[Bug rtl-optimization/16060] [3.5 Regression] ICE 'unrecognizable insn' with -ftracer

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-06-18 15:42 -------
I think this is a very recent regression caused by (or one of the followup):
2004-06-14  J"orn Rennecke <joern.rennecke@superh.com>

        * basic-block.h (could_fall_through): Declare.
        * cfganal.c (can_fallthru): Succeed if the target is EXIT_BLOCK_PTR.
        Fail if the source already has a fallthrough edge to the exit
        block pointer.
        (could_fall_through): New function.
        * cfgbuild.c (make_edges): Check if we already have a fallthrough
        edge to the exit block pointer.
        * cfglayout.c (fixup_fallthru_exit_predecessor): Check that it is
        not called before reload has completed.
        Handle special case of first block having a fall-through exit edge.
        (cfg_layout_finalize): Don't call it before reload or if we have
        rtl epilogues.
        (fixup_reorder_chain): A fall through to the exit block does not
        require the block to come last.  Add sanity checks.
        * cfgrtl.c (rtl_split_edge): Add special handling of fall through
        edges to the exit block.
        * function.c (cfglayout.h): #include.
        (thread_prologue_and_epilogue_insns): If we have neither return nor
        epilogue, but a fall through to the exit block from mid-function,
        force a non-fall-through exit.
        * Makefile.in (function.o): Depend on CFGLAYOUT_H. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org, joern dot rennecke at
                   |                            |superh dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16060