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Re: [PATCH v2 04/13] compiler.h: remove GCC < 3 __builtin_expect fallbac

From: Peter Maydell
Subject: Re: [PATCH v2 04/13] compiler.h: remove GCC < 3 __builtin_expect fallback
Date: Thu, 26 Nov 2020 11:55:22 +0000

On Thu, 26 Nov 2020 at 11:29, <marcandre.lureau@redhat.com> wrote:
> From: Marc-André Lureau <marcandre.lureau@redhat.com>
> Since commit efc6c07 ("configure: Add a test for the minimum compiler
> version"), QEMU explicitely depends on GCC >= 4.8.
> (clang >= 3.8 advertizes itself as GCC >= 4.2 compatible)

All clangs always have advertised themselves as gcc-4.2-compatible,
as far as I'm aware. 3.4 is the version we need to care about,
I think it probably supported __builtin_expect(). (A test
of the whole series with gcc 4.8 and clang 3.4 would confirm this.)

-- PMM

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