On 08/31/12 13:50, Greta Yorsh wrote:
Ping
http://gcc.gnu.org/ml/gcc-patches/2012-07/msg01025.html
________________________________________
From: Greta Yorsh [greta.yo...@arm.com]
Sent: Friday, July 20, 2012 7:28 PM
To: GCC Patches
Cc: Richard Earnshaw; Ramana Radhakrishnan
Subject: [Patch,ARM] unwind in epilogue ignore dwarf info
The final pass of gcc uses dwarf information to generate unwind tables and
directives (e.g., with command line option -fexceptions). Dwarf information
generated for epilogues should be ignored when generating unwind info,
because the ARM ABI only allows unwind at procedure boundaries. This patch
adds a flag unwind_in_epilogue for it. It wasn't needed in the past, because
there was no dwarf info generated for epilogues, but recent patches for
epilogue generation in RTL added it.
Hmmm, slightly uneasy about this patch.
Is there a chance that for a particular function
arm_unwind_function_begin_epilogue gets called but
arm_asm_emit_except_personality is not for some reason ? I'm worried a
bit about stale values of unwind_epilogue I suppose across functions.
I'd prefer this to be in machine_function in arm.h .
regards,
Ramana
