[PATCH] D114099: Enable `_Float16` type support on X86 without the avx512fp16 flag

[Sylvestre Ledru via Phabricator via cfe-commits]

sylvestre.ledru added a comment.

As mentioned in 
https://github.com/llvm/llvm-project/commit/6623c02d70c3732dbea59c6d79c69501baf9627b#commitcomment-60741407

This change is breaking build of compiler-rt on Ubuntu bionic and others on amd64:

  "/build/llvm-toolchain-snapshot-14~++20211119100719+d729f4c38fca/build-llvm/./bin/clang" --target=x86_64-pc-linux-gnu -DVISIBILITY_HIDDEN  -fstack-protector-strong -Wformat -Werror=format-security -Wno-unused-command-line-argument -Wdate-time -D_FORTIFY_SOURCE=2 -O3 -DNDEBUG  -m32 -DCOMPILER_RT_HAS_FLOAT16 -std=c11 -fPIC -fno-builtin -fvisibility=hidden -fomit-frame-pointer -MD -MT CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o -MF CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o.d -o CMakeFiles/clang_rt.builtins-i386.dir/extendhfsf2.c.o -c '/build/llvm-toolchain-snapshot-14~++20211119100719+d729f4c38fca/compiler-rt/lib/builtins/extendhfsf2.c'
  In file included from /build/llvm-toolchain-snapshot-14~++20211119100719+d729f4c38fca/compiler-rt/lib/builtins/extendhfsf2.c:11:
  In file included from /build/llvm-toolchain-snapshot-14~++20211119100719+d729f4c38fca/compiler-rt/lib/builtins/fp_extend_impl.inc:38:
  /build/llvm-toolchain-snapshot-14~++20211119100719+d729f4c38fca/compiler-rt/lib/builtins/fp_extend.h:44:9: error: _Float16 is not supported on this target
  typedef _Float16 src_t;
          ^
  1 error generated.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D114099/new/

https://reviews.llvm.org/D114099