run-time: Initialize BDWGC from dylan_init_memory_manager

* sources/lib/run-time/boehm-collector.c
  (dylan_init_memory_manager): Only assert gc_teb_inside_tramp
   for the HARP run-time. Always invoke GC_INIT() and
   GC_start_mark_threads().

* sources/lib/run-time/llvm-runtime-init.c
  (_Init_Run_Time): Instead of using BDWGC-specific initialization,
   call dylan_init_memory_manager.

sources/lib/run-time/boehm-collector.c

@@ -1071,20 +1071,15 @@ void primitive_mps_ld_merge(void *d_into, void *d_obj)
 
 MMError dylan_init_memory_manager(void)
 {
+#ifdef OPEN_DYLAN_BACKEND_HARP
   gc_teb_t gc_teb = current_gc_teb();
+  assert(!gc_teb->gc_teb_inside_tramp);
+#endif
 
   if (Prunning_under_dylan_debuggerQ == FALSE) {
     set_CONSOLE_CTRL_HANDLER(&DylanBreakControlHandler, TRUE);
   }
 
-  assert(!gc_teb->gc_teb_inside_tramp);
-
-  /* Not required for the dll version of Boehm. */
-  /* GC_init(); */
-
-  /* Call this to enable incrementality. This doesn't work with the MM GC. */
-  /* GC_enable_incremental(); */
-
   initialize_CRITICAL_SECTION(&polling_threads_lock);
 
   if (Prunning_under_dylan_debuggerQ) {
@@ -1093,6 +1088,16 @@ MMError dylan_init_memory_manager(void)
     class_breakpoint_events[1] = create_EVENT(NULL, FALSE, FALSE, NULL);
   }
 
+  GC_INIT();
+
+  /* Call this to enable incrementality. This doesn't work with the MM GC. */
+  /* GC_enable_incremental(); */
+
+
+  // start the mark threads before the main entry point is reached
+  // so that the debugger nub can identify them
+  GC_start_mark_threads();
+
   return(0);
 }
 

sources/lib/run-time/llvm-runtime-init.c

@@ -3,10 +3,9 @@
 #include <stdio.h>
 
 #include "llvm-runtime.h"
+#include "mm.h"
 
-#ifdef GC_USE_BOEHM
-#include <gc/gc.h>
-#endif
+extern MMError dylan_init_memory_manager(void);
 
 void _Init_Run_Time(void)
 {
@@ -25,13 +24,7 @@ void _Init_Run_Time(void)
 #endif
     EstablishDylanExceptionHandlers();
 
-#ifdef GC_USE_BOEHM
-    GC_INIT();
-
-    // start the mark threads before the main entry point is reached
-    // so that the debugger nub can identify them
-    GC_start_mark_threads();
-#endif
+    dylan_init_memory_manager();
 
     primitive_initialize_thread_variables();
   }