+2009-09-03 Vladimir Makarov <vmakarov@redhat.com>
+
+ PR bootstrap/41241
+ * ira.c (update_equiv_reg): Remove check on class likely spill.
+
2009-09-03 Jakub Jelinek <jakub@redhat.com>
PR debug/41236
/* We only handle the case of a pseudo register being set
once, or always to the same value. */
- /* ??? The mn10200 port breaks if we add equivalences for
- values that need an ADDRESS_REGS register and set them equivalent
- to a MEM of a pseudo. The actual problem is in the over-conservative
- handling of INPADDR_ADDRESS / INPUT_ADDRESS / INPUT triples in
- calculate_needs, but we traditionally work around this problem
- here by rejecting equivalences when the destination is in a register
- that's likely spilled. This is fragile, of course, since the
- preferred class of a pseudo depends on all instructions that set
- or use it. */
-
if (!REG_P (dest)
|| (regno = REGNO (dest)) < FIRST_PSEUDO_REGISTER
- || reg_equiv[regno].init_insns == const0_rtx
- || (CLASS_LIKELY_SPILLED_P (reg_preferred_class (regno))
- && MEM_P (src) && ! reg_equiv[regno].is_arg_equivalence))
+ || reg_equiv[regno].init_insns == const0_rtx)
{
/* This might be setting a SUBREG of a pseudo, a pseudo that is
also set somewhere else to a constant. */