"
     f.puts "{"
 
     table = "#{base}_table"

vm_trace.c

@@ -1526,8 +1526,6 @@ Init_vm_trace(void)
 
     rb_cTracePoint = rb_define_class("TracePoint", rb_cObject);
     rb_undef_alloc_func(rb_cTracePoint);
-
-    load_trace_point();
 }
 
 typedef struct rb_postponed_job_struct {