[Bug rtl-optimization/40445] g++ void f() { __builtin_unreachable(); }

[daney at gcc dot gnu dot org]

------- Comment #5 from daney at gcc dot gnu dot org  2009-07-25 20:25 -------
Subject: Bug 40445

Author: daney
Date: Sat Jul 25 20:25:18 2009
New Revision: 150090

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150090
Log:
2009-07-25  David Daney  <dda...@caviumnetworks.com>

        PR rtl-optimization/40445
        * emit-rtl.c (next_nonnote_insn_bb): New function.
        * rtl.h (next_nonnote_insn_bb): Declare new function.
        * cfgcleanup.c (try_optimize_cfg): Don't remove an empty block
        with no successors that is the successor of the ENTRY_BLOCK.
        Continue from the top after removing an empty fallthrough block.
        * cfgrtl.c (get_last_bb_insn): Call next_nonnote_insn_bb instead
        of next_nonnote_insn.

2009-07-25  David Daney  <dda...@caviumnetworks.com>

        PR rtl-optimization/40445
        * g++.dg/other/builtin-unreachable-1.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/other/builtin-unreachable-1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cfgcleanup.c
    trunk/gcc/cfgrtl.c
    trunk/gcc/emit-rtl.c
    trunk/gcc/rtl.h
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40445