gcc/:

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

diff --git a/gcc/regcprop.c b/gcc/regcprop.c
index 039c8b0..0e11f97 100644 (file)
--- a/gcc/regcprop.c
+++ b/gcc/regcprop.c
@@ -35,6 +35,7 @@
 #include "recog.h"
 #include "flags.h"
 #include "toplev.h"
+#include "diagnostic-core.h"
 #include "obstack.h"
 #include "timevar.h"
 #include "tree-pass.h"
@@ -946,7 +947,14 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd)
 
     did_replacement:
       if (changed)
-       anything_changed = true;
+       {
+         anything_changed = true;
+
+         /* If something changed, perhaps further changes to earlier
+            DEBUG_INSNs can be applied.  */
+         if (vd->n_debug_insn_changes)
+           note_uses (&PATTERN (insn), cprop_find_used_regs, vd);
+       }
 
       /* Clobber call-clobbered registers.  */
       if (CALL_P (insn))