GCC 12.1 Released

[Pramesh Gupta]

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On Fri, 6 May 2022, 14:57 Richard Biener via gcc-announce, <
gcc-announce@gcc.gnu.org> wrote:

>
> The GCC developers are proud to announce another major GCC release, 12.1.
>
> This year we celebrated the 35th anniversary of the first GCC beta release
> and this month we will celebrate 35 years since the GCC 1.0 release!
>
> This release deprecates support for the STABS debugging format and
> introduces support for the CTF debugging format [1].  The C and C++
> frontends continue to advance with extending support for features
> in the upcoming C2X and C++23 standards and the C++ standard library
> improves support for the experimental C++20 and C++23 parts.
> The Fortran frontend now fully supports TS 29113 for interoperability with
> C.
>
> GCC now understands clangs __builtin_shufflevector extension making
> it easier to share generic vector code.  Starting with GCC 12
> vectorization is enabled at the -O2 optimization level using the
> very-cheap cost model which puts extra constraints on code size expansion.
>
> On the security side GCC can now initialize stack variables implicitly
> using -ftrivial-auto-var-init to help tracking down and mitigating
> uninitialized stack variable flaws.  The C and C++ frontends now support
> __builtin_dynamic_object_size compatible with the clang extension.
> The x86 backend gained mitigations against straight line speculation
> with -mharden-sls.  The experimental Static Analyzer gained uninitialized
> variable use detection and many other improvements.
>
> The x86 backend gained support for AVX512-FP16 via _Float16.
> The BPF backend now supports CO-RE, the RISC-V backend gained support
> for many new ISA extensions.
>
> Some code that compiled successfully with older GCC versions might require
> source changes, see http://gcc.gnu.org/gcc-12/porting_to.html for
> details.
>
> See
>
>   https://gcc.gnu.org/gcc-12/changes.html
>
> for more information about changes in GCC 12.1.
>
> This release is available from the WWW and FTP servers listed here:
>
>  https://sourceware.org/pub/gcc/releases/gcc-12.1.0/
>  https://gcc.gnu.org/mirrors.html
>
> The release is in the gcc-12.1.0/ subdirectory.
>
> If you encounter difficulties using GCC 12.1, please do not contact me
> directly.  Instead, please visit http://gcc.gnu.org for information about
> getting help.
>
> Driving a leading free software project such as GCC would not be possible
> without support from its many contributors.
> Not only its developers, but especially its regular testers and users which
> contribute to its high quality.  The list of individuals
> is too large to thank individually!
>
> ----
>
> [1] See https://ctfstd.org/
>