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Re: [PATCH v2] PR target/30315 i386 missed optimization detecting overflows
- From: Rask Ingemann Lambertsen <rask at sygehus dot dk>
- To: Uros Bizjak <ubizjak at gmail dot com>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 7 Aug 2007 20:03:42 +0200
- Subject: Re: [PATCH v2] PR target/30315 i386 missed optimization detecting overflows
- References: <46B88CAC.2010709@gmail.com>
On Tue, Aug 07, 2007 at 05:15:56PM +0200, Uros Bizjak wrote:
> Hello!
>
> You should simply name a vector form of the pattern, like
> ("*sub<mode>3_xx_overflow1") in the ChangeLog, where quotes could be
> added according to your personal preference.
Ok.
> Regarding your patch - IMO the form of the pattern where you only
> clobber scratch register is missing.
It is. I'll fix that and update the testcase also.
--
Rask Ingemann Lambertsen