Re: [Gc] GCC atomics for mips patch

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Hi,

On Thu, 2016-04-14 at 22:42 +0300, Ivan Maidanski wrote:
> Hello Frank and James,
>=20
> I have created a patch to use C11 atomics for MIPS (32/64), it was
> not difficult for me to create it and check compilation with Clang
> and GCC (using NDK r10e) but I don't have the H/W to test it. I have
> looked thru the generated assembly, it looks ok at a glance.
>=20
> I have hard-coded gcc 4.9+ and clang 3.5+ versions to use gcc atomics
> instead of asm (these are just the compiler versions I have tested
> the patch with) - this is probably a bit restrictive but I don't know
> whether old compilers generate the correct code.

I can't remember the exact versions mips support was added I'm afraid,
but those versions should be fine. The tests I've done are with Debian
Sid (gcc 5).

> Could you please test the patch on some multi-core MIPS H/W? (Ideally
> to test bdwgc with the patch as well.)
> https://github.com/ivmai/libatomic_ops/commit/2317eaf48d677d30e2b34e46517=
c72fa004e8a54 =C2=A0
> (or checkout development branch=C2=A0
> https://github.com/ivmai/libatomic_ops/commits/atomics-exp )

I built and ran the testsuite for both libatomic-ops and bdwgc (master
branch) on etler.debian.org (4 cores, little endian). All the tests
seem to pass! I tried 64-bit as well and the tests pass there too.

Thanks,
James
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