[PATCH] D48730: [DEBUG_INFO, NVPTX] Do not emit .debug_loc section.

[Alexey Bataev via Phabricator via llvm-commits]

ABataev added a comment.

In https://reviews.llvm.org/D48730#1147100, @probinson wrote:

> This seems rather drastic.  Nearly all variables will be reported as "optimized away" at any optimization level above -O0.
>  Have you looked at whether you can identify a single preferred location for the variable?


Thanks for the review, Paul. I agree this is not the best solution. But this is how NVidia toolchain works. It does not allow debug info in optimized code. Debug info may be emitted only at -O0. For other optimization levels, only line number info emission is allowed.
I tried to do this kind of analysis and sometimes we can do it, but I don't think this is necessary as debug info is allowed only for non-optimized code.


Repository:
  rL LLVM

https://reviews.llvm.org/D48730