2f48765b45
Follow-up on the `-mllvm --tail-merge-threshold=0` removal promised in aeccc16497a84d61200f7ccfa3864096349260d3 (see b2a9ea4420127d10b18ae648b16757665f8bbd7c commit message on why we don't need this in Bazel, and will only keep in AArch64-specific compile flags in CMake build).