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(insert): Don't put a REG into qty_const.

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From-SVN: r10607
This commit is contained in:
Richard Kenner 1995-11-26 14:47:28 -05:00
parent de3cb7c346
commit f353588ada
1 changed files with 5 additions and 3 deletions
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8
gcc/cse.c
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@ -1371,20 +1371,22 @@ insert (x, classp, hash, mode)
update `qty_const_insn' to show that `this_insn' is the latest
insn making that quantity equivalent to the constant. */
if (elt->is_const && classp && GET_CODE (classp->exp) == REG)
if (elt->is_const && classp && GET_CODE (classp->exp) == REG
&& GET_CODE (x) != REG)
{
qty_const[reg_qty[REGNO (classp->exp)]]
= gen_lowpart_if_possible (qty_mode[reg_qty[REGNO (classp->exp)]], x);
qty_const_insn[reg_qty[REGNO (classp->exp)]] = this_insn;
}
else if (GET_CODE (x) == REG && classp && ! qty_const[reg_qty[REGNO (x)]])
else if (GET_CODE (x) == REG && classp && ! qty_const[reg_qty[REGNO (x)]]
&& ! elt->is_const)
{
register struct table_elt *p;
for (p = classp; p != 0; p = p->next_same_value)
{
if (p->is_const)
if (p->is_const && GET_CODE (p->exp) != REG)
{
qty_const[reg_qty[REGNO (x)]]
= gen_lowpart_if_possible (GET_MODE (x), p->exp);