commit ed1b84dafd9b61496461d939f14fccade3284584
author Adhemerval Zanella <adhemerval.zanella@linaro.org> Thu Dec 03 15:29:45 2020 -0300
committer Copybara-Service <copybara-worker@google.com> Tue Dec 08 16:45:34 2020 -0800
tree 6f1d4411bfe1b8411ac3a4147251efcb038b55e0
parent 2f46c6070400eb4547db3aef9443461c852a0c83

[compiler-rt] [builtins] Use _Float16 on extendhfsf2, truncdfhf2 __truncsfhf2 if available

On AArch64 it allows use the native FP16 ABI (although libcalls are
not emitted for fptrunc/fpext lowering), while on other architectures
the expected current semantic is preserved (arm for instance).

For testing the _Float16 usage is enabled by architecture base,
currently only for arm, aarch64, and arm64.

This re-enabled revert done by https://reviews.llvm.org/rGb534beabeed3ba1777cd0ff9ce552d077e496726

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D92241

GitOrigin-RevId: c288715e952fe0e179d645a76b0f518e2403a42b