clayborg wrote:

I added Pavel Labath and David Blaikie in case they have any info on this. 

The story if we have some RiscV code that is creating location values for 
variables that use DW_OP_piece and they are using:
```
DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x28
```
to try and zero fill in the value. Not sure if this is common or if there is a 
better way to do the zero fill. But clang is producing this. as a series of 
`DW_OP_constu XXX, DW_OP_stack_value, DW_OP_piece 0x8` followed by the above 
expression.

https://github.com/llvm/llvm-project/pull/150149
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