jasonmolenda added a comment.

In D132510#3745412 <https://reviews.llvm.org/D132510#3745412>, @kasper81 wrote:

> @jasonmolenda the problem with original review is that we were waiting for 
> the wholesale support for 3.5 years, and it rendered into an impossible task 
> for the author. I don't want to make this one "all or none" kind of a deal as 
> well. This patch is neither bringing 100% lldb support nor regressing. It is 
> an incremental step forward to unblock a few more scenarios to initialize 
> SysV ABI.

Perfectly reasonable.  I don't have any problems with this patch, but you might 
want to add a little FIXME comment in CreateDefaultUnwindPlan noting that it 
should create a frame-pointer-based unwind plan a la any of the ARM ABI 
plugins, that this unwind plan is only correct on the first instruction or a 
leaf function that does not set up a stack frame.  I'd also duplicate that 
method under the name CreateFunctionEntryUnwindPlan() because I believe this is 
a correct implementation of that ABI method.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D132510/new/

https://reviews.llvm.org/D132510

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