From: Ian Lynagh <igloo@earth.li>
Date: Fri, 6 Mar 2009 15:51:24 +0000 (+0000)
Subject: Make LDV_FILL_SLOP use a forwards loop rather than a backwards loop
X-Git-Tag: 2009-03-13~15
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=f20fe8deeee0353f8cdb27ca8031dd38b4b44ed1

Make LDV_FILL_SLOP use a forwards loop rather than a backwards loop
---

diff --git a/rts/LdvProfile.h b/rts/LdvProfile.h
index 5380c92..c61b010 100644
--- a/rts/LdvProfile.h
+++ b/rts/LdvProfile.h
@@ -24,11 +24,11 @@ extern void LdvCensusKillAll ( void );
 // Invoked when: 
 //   1) Hp is incremented and exceeds HpLim (in Updates.hc).
 //   2) copypart() is called (in GC.c).
-#define LDV_FILL_SLOP(from, howManyBackwards)	\
+#define LDV_FILL_SLOP(from, howMany)	\
   if (era > 0) {				\
     int i;					\
-    for (i = 1;i <= (howManyBackwards); i++)	\
-      ((StgWord *)(from))[-i] = 0;		\
+    for (i = 0;i < (howMany); i++)	\
+      ((StgWord *)(from))[i] = 0;		\
   }
 
 // Informs the LDV profiler that closure c has just been evacuated.
diff --git a/rts/sm/Evac.c b/rts/sm/Evac.c
index 01cc0d8..1c453fc 100644
--- a/rts/sm/Evac.c
+++ b/rts/sm/Evac.c
@@ -212,7 +212,7 @@ spin:
     SET_EVACUAEE_FOR_LDV(from, size_to_reserve);
     // fill the slop
     if (size_to_reserve - size_to_copy > 0)
-	LDV_FILL_SLOP(to + size_to_reserve, (int)(size_to_reserve - size_to_copy));
+	LDV_FILL_SLOP(to + size_to_copy, (int)(size_to_reserve - size_to_copy));
 #endif
 
     return rtsTrue;