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Re: MIPS elimate trap-if-zero instruction if possible for divisions
- From: Richard Sandiford <rdsandiford at googlemail dot com>
- To: Graham Stott <graham dot stott at btinternet dot com>
- Cc: Jeff Law <law at redhat dot com>, "gcc-patches\ at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Tue, 09 Jul 2013 18:38:40 +0100
- Subject: Re: MIPS elimate trap-if-zero instruction if possible for divisions
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Graham Stott <graham.stott@btinternet.com> writes:
> Isn't that to late for VRP its run twice before expand pass.
Exactly why I said:
With Jeff's comment about VRP though, it sounds like he had different
ideas
:-) I suggested expand because I'd have expected the rtl optimisers to
deal with the cases your patterns were handling.
Richard