* regrename.c (copyprop_hardreg_forward): Do not keep register

value data live across abnormal call or eh egdes.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@48043 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 114d604..56fd127 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2001-12-15  Ulrich Weigand  <uweigand@de.ibm.com>
+
+       * regrename.c (copyprop_hardreg_forward): Do not keep register
+       value data live across abnormal call or eh egdes.
+
 Sat Dec 15 08:29:45 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
        * expr.c (highest_pow2_factor, case INTEGER_CST): Return

diff --git a/gcc/regrename.c b/gcc/regrename.c
index 6014274..3236a43 100644 (file)
--- a/gcc/regrename.c
+++ b/gcc/regrename.c
@@ -1626,6 +1626,7 @@ copyprop_hardreg_forward ()
       /* ??? Ought to use more intelligent queueing of blocks.  */
       if (bb->pred
          && ! bb->pred->pred_next 
+         && ! (bb->pred->flags & (EDGE_ABNORMAL_CALL | EDGE_EH))
          && bb->pred->src->index != ENTRY_BLOCK
          && bb->pred->src->index < b)
        all_vd[b] = all_vd[bb->pred->src->index];