Re: [PATCH] add 'rs6000_in_function_epilogue_p()' (Revised)

Jim Blandy
2005-12-02T21:44:53Z

On 12/2/05, Daniel Jacobowitz <drow@false.org> wrote:
> We don't even use CFI for PowerPC, still, because of the debacle with
> incorrect register numbers recently fixed in GCC.

Oh! That scotches that idea, then. Never mind, Paul.

The "Right Fix" for that bug would be to make the unwinding more
reliable. But pre-CFI we've never really been able to unwind very
well within epilogues. Daniel had aesthetic concerns about the patch,
but it seems like the in_function_epilogue method is the only
practical fix, whatever qualities its actual definition might have.