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Re: [PATCH RFC]Pair load store instructions using a generic scheduling fusion pass
- From: Mike Stump <mikestump at comcast dot net>
- To: Jeff Law <law at redhat dot com>
- Cc: "Bin.Cheng" <amker dot cheng at gmail dot com>, Richard Biener <richard dot guenther at gmail dot com>, Bin Cheng <bin dot cheng at arm dot com>, gcc-patches List <gcc-patches at gcc dot gnu dot org>
- Date: Thu, 9 Oct 2014 04:14:12 -0700
- Subject: Re: [PATCH RFC]Pair load store instructions using a generic scheduling fusion pass
- Authentication-results: sourceware.org; auth=none
- References: <000001cfdc90$1d95c670$58c15350$ at arm dot com> <781A4573-F7ED-4ABD-B222-76F2044E641A at comcast dot net> <CAHFci29=8H_qQSCwUUMWgdyX-DQziE8hSagM7CDNBEMkrXo+3w at mail dot gmail dot com> <CAFiYyc14oz1x309XF08hZHN1UbfuP9PxMQH0x5V5GBDePN4Cvw at mail dot gmail dot com> <6EBE944B-D1A5-4DF5-A2EC-9927690AB7B0 at comcast dot net> <CAHFci2-nbyc_GNt08EcA_7bPzW12YtrdgoeArF0-kcX861ZW9Q at mail dot gmail dot com> <5434CB79 dot 3010100 at redhat dot com>
On Oct 7, 2014, at 10:28 PM, Jeff Law <law@redhat.com> wrote:
> It's certainly advantageous for sched2 to split insns that generate multiple instructions.
So, on my port, I have a load multiple that is just one instruction, and it is a single clock cycle (to enque it).