2011-01-14 Tobias Burnus <burnus@net-b.de>

[pf3gnuchains/gcc-fork.git] / gcc / postreload.c

diff --git a/gcc/postreload.c b/gcc/postreload.c
index 1772c9e..15c22e2 100644 (file)
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -41,7 +41,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "output.h"
 #include "cselib.h"
 #include "diagnostic-core.h"
-#include "toplev.h"
 #include "except.h"
 #include "tree.h"
 #include "target.h"
@@ -1409,6 +1408,32 @@ reload_combine_note_store (rtx dst, const_rtx set, void *data ATTRIBUTE_UNUSED)
                                   GET_MODE (dst));
       dst = SUBREG_REG (dst);
     }
+
+  /* Some targets do argument pushes without adding REG_INC notes.  */
+
+  if (MEM_P (dst))
+    {
+      dst = XEXP (dst, 0);
+      if (GET_CODE (dst) == PRE_INC || GET_CODE (dst) == POST_INC
+         || GET_CODE (dst) == PRE_DEC || GET_CODE (dst) == POST_DEC
+         || GET_CODE (dst) == PRE_MODIFY || GET_CODE (dst) == POST_MODIFY)
+       {
+         regno = REGNO (XEXP (dst, 0));
+         mode = GET_MODE (XEXP (dst, 0));
+         for (i = hard_regno_nregs[regno][mode] - 1 + regno; i >= regno; i--)
+           {
+             /* We could probably do better, but for now mark the register
+                as used in an unknown fashion and set/clobbered at this
+                insn.  */
+             reg_state[i].use_index = -1;
+             reg_state[i].store_ruid = reload_combine_ruid;
+             reg_state[i].real_store_ruid = reload_combine_ruid;
+           }
+       }
+      else
+        return;
+    }
+
   if (!REG_P (dst))
     return;
   regno += REGNO (dst);