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Re: [PATHCH] Disable inline asm for in-tree mpfr (PR69134)


On Tue, 5 Jan 2016, Marc Glisse wrote:

On Tue, 5 Jan 2016, 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. 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.

Note that, at least with recent versions, if you configure gmp with --disable-assembly, the flag -DNO_ASM ends up in __GMP_CFLAGS (in gmp.h) and mpfr thus uses it automatically.

Hmm, that probably doesn't apply here since gcc passes its own CC and CFLAGS to mpfr, please ignore my message.

--
Marc Glisse


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