> The cprop_hardreg pass does not consider REG_DEAD notes when > propagating, and this causes issues if target specific code uses > dead_or_set_regno_p to know if it can clobber registers.
As explained in the audit trail, it doesn't have to. > Killing regs that are marked REG_DEAD fixes the immediate problem. > Is that the right approach? What do you guys think? Nope, consumers of REG_DEAD notes must instead explicitly ask the DF framework to recompute them. -- Eric Botcazou
