[PATCH 3/X] libsanitizer: Add option to bootstrap using HWASAN

[Richard Sandiford]

Matthew Malcomson <matthew.malcomson@arm.com> writes:
> diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
> index d581a34653f61a440b3c3b832836fe109e2fbd08..25d041fcbb1f7c16f7ac47b7b5d4ea8308c6f69c 100644
> --- a/gcc/doc/install.texi
> +++ b/gcc/doc/install.texi
> @@ -2767,6 +2767,11 @@ the build tree.
>  Compiles GCC itself using Address Sanitization in order to catch invalid memory
>  accesses within the GCC code.
>  
> +@item @samp{bootstrap-hwasan}
> +Compiles GCC itself using HWAddress Sanitization in order to catch invalid
> +memory accesses within the GCC code.  This option is only available on AArch64
> +targets running a Linux kernel that supports the required ABI (5.4 or later).

I'd suggest rewording the last sentence, since it isn't clear whether 5.4
is an ABI version or a Linux kernel version.  Maybe something like:

  This option is only available on AArch64 systems that are running Linux
  kernel version 5.4 or later.

Not sure how good that is, suggestions for something better welcome.

Looks good otherwise.

Thanks,
Richard