compiler-rt: improve _Float16 and __bf16 guards #2384
Merged
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Tighten the bounds on enabling _Float16 and __bf16 to not include development 15.0.0 and development versions there of (including the release/15.x branch point). __bf16 support was enabled very late in the 15.0.0 release cycle, just prior to rc3. This caused problems building amd64 targets with a Morello LLVM compiler synced to near the 15.x branch point.