r148403 - in /trunk/gcc: ChangeLog builtins.c b...

[daney@gcc.gnu.org]

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