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FP/SIMD (#137592)
Add conditional compilation to add support for AArch64 without vector
registers and/or hardware FPUs by using the generic implementation.
**Context:**
A few functions were hard-coded to use vector registers/hardware FPUs.
This meant that libc would not compile on architectures that did not
support these features. This fix falls back on the generic
implementation if a feature is not supported.
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Summary:
Right now a lot of the memory functions error if we don't have specific
handling for them. This is weird because we have a generic
implementation that should just be used whenever someone hasn't written
a more optimized version. This allows us to use the `libc` headers with
more architectures from the `shared/` directory without worrying about
it breaking.
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The patch primarily cleans up some incorrect includes. The `LIBC_INLINE`
macro is defined in `attributes.h`, not `config.h`. There appears to be
no need to change the CMake and Bazel build files.
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This is a part of #97655.
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declaration" (#98593)
Reverts llvm/llvm-project#98075
bots are broken
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This is a part of #97655.
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Before this patch the compiler could generate unnecessary calls to the
selected implementation.
https://clang.llvm.org/docs/AttributeReference.html#flatten
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This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
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This patch mostly renames files so it better reflects the function they declare.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D155607
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