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Re: [PATHCH] Disable inline asm for in-tree mpfr (PR69134)
- From: Bernd Schmidt <bschmidt at redhat dot com>
- To: Bernd Edlinger <bernd dot edlinger at hotmail dot de>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Cc: Richard Biener <rguenther at suse dot de>
- Date: Tue, 5 Jan 2016 13:58:31 +0100
- Subject: Re: [PATHCH] Disable inline asm for in-tree mpfr (PR69134)
- Authentication-results: sourceware.org; auth=none
- References: <HE1PR07MB0905C105ACF251FCE1780826E4F30 at HE1PR07MB0905 dot eurprd07 dot prod dot outlook dot com>
On 01/05/2016 09:44 AM, Bernd Edlinger wrote:
an in-tree mpfr build enables inline asm code, which makes the mips-bootstrap fail,
because at least mpfr 2.4.2 uses the "=h" constraint but in config/mips/constraints.md
we find: "Formerly the @code{hi} register. This constraint is no longer supported.".
Using asm code is generally not desirable for in-tree mpfr builds.
Why not?
So I looked for a way
to disable the asm code, and found it can be done, but differently than for in-tree gmp.
See the attached patch.
Fix mpfr instead not to use that constraint?
Bernd