X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fsm%2FEvac.c;h=3212ce5852737cbf8e5703630294786c8ac86a14;hb=a6f61eeea1db7592d1a0f92d61a3d9971daecd73;hp=ae843bd575790704d27184981c2379b44aa2b225;hpb=948c01bdb7f42504487a624b229137694871efd0;p=ghc-hetmet.git

diff --git a/rts/sm/Evac.c b/rts/sm/Evac.c
index ae843bd..3212ce5 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"
@@ -97,8 +98,6 @@ copy_tag(StgClosure **p, const StgInfoTable *info,
 
     to = alloc_for_copy(size,stp);
     
-    TICK_GC_WORDS_COPIED(size);
-
     from = (StgPtr)src;
     to[0] = (W_)info;
     for (i = 1; i < size; i++) { // unroll for small i
@@ -143,8 +142,6 @@ copy_tag_nolock(StgClosure **p, const StgInfoTable *info,
     *p = TAG_CLOSURE(tag,(StgClosure*)to);
     src->header.info = (const StgInfoTable *)MK_FORWARDING_PTR(to);
     
-    TICK_GC_WORDS_COPIED(size);
-
     from = (StgPtr)src;
     to[0] = (W_)info;
     for (i = 1; i < size; i++) { // unroll for small i
@@ -195,8 +192,6 @@ spin:
     to = alloc_for_copy(size_to_reserve, stp);
     *p = (StgClosure *)to;
 
-    TICK_GC_WORDS_COPIED(size_to_copy);
-
     from = (StgPtr)src;
     to[0] = info;
     for (i = 1; i < size_to_copy; i++) { // unroll for small i
@@ -505,11 +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;
@@ -559,8 +549,17 @@ loop:
       copy(p,info,q,sizeW_fromITBL(INFO_PTR_TO_STRUCT(info)),stp);
       return;
 
+  // For ints and chars of low value, save space by replacing references to
+  //	these with closures with references to common, shared ones in the RTS.
+  //
+  // * Except when compiling into Windows DLLs which don't support cross-package
+  //	data references very well.
+  //
   case CONSTR_0_1:
-  { 
+  {   
+#if defined(__PIC__) && defined(mingw32_HOST_OS) 
+      copy_tag_nolock(p,info,q,sizeofW(StgHeader)+1,stp,tag);
+#else
       StgWord w = (StgWord)q->payload[0];
       if (info == Czh_con_info &&
 	  // unsigned, so always true:  (StgChar)w >= MIN_CHARLIKE &&  
@@ -578,6 +577,7 @@ loop:
       else {
           copy_tag_nolock(p,info,q,sizeofW(StgHeader)+1,stp,tag);
       }
+#endif
       return;
   }
 
@@ -703,8 +703,7 @@ loop:
 	goto loop;
       }
 
-      /* To evacuate a small TSO, we need to relocate the update frame
-       * list it contains.  
+      /* To evacuate a small TSO, we need to adjust the stack pointer
        */
       {
 	  StgTSO *new_tso;