[Dwarf-Discuss] modeling different address spaces

[Tye, Tony]

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.



Thanks,

-Tony

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.dwarfstd.org/pipermail/dwarf-discuss-dwarfstd.org/attachments/20200731/3436b097/attachment.html>