libcompiler_rt Makefile.inc: update _Float16/__bf16 checks

Clang supports __bf16 for riscv from version 18.0 onwards, so update the
checks for it. While here, rewrite the checks so they are hopefull

libcompiler_rt Makefile.inc: update _Float16/__bf16 checks

Clang supports __bf16 for riscv from version 18.0 onwards, so update the
checks for it. While here, rewrite the checks so they are hopefully more
readable, and also handle gcc a little better.

In addition, define COMPILER_RT_HAS_FLOAT16 and COMPILER_RT_HAS_BFLOAT16
when these features should be available, since there are some parts in
compiler-rt that check for these defines.

PR: 276104
MFC after: 1 month

(cherry picked from commit f276adc148433d009d198c2ebccdd3303377e237)

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libcompiler_rt Makefile.inc: include bsd.compiler.mk to fix build

Apparently libgcc_s has always included libcompiler_rt's Makefile.inc
without first including bsd.compiler.mk, even though Makefile.

libcompiler_rt Makefile.inc: include bsd.compiler.mk to fix build

Apparently libgcc_s has always included libcompiler_rt's Makefile.inc
without first including bsd.compiler.mk, even though Makefile.inc used
COMPILER_TYPE already. It looks like we were just lucky that the
expression was not malformed.

PR: 276104
Reported by: Herbert J. Skuhra <[email protected]>
MFC after: 1 month

(cherry picked from commit 4c983a2886877a855ac3a2836b15d80356fbb8d4)

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libcompiler_rt Makefile.inc: don't build bfloat16 support for gcc < 13

Older versions of gcc produce "error: unknown type name '__bf16'".

PR: 276104
MFC after: 1 month

(cherry picked from commit

libcompiler_rt Makefile.inc: don't build bfloat16 support for gcc < 13

Older versions of gcc produce "error: unknown type name '__bf16'".

PR: 276104
MFC after: 1 month

(cherry picked from commit 2e226748a961329471f5b51483318b94c8735f34)

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libcompiler_rt Makefile.inc: remove debugging messages

PR: 276104
MFC after: 1 month

(cherry picked from commit d00b9344bb10a9a35b02df33475bec951dfccd78)

Merge llvm-project main llvmorg-18-init-15692-g007ed0dccd6a

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15692-g007ed0dccd6a.

Merge llvm-project main llvmorg-18-init-15692-g007ed0dccd6a

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15692-g007ed0dccd6a.

PR: 276104
MFC after: 1 month

(cherry picked from commit cb14a3fe5122c879eae1fb480ed7ce82a699ddb6)

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Merge llvm-project main llvmorg-18-init-15088-gd14ee76181fb

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15088-gd14ee76181fb.

Merge llvm-project main llvmorg-18-init-15088-gd14ee76181fb

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15088-gd14ee76181fb.

PR: 276104
MFC after: 1 month

(cherry picked from commit 5f757f3ff9144b609b3c433dfd370cc6bdc191ad)

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