> 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 t
Hi,
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.
For example, regcrop transforms
(insn 7 4 8 2 (set (reg:SI 16 r16 [orig:43 D.1617 ] [43])
(
