Refactor graphite-sese-to-poly, sese.h, graphite-poly.h

Now that scop contains a list of all the basic blocks inside, it makes sense to
iterate over only those basic blocks in
graphite-sese-to-poly.c:rewrite_reductions_out_of_ssa,rewrite_cross_bb_scalar_deps_out_of_ssa

Passes regtest and bootstrap.

gcc/ChangeLog:

2015-10-20  Aditya Kumar  <hiraditya@msn.com>

        * graphite-poly.h (struct dr_info): Added invalid_alias_set number.
        (operator=): Removed.
        (dr_info): Make alias_set number the last argument with default value of invalid_alias_set.
        * graphite-sese-to-poly.c (build_scop_drs): Update constructor of dr_info.
        (rewrite_reductions_out_of_ssa): Iterate only through the basic blocks which are inside region.
        (rewrite_cross_bb_scalar_deps_out_of_ssa): Same.
        * sese.h (struct sese_l): Removed assignment operator.
        (split_region_for_bb): Removed dead code.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229136 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 10 insertions, 16 deletions

diff --git a/gcc/graphite-poly.h b/gcc/graphite-poly.h
index 721e9142088..5298f8547f9 100644
--- a/gcc/graphite-poly.h
+++ b/gcc/graphite-poly.h
@@ -373,29 +373,23 @@ pbb_set_black_box (poly_bb_p pbb, gimple_poly_bb_p black_box)
 
 struct dr_info
 {
+  enum {
+    invalid_alias_set = -1
+  };
   /* The data reference.  */
   data_reference_p dr;
 
-  /* ALIAS_SET is the SCC number assigned by a graph_dfs of the alias graph.  -1
-     is an invalid alias set.  */
-  int alias_set;
-
   /* The polyhedral BB containing this DR.  */
   poly_bb_p pbb;
 
+  /* ALIAS_SET is the SCC number assigned by a graph_dfs of the alias graph.
+     -1 is an invalid alias set.  */
+  int alias_set;
+
   /* Construct a DR_INFO from a data reference DR, an ALIAS_SET, and a PBB.  */
-  dr_info (data_reference_p dr, int alias_set, poly_bb_p pbb)
-    : dr (dr), alias_set (alias_set), pbb (pbb) {}
-
-  /* Assignment operator, to be able to iterate over a vec of these objects.  */
-  const dr_info &
-  operator= (const dr_info &p)
-  {
-    dr = p.dr;
-    alias_set = p.alias_set;
-    pbb = p.pbb;
-    return *this;
-  }
+  dr_info (data_reference_p dr, poly_bb_p pbb,
+	   int alias_set = invalid_alias_set)
+    : dr (dr), pbb (pbb), alias_set (alias_set) {}
 };
 
 /* A SCOP is a Static Control Part of the program, simple enough to be