[patch] Use simple LRA algorithm at -O0
Eric Botcazou
ebotcazou@adacore.com
Thu Dec 19 12:13:00 GMT 2019
> Simple LRA algorithms switch off hard register splitting, so there might
> a slightly bigger chance for occurring "can find reload register" error
> (e.g. when -O0 -fschedule-insns is used). But this error is still not
> solved in general case and in my experience the chance for this error is
> even bigger for optimized modes than for -O0 with simple LRA algorithms.
I see, thanks for the explanation. So this could occur for register varuables
or something along these lines?
> Saying that I believe the patch is OK for the trunk.
OK, let's see how it fares. We have been using it with a GCC 9 compiler for
some time, without any problem so far.
--
Eric Botcazou
More information about the Gcc-patches
mailing list