ср, 6 нояб. 2024 г. в 12:58, Georg-Johann Lay <a...@gjlay.de>: > > For operations like X o= CST, regalloc may spill l-reg X to a d-reg: > D = X > D o= CST > X = D > where it is better to instead > D = CST > X o= D > This patch adds an according RTL peephole. > > Ok for trunk?
Please apply. Denis. > > Johann > > -- > > AVR: Add an RTL peephole to tweak lower_reg:QI o= cst. > > For operations like X o= CST, regalloc may spill l-reg X to a d-reg: > D = X > D o= CST > X = D > where it is better to instead > D = CST > X o= D > This patch adds an according RTL peephole. > > gcc/ > * config/avr/avr.md: Add a peephole2 that improves bit operations > with a lower register and a constant. >
