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[Bug c/39252] Request new feature __builtin_unreachable ()
- From: "daney at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Jun 2009 23:55:58 -0000
- Subject: [Bug c/39252] Request new feature __builtin_unreachable ()
- References: <bug-39252-3556@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #13 from daney at gcc dot gnu dot org 2009-06-11 23:55 -------
Subject: Bug 39252
Author: daney
Date: Thu Jun 11 23:55:45 2009
New Revision: 148403
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=148403
Log:
2009-06-11 David Daney <ddaney@caviumnetworks.com>
PR c/39252
* doc/extend.texi ( __builtin_unreachable): Document new builtin.
* builtins.c (expand_builtin_unreachable): New function.
(expand_builtin): Handle BUILT_IN_UNREACHABLE case.
* builtins.def (BUILT_IN_UNREACHABLE): Add new builtin.
* cfgcleanup.c (try_optimize_cfg): Delete empty blocks with no
successors.
* cfgrtl.c (rtl_verify_flow_info): Handle empty blocks when
searching for missing barriers.
2009-06-11 David Daney <ddaney@caviumnetworks.com>
PR c/39252
* gcc.dg/builtin-unreachable-1.c: New test.
* gcc.dg/builtin-unreachable-2.c: Same.
Added:
trunk/gcc/testsuite/gcc.dg/builtin-unreachable-1.c
trunk/gcc/testsuite/gcc.dg/builtin-unreachable-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/builtins.c
trunk/gcc/builtins.def
trunk/gcc/cfgcleanup.c
trunk/gcc/cfgrtl.c
trunk/gcc/doc/extend.texi
trunk/gcc/system.h
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39252