linux-kernel - Re: powerpc: clang-nightly: fatal error: error in backend: Trying to obtain a reserved register "r2".

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Message-ID: <20241025012237.GC740745@thelio-3990X>
Date: Thu, 24 Oct 2024 18:22:37 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Naresh Kamboju <naresh.kamboju@...aro.org>
Cc: clang-built-linux <llvm@...ts.linux.dev>,
	open list <linux-kernel@...r.kernel.org>,
	lkft-triage@...ts.linaro.org,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Dan Carpenter <dan.carpenter@...aro.org>,
	Arnd Bergmann <arnd@...db.de>,
	Anders Roxell <anders.roxell@...aro.org>
Subject: Re: powerpc: clang-nightly: fatal error: error in backend: Trying to
 obtain a reserved register "r2".

Hi Naresh,

On Thu, Oct 24, 2024 at 08:35:11PM +0530, Naresh Kamboju wrote:
> The powerpc clang-nightly version 20.0.0 build warnings / errors noticed on
> the Today's Linux next-20241024 tag.
...
> Build errors:
> ----------
> fatal error: error in backend: Trying to obtain a reserved register "r2".

Thanks for the report. I reported this upstream earlier, it should be
resolved now but it will take a little bit for that to filter into
clang-nightly from Debian.

https://github.com/llvm/llvm-project/pull/112603#issuecomment-2430709704

Cheers,
Nathan