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(expand_increment): Handle both BAD_SUBREG and POST.

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From-SVN: r6567
This commit is contained in:
Richard Kenner 1994-02-15 19:30:29 -05:00
parent a37adfc784
commit 79777b798c
1 changed files with 9 additions and 1 deletions
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10
gcc/expr.c
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@ -7951,7 +7951,15 @@ expand_increment (exp, post)
SUBREG_REG (op0) = copy_to_reg (SUBREG_REG (op0));
else if (GET_CODE (op0) == SUBREG
&& GET_MODE_BITSIZE (GET_MODE (op0)) < BITS_PER_WORD)
bad_subreg = 1;
{
/* We cannot increment this SUBREG in place. If we are
post-incrementing, get a copy of the old value. Otherwise,
just mark that we cannot increment in place. */
if (post)
op0 = copy_to_reg (op0);
else
bad_subreg = 1;
}
op0_is_copy = ((GET_CODE (op0) == SUBREG || GET_CODE (op0) == REG)
&& temp != get_last_insn ());