[Bug c/105311] [12]Still generate memset even with -fno-tree-loop-distribute-patterns

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105311

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jsm28 at gcc dot gnu.org
           Keywords|                            |documentation

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
All memcpy, memmove and memset are eventually emitted for aggregate copying and
initialization.  Targets may choose to force inline them but there is indeed no
libgcc fallback with -ffreestanding.

Our -ffreestanding documentation ought to reflect this I guess.  Joseph, do you
know of other library routines GCC requires but does not provide even with
-ffreestanding?  There might or might not be a subset of the C standard library
that is supposed to be available in a freestanding implementation - like good
parts of the math runtime, and GCC likely doesn't diagnose usage with
-ffreestanding but assumes the user provides the necessary implementations via
custom libraries.