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Re: [committed] [2/3] Converting the v850 port away from cc0 -- basic support for new scheme
- From: Eric Botcazou <ebotcazou at adacore dot com>
- To: Jeff Law <law at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Thu, 28 Jun 2018 13:20:24 +0200
- Subject: Re: [committed] [2/3] Converting the v850 port away from cc0 -- basic support for new scheme
- References: <90e9cdf4-9ddd-a3fd-6d5d-75bec16b9ab5@redhat.com>
> This is the bulk of the changes. With this change in installed the v850
> port should be using the new mechanism for condition code handling
> consistently, though without optimizing well.
Nice work! You need to update the v850 entry in:
https://gcc.gnu.org/backends.html
> One of the interesting v8 tidbits is that it was already using the new
> style for its floating point comparisons & branches. We actually get to
> simplify that a bit because we no longer need special branching patterns
> (FP comparison initially are stored in FCC, then get copied into the Z
> bit of CC_REG, then we use standard bz/bnz insns).
Does this mean that the 'F' in the above document is also obsolete?
--
Eric Botcazou