[libc-commits] [PATCH] D143389: [libc][doc] Update compiler

[Guillaume Chatelet via Phabricator via libc-commits]

gchatelet created this revision.
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Herald added subscribers: libc-commits, ecnelises, tschuett.
Herald added projects: libc-project, All.
gchatelet requested review of this revision.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D143389

Files:
  libc/docs/compiler_support.rst


Index: libc/docs/compiler_support.rst
===================================================================
--- libc/docs/compiler_support.rst
+++ libc/docs/compiler_support.rst
@@ -4,14 +4,17 @@
 Compiler Support
 ================
 
-As of now only ``Clang`` is fully supported.
+``LLVM libc`` compiles from both ``Clang`` and ``GCC`` but for maximum performance we recommand using ``Clang``.
 
-We are in the process of supporting ``GCC`` but some memory function implementations rely on `compiler intrinsics`__ that are not currently available in ``GCC``.
+Indeed, some memory function implementations rely on `compiler intrinsics`__ that are not currently available in ``GCC``.
 As such we cannot guarantee optimal performance for these functions.
 
 .. __: https://clang.llvm.org/docs/LanguageExtensions.html#guaranteed-inlined-copy
 
+For platforms where only ``GCC`` is natively available but maximum performance is required it is possible to bootstrap ``Clang`` with ``GCC`` and then use ``Clang`` to build ``LLVM libc``.
+
 Minimum version
 ===============
 
  - ``Clang 11``
+ - ``GCC 12.2```


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