2010-04-30 Richard Guenther <rguenther@suse.de>

	* builtins.c (fold_builtin_1): Delete free (0).

	* gcc.dg/tree-ssa/builtin-free.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158923 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6abbab3..d20e202 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2010-04-30  Richard Guenther  <rguenther@suse.de>
+
+       * builtins.c (fold_builtin_1): Delete free (0).
+

 2010-04-29  Jan HUbicka  <jh@suse.cz>
 
        * gengtype.c (open_base_files): Add lto-streamer.h
 2010-04-29  Jan HUbicka  <jh@suse.cz>
 
        * gengtype.c (open_base_files): Add lto-streamer.h

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 997c13a..b514ae0 100644 (file)
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -9817,7 +9817,6 @@ fold_builtin_1 (location_t loc, tree fndecl, tree arg0, bool ignore)
   enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
   switch (fcode)
     {
   enum built_in_function fcode = DECL_FUNCTION_CODE (fndecl);
   switch (fcode)
     {

-

     case BUILT_IN_CONSTANT_P:
       {
        tree val = fold_builtin_constant_p (arg0);
     case BUILT_IN_CONSTANT_P:
       {
        tree val = fold_builtin_constant_p (arg0);


@@ -10199,6 +10198,11 @@ fold_builtin_1 (location_t loc, tree fndecl, tree arg0, bool ignore)
     case BUILT_IN_VPRINTF:
       return fold_builtin_printf (loc, fndecl, arg0, NULL_TREE, ignore, fcode);
 
     case BUILT_IN_VPRINTF:
       return fold_builtin_printf (loc, fndecl, arg0, NULL_TREE, ignore, fcode);
 

+    case BUILT_IN_FREE:
+      if (integer_zerop (arg0))
+       return build_empty_stmt (loc);
+      break;
+

     default:
       break;
     }
     default:
       break;
     }

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b2b0e51..45f0023 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2010-04-30  Richard Guenther  <rguenther@suse.de>
+
+       * gcc.dg/tree-ssa/builtin-free.c: New testcase.
+

 2010-04-29  Fabien Chêne  <fabien.chene@gmail.com>
 
        PR c++/43890
 2010-04-29  Fabien Chêne  <fabien.chene@gmail.com>
 
        PR c++/43890