r159288 - in /trunk/gcc: ChangeLog cfgcleanup.c...

[jakub@gcc.gnu.org]

Author: jakub
Date: Tue May 11 18:17:43 2010
New Revision: 159288

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159288
Log:
	PR middle-end/44071
	* cfglayout.c (fixup_reorder_chain): Allow asm goto to have
	no fallthru edge.
	* cfgcleanup.c (try_optimize_cfg): When in cfglayout mode
	optimizing away empty bb with no successors, move over its
	footer chain to fallthru predecessor.
	* cfgrtl.c (patch_jump_insn): Update also REG_LABEL_OPERAND.
	(rtl_split_edge): For asm goto call patch_jump_insn even if
	splitting fallthru edge.

	* c-c++-common/asmgoto-4.c: New test.
	* gcc.target/i386/pr44071.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/asmgoto-4.c
    trunk/gcc/testsuite/gcc.target/i386/pr44071.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgcleanup.c
    trunk/gcc/cfglayout.c
    trunk/gcc/cfgrtl.c
    trunk/gcc/testsuite/ChangeLog