[llvm] [TLI] Add basic support for fdim libcall (PR #108702)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> hi @dtcxzyw i am following your PRs for this issue #99497 i annotated the testcases manually there aren't any scripts/commands that i should be using instead, right?

Yeah. Tests without header comment `; NOTE: Assertions have been autogenerated by XXX` are maintained manually.


https://github.com/llvm/llvm-project/pull/108702