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(init_expr_once): Set direct_load and direct_store if SOME hard register can be loaded or stored... 

(init_expr_once): Set direct_load and direct_store if SOME hard
register can be loaded or stored; not just if the first one we pick
can be.

From-SVN: r1910
This commit is contained in:
Richard Kenner 1992-08-20 08:36:23 -04:00
parent 1b238f1c06
commit e6fe56a424
1 changed files with 18 additions and 13 deletions
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31
gcc/expr.c
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@ -155,23 +155,28 @@ init_expr_once ()
direct_load[(int) mode] = direct_store[(int) mode] = 0;
PUT_MODE (mem, mode);
/* Find a register that can be used in this mode, if any. */
for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
if (HARD_REGNO_MODE_OK (regno, mode))
break;
/* See if there is some register that can be used in this mode and
directly loaded or stored from memory. */
if (regno == FIRST_PSEUDO_REGISTER)
continue;
for (regno = 0; regno < FIRST_PSEUDO_REGISTER
&& (direct_load[(int) mode] == 0 || direct_store[(int) mode] == 0);
regno++)
{
if (! HARD_REGNO_MODE_OK (regno, mode))
continue;
reg = gen_rtx (REG, mode, regno);
reg = gen_rtx (REG, mode, regno);
SET_SRC (pat) = mem;
SET_DEST (pat) = reg;
direct_load[(int) mode] = (recog (pat, insn, &num_clobbers)) >= 0;
SET_SRC (pat) = mem;
SET_DEST (pat) = reg;
if (recog (pat, insn, &num_clobbers) >= 0)
direct_load[(int) mode] = 1;
SET_SRC (pat) = reg;
SET_DEST (pat) = mem;
direct_store[(int) mode] = (recog (pat, insn, &num_clobbers)) >= 0;
SET_SRC (pat) = reg;
SET_DEST (pat) = mem;
if (recog (pat, insn, &num_clobbers) >= 0)
direct_store[(int) mode] = 1;
}
movstr_optab[(int) mode] = CODE_FOR_nothing;
}