Mark/compact: use a dynamically-sized mark stack, and don't do linear scan

This improves the performance of the mark/compact and mark/region
collectors, and paves the way for doing mark/region with smaller
region sizes, in the style of Immix.

1 files changed, 1 insertions, 5 deletions

diff --git a/rts/sm/Evac.c b/rts/sm/Evac.c
index 5836210b34..379fbbaffd 100644
--- a/rts/sm/Evac.c
+++ b/rts/sm/Evac.c
@@ -20,6 +20,7 @@
 #include "GCThread.h"
 #include "GCUtils.h"
 #include "Compact.h"
+#include "MarkStack.h"
 #include "Prelude.h"
 #include "Trace.h"
 #include "LdvProfile.h"
@@ -499,11 +500,6 @@ loop:
        */
       if (!is_marked((P_)q,bd)) {
           mark((P_)q,bd);
-          if (mark_stack_full()) {
-              debugTrace(DEBUG_gc,"mark stack overflowed");
-              mark_stack_overflowed = rtsTrue;
-              reset_mark_stack();
-          }
           push_mark_stack((P_)q);
       }
       return;