===================================================================
@@ -4201,6 +4201,15 @@ need_for_split_p (HARD_REG_SET potential
&& (regno >= FIRST_PSEUDO_REGISTER
|| ! TEST_HARD_REG_BIT (eliminable_regset, hard_regno))
&& ! TEST_HARD_REG_BIT (lra_no_alloc_regs, hard_regno)
+ /* Don't split call clobbered hard regs living through
+ calls, otherwise we might have a check problem in the
+ assign sub-pass as in the most cases (exception is a
+ situation when lra_risky_transformations_p value is
+ true) the assign pass assumes that all pseudos living
+ through calls are assigned to call saved hard regs. */
+ && (regno >= FIRST_PSEUDO_REGISTER
+ || ! TEST_HARD_REG_BIT (call_used_reg_set, regno)
+ || usage_insns[regno].calls_num == calls_num)
/* We need at least 2 reloads to make pseudo splitting
profitable. We should provide hard regno splitting in
any case to solve 1st insn scheduling problem when
@@ -4799,7 +4808,7 @@ inherit_in_ebb (rtx head, rtx tail)
usage_insns invalidation. */
if ((dst_regno < FIRST_PSEUDO_REGISTER
|| reg_renumber[dst_regno] >= 0)
- && ! reg->subreg_p && reg->type != OP_IN)
+ && ! reg->subreg_p && reg->type != OP_IN)
{
HARD_REG_SET s;