2012-04-05 Richard Guenther <rguenther@suse.de>

	* tree-ssa-dse.c (dse_optimize_stmt): Remember the stmt
	basic-block before removing it.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@186164 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 8273970..d4db335 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2012-04-05  Richard Guenther  <rguenther@suse.de>
 
+       * tree-ssa-dse.c (dse_optimize_stmt): Remember the stmt
+       basic-block before removing it.
+
+2012-04-05  Richard Guenther  <rguenther@suse.de>
+
        * tree-ssanames.c (release_dead_ssa_names): Compact the SSA
        version namespace as we release the freelist.
 

diff --git a/gcc/tree-ssa-dse.c b/gcc/tree-ssa-dse.c
index 93ba425..1fdb26c 100644 (file)
--- a/gcc/tree-ssa-dse.c
+++ b/gcc/tree-ssa-dse.c
@@ -232,6 +232,8 @@ dse_optimize_stmt (gimple_stmt_iterator gsi)
                                gimple_get_lhs (use_stmt), 0)))
          || stmt_kills_ref_p (use_stmt, gimple_assign_lhs (stmt)))
        {
+         basic_block bb;
+
          /* If use_stmt is or might be a nop assignment, e.g. for
             struct { ... } S a, b, *p; ...
             b = a; b = b;
@@ -258,8 +260,9 @@ dse_optimize_stmt (gimple_stmt_iterator gsi)
          unlink_stmt_vdef (stmt);
 
          /* Remove the dead store.  */
+         bb = gimple_bb (stmt);
          if (gsi_remove (&gsi, true))
-           bitmap_set_bit (need_eh_cleanup, gimple_bb (stmt)->index);
+           bitmap_set_bit (need_eh_cleanup, bb->index);
 
          /* And release any SSA_NAMEs set in this statement back to the
             SSA_NAME manager.  */