[PATCH] D31972: Do not force the frame pointer by default for ARM EABI

[Christian Bruel via Phabricator via cfe-commits]

chrib added a comment.

OK, I have created a RFE tracker (BZ #32501). I will forward to cfe-dev.

Regarding the need to avoid table-based unwinding, the way to handle those request for an explicit frame pointer when not required by the ABI is to use -fno-omit-frame-pointer flag, catching up with the GCC behavior.

Also I'm not sure that the unwind table space is such an issue (for debugging) since they are not loadable. Other uses such as profiling is not be impacted by the change, and exceptions unwinder likelibgcc or libunwind should work without the frame pointer

I'll amend the patch to check for Darwin and Netbsd.


https://reviews.llvm.org/D31972