[PATCH] D39700: [Builtins] Do not use tailcall for Thumb1

[Weiming Zhao via Phabricator via llvm-commits]

weimingz added a comment.

If compiler-rt is to provide optimized version, then, should MUSL just forwards the calls like memcpy ->__aeabi_memcpy ? Because libc is usually appear first in linking order, a standard implementation in libc will hide the optimized version in compiler-rt.


https://reviews.llvm.org/D39700