On Sun, 2024-01-21 at 19:14 -0700, Jeff Law wrote: > The change for pr111267 twiddled code generation for sh/pr59533-1.c > > We end up eliminating two comparisons, but require two shll instructions > to do so. And in a couple places we're using an addc sequence rather > than a subc sequence. This patch adjusts the expected codegen for the > test as all those are either a wash or a > > The fwprop change does cause some code regressions on the same test. > I'll file a distinct but for that issue. > > Pushed to the trunk, > > Jeff
Thanks for keeping an eye on this. Note that on SH4 the comparison insns are of MT type, which increases likelihood of parallel execution. So it's better to use those e.g. to shift out the MSB into T bit than shll. Cheers, Oleg
