PR bootstrap/54688

	* sched-deps.c (parse_add_or_inc): Remove MINUS handling.  Take
	STACK_GROWS_DOWNWARD into account.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@191838 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6f2fb9f..7851337 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-09-20  Bernd Schmidt  <bernds@codesourcery.com>
+
+       PR bootstrap/54688
+       * sched-deps.c (parse_add_or_inc): Remove MINUS handling.  Take
+       STACK_GROWS_DOWNWARD into account.
+
 2012-09-28  Jakub Jelinek  <jakub@redhat.com>
 
        PR target/54716

diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c
index f53cadd..6625a53 100644 (file)
--- a/gcc/sched-deps.c
+++ b/gcc/sched-deps.c
@@ -4600,8 +4600,7 @@ parse_add_or_inc (struct mem_inc_info *mii, rtx insn, bool before_mem)
   if (!REG_P (SET_DEST (pat)))
     return false;
 
-  if (GET_CODE (SET_SRC (pat)) != PLUS
-      && GET_CODE (SET_SRC (pat)) != MINUS)
+  if (GET_CODE (SET_SRC (pat)) != PLUS)
     return false;
 
   mii->inc_insn = insn;
@@ -4629,9 +4628,14 @@ parse_add_or_inc (struct mem_inc_info *mii, rtx insn, bool before_mem)
     }
 
   if (regs_equal && REGNO (SET_DEST (pat)) == STACK_POINTER_REGNUM)
-    /* Note that the sign has already been reversed for !before_mem.  */
-    return mii->inc_constant > 0;
-
+    {
+      /* Note that the sign has already been reversed for !before_mem.  */
+#ifdef STACK_GROWS_DOWNWARD
+      return mii->inc_constant > 0;
+#else
+      return mii->inc_constant < 0;
+#endif
+    }
   return true;
 }