[PATCH] D99741: [RISCV][Clang] Add some RVV Floating-Point intrinsic functions. (vfclass, vfmerge, vfrec7, vfrsqrt7, vfsqrt)

Wed Apr 14 17:01:45 PDT 2021

craig.topper added a comment.

In D99741#2690124 <https://reviews.llvm.org/D99741#2690124>, @thakis wrote:

> One of the ten commits that landed here (https://github.com/llvm/llvm-project/compare/a3bfddbb6a27...59d5b8c27b43), this being one of them, slowed down check-clang by over 20%: https://bugs.llvm.org/show_bug.cgi?id=49962
>
> Since recovering test runtime regressions is very difficult, it's probably a good idea to revert this first and then reland in smaller chunks to see which of the commits causes the problem (?)

The fact that we're running the optimization pipeline in these tests might be to blame. Might also be that riscv_vector.h is currently about 71000 lines which probably isn't quick to parse.

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https://reviews.llvm.org/D99741