[PATCH] D48808: [CodeGen] Emit parallel_loop_access for each loop in the loop stack.

[Hal Finkel via Phabricator via cfe-commits]

hfinkel added a comment.

In https://reviews.llvm.org/D48808#1149862, @Meinersbur wrote:

> In https://reviews.llvm.org/D48808#1149845, @hfinkel wrote:
>
> > We specifically defined the metadata to support nested loops. The LangRef says, "The llvm.mem.parallel_loop_access metadata refers to a loop identifier, or metadata containing a list of loop identifiers for nested loops." To handle nested loops, we need to make the instruction metadata point to a list of loop IDs.
>
>
> Thanks for pointing me to it. I've not seen parallel_loop_access pointing to a list, so I didn't know it was possible.


Yea, well, we defined it to be possible. As to whether the backend will actually correctly read the metadata in that format, I don't know.


Repository:
  rC Clang

https://reviews.llvm.org/D48808