Re: PR target/84743 adjust reassociation widths for power8/power9

2018-03-13 Thread Segher Boessenkool
On Mon, Mar 12, 2018 at 08:02:39PM -0500, Aaron Sawdey wrote: > Looking at CPU2017 results for different reassociation widths, things > have shifted since I last looked at this with CPU2006 in early gcc7 > timeframe. Best thing to do seems to be to set reassociation width to 1 > for all integer

Re: PR target/84743 adjust reassociation widths for power8/power9

2018-03-13 Thread Richard Biener
On Mon, 12 Mar 2018, Aaron Sawdey wrote: > Looking at CPU2017 results for different reassociation widths, things > have shifted since I last looked at this with CPU2006 in early gcc7 > timeframe. Best thing to do seems to be to set reassociation width to 1 > for all integer modes, which is what

PR target/84743 adjust reassociation widths for power8/power9

2018-03-12 Thread Aaron Sawdey
Looking at CPU2017 results for different reassociation widths, things have shifted since I last looked at this with CPU2006 in early gcc7 timeframe. Best thing to do seems to be to set reassociation width to 1 for all integer modes, which is what the attached patch does. I also tried setting