[PATCH] D99048: [RFC][DebugInfo] Do not use the DBG_VALUE to calculate debug info of spill location

[Jeremy Morse via Phabricator via llvm-commits]

jmorse added a comment.

Hmmmm, do you have a reduced reproducer in llvm-ir that could go in a bug report? There are a number of things that could be going on here, and we can't be sure which without an example.

Given that the assembly you're using features a stack spill slot being shared by two values, I'd bet on stack slot colouring merging two slots and not modifying debug-info. Alternately, there are certain DBG_VALUEs that LiveDebugVariables produces which are hard for LiveDebugValues to interpret.

For the actual modification in this patch:

- I'm not sure what to make of the inliner codegen changes,
- The VarLocBasedImpl LiveDebugValues change will drop a lot of other variable locations, which is undesirable.


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  https://reviews.llvm.org/D99048/new/

https://reviews.llvm.org/D99048