On 11/6/18 7:05 AM, Martin Liška wrote: > Hi. > > The patch is adding a check overflow in eliminate_partially_redundant_load. > Question is whether the usage of conditional compilation of > __builtin_mul_overflow > is fine? > > Thanks, > Martin > > gcc/ChangeLog: > > 2018-11-06 Martin Liska <mli...@suse.cz> > > PR rtl-optimization/87868 > * postreload-gcse.c (eliminate_partially_redundant_load): Set > threshold to max_count if we would overflow. > * profile-count.h: Make max_count a public constant. OK. Though I do worry about how many of these things we'll have to sprinkle over the sources over time. I suspect there's all kinds of overflows just waiting to happen, some are obviously more important than others.
jeff
