[PATCH] D75270: [DebugInfo] Do not emit entry values for composite locations

[David Stenberg via Phabricator via llvm-commits]

dstenb added a comment.

In D75270#1897396 <https://reviews.llvm.org/D75270#1897396>, @djtodoro wrote:

> > As far as I can tell GCC does not emit any
> > entry values / call sites in these cases, so we do not have something to
> > compare with, but the former seems like the more reasonable approach.
>
> I think as well. What about GDB side? Did GDB expect something like this? I though just running GDB over such case could be interesting to see if it accepts such scenario or not (I should find some time to play with that for sure).


GDB currently imposes the following restrictions for call site locations:

  Only single DW_OP_reg or DW_OP_fbreg is supported for DW_FORM_block* DW_AT_location is supported for DW_TAG_call_site child DIE

and the following for entry value operations:

  DWARF-2 expression error: DW_OP_entry_value is supported only for single DW_OP_reg* or for DW_OP_breg*(0)+DW_OP_deref*


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D75270/new/

https://reviews.llvm.org/D75270