Re: Make fix for PR 83965 handle SLP reduction chains

2018-02-26 Thread Richard Biener
On Mon, Feb 26, 2018 at 3:37 PM, Richard Sandiford wrote: > Richard Biener writes: >> On Tue, Feb 20, 2018 at 5:53 PM, Richard Sandiford >> wrote: >>> This patch prevents pattern-matching of fold-left SLP reduction chains, >>> which the previous patch for 83965 didn't handle properly. It only >

Re: Make fix for PR 83965 handle SLP reduction chains

2018-02-26 Thread Richard Sandiford
Richard Biener writes: > On Tue, Feb 20, 2018 at 5:53 PM, Richard Sandiford > wrote: >> This patch prevents pattern-matching of fold-left SLP reduction chains, >> which the previous patch for 83965 didn't handle properly. It only >> stops the last statement in the group from being matched, but t

Re: Make fix for PR 83965 handle SLP reduction chains

2018-02-26 Thread Richard Biener
On Tue, Feb 20, 2018 at 5:53 PM, Richard Sandiford wrote: > This patch prevents pattern-matching of fold-left SLP reduction chains, > which the previous patch for 83965 didn't handle properly. It only > stops the last statement in the group from being matched, but that's > enough to cause the gro