add a hash_set based on hash_table

This allows us to replace the usage of pointer_set outside of
pointer_map with a nicer interface.

gcc/ada/

	* gcc-interface/trans.c: Use hash_set instead of pointer_set.

gcc/c-family/

	* c-gimplify.c: Use hash_set instead of pointer_set.

gcc/c/

	* c-decl.c: Use hash_set instead of pointer_set.

gcc/cp/

	* class.c, cp-gimplify.c, cp-tree.h, decl.c, decl2.c, error.c,
	method.c, name-lookup.c, pt.c, semantics.c, tree.c: Use hash_set
	instead of pointer_set.

gcc/fortran/

	* openmp.c, trans-decl.c: Use hash_set instead of pointer_set.

gcc/

	* hash-set.h: new File.
	* cfgexpand.c, cfgloop.c, cgraph.c, cgraphbuild.c, cgraphunit.c,
	cprop.c, cse.c, gimple-walk.c, gimple-walk.h, gimplify.c, godump.c,
	ipa-devirt.c, ipa-pure-const.c, ipa-visibility.c, ipa.c, lto-cgraph.c,
	lto-streamer-out.c, stmt.c, tree-cfg.c, tree-core.h, tree-eh.c,
	tree-inline.c, tree-inline.h, tree-nested.c, tree-pretty-print.c,
	tree-ssa-loop-niter.c, tree-ssa-phiopt.c, tree-ssa-threadedge.c,
	tree-ssa-uninit.c, tree.c, tree.h, value-prof.c, varasm.c,
	varpool.c: Use hash_set instead of pointer_set.

gcc/lto/

	* lto-partition.c, lto-partition.h: Use hash_set instead of
	pointer_set.

From-SVN: r213516

1 files changed, 6 insertions, 6 deletions

diff --git a/gcc/cse.c b/gcc/cse.c
index 34f9364..dd9a076 100644
--- a/gcc/cse.c
+++ b/gcc/cse.c
@@ -41,7 +41,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-pass.h"
 #include "df.h"
 #include "dbgcnt.h"
-#include "pointer-set.h"
+#include "hash-set.h"
 
 /* The basic idea of common subexpression elimination is to go
    through the code, keeping a record of expressions that would
@@ -2906,7 +2906,7 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2,
 		      enum machine_mode *pmode1, enum machine_mode *pmode2)
 {
   rtx arg1, arg2;
-  struct pointer_set_t *visited = NULL;
+  hash_set<rtx> *visited = NULL;
   /* Set nonzero when we find something of interest.  */
   rtx x = NULL;
 
@@ -2923,8 +2923,8 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2,
       if (x)
 	{
 	  if (!visited)
-	    visited = pointer_set_create ();
-	  pointer_set_insert (visited, x);
+	    visited = new hash_set<rtx>;
+	  visited->add (x);
 	  x = 0;
 	}
 
@@ -3005,7 +3005,7 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2,
 	    continue;
 
 	  /* If it's a comparison we've used before, skip it.  */
-	  if (visited && pointer_set_contains (visited, p->exp))
+	  if (visited && visited->contains (p->exp))
 	    continue;
 
 	  if (GET_CODE (p->exp) == COMPARE
@@ -3087,7 +3087,7 @@ find_comparison_args (enum rtx_code code, rtx *parg1, rtx *parg2,
   *parg1 = fold_rtx (arg1, 0), *parg2 = fold_rtx (arg2, 0);
 
   if (visited)
-    pointer_set_destroy (visited);
+    delete visited;
   return code;
 }