[Dwarf-Discuss] modeling different address spaces

[Pedro Alves]

Hi there!

On 7/31/20 1:17 AM, Tye, Tony via Dwarf-Discuss wrote:
> For optimized code involving multiple address spaces it is possible to run into cases where the location of a source language variable requires multiple address spaces. For example, a source variable may be optimized and different pieces may be in different places including memory of multiple address spaces, registers, etc. Describing this situation with a DW_AT_address_class on a source language variable is not possible as it provides a single address space that applies to the variable as a whole. The concept of "address space" is not available on the expression stack where a composite location description is created.
> 
> ?
> 
> Instead, making address space a property of memory location descriptions and making location descriptions a first-class concept on the expression stack solves the problem in a general way and leads to other nice properties.

I am interesting in re-reading the document describing your changes, but the
url that was pasted on the list before:

 https://llvm.org/docs/AMDGPUDwarfProposalForHeterogeneousDebugging.html

is now returning "Not Found".  Did the document move somewhere else?

Pedro Alves