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genrecog.c (DT_veclen_ge): New.

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* genrecog.c (DT_veclen_ge): New.
        (add_to_sequence) [MATCH_PARALLEL]: Generate one.
        (maybe_both_true_2): Simplify DT_veclen vs DT_veclen_ge.
        (nodes_identical_1): Handle DT_veclen_ge.
        (write_cond, debug_decision_2): Likewise.

From-SVN: r39016
This commit is contained in:
Richard Henderson 2001-01-14 12:35:06 -08:00 committed by Richard Henderson
parent d6c5a76351
commit 521b92248e
2 changed files with 33 additions and 2 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
2001-01-14 Richard Henderson <rth@redhat.com>
* genrecog.c (DT_veclen_ge): New.
(add_to_sequence) [MATCH_PARALLEL]: Generate one.
(maybe_both_true_2): Simplify DT_veclen vs DT_veclen_ge.
(nodes_identical_1): Handle DT_veclen_ge.
(write_cond, debug_decision_2): Likewise.
2001-01-14 Richard Earnshaw <rearnsha@arm.com>
* arm.md (ldmsi_postinc, ldmsi, stmsi_postinc, smsi): Delete. Replace

27
gcc/genrecog.c
View File

@ -87,7 +87,7 @@ struct decision_test
enum decision_type {
DT_mode, DT_code, DT_veclen,
DT_elt_zero_int, DT_elt_one_int, DT_elt_zero_wide,
DT_dup, DT_pred, DT_c_test,
DT_veclen_ge, DT_dup, DT_pred, DT_c_test,
DT_accept_op, DT_accept_insn
} type;
@ -802,10 +802,19 @@ add_to_sequence (pattern, last, position, insn_type, top)
/* Else nothing special. */
break;
case MATCH_PARALLEL:
/* The explicit patterns within a match_parallel enforce a minimum
length on the vector. The match_parallel predicate may allow
for more elements. We do need to check for this minimum here
or the code generated to match the internals may reference data
beyond the end of the vector. */
test = new_decision_test (DT_veclen_ge, &place);
test->u.veclen = XVECLEN (pattern, 2);
/* FALLTHRU */
case MATCH_OPERAND:
case MATCH_SCRATCH:
case MATCH_OPERATOR:
case MATCH_PARALLEL:
case MATCH_INSN:
{
const char *pred_name;
@ -1122,6 +1131,12 @@ maybe_both_true_2 (d1, d2)
}
}
/* Tests vs veclen may be known when strict equality is involved. */
if (d1->type == DT_veclen && d2->type == DT_veclen_ge)
return d1->u.veclen >= d2->u.veclen;
if (d1->type == DT_veclen_ge && d2->type == DT_veclen)
return d2->u.veclen >= d1->u.veclen;
return -1;
}
@ -1252,6 +1267,7 @@ nodes_identical_1 (d1, d2)
return strcmp (d1->u.c_test, d2->u.c_test) == 0;
case DT_veclen:
case DT_veclen_ge:
return d1->u.veclen == d2->u.veclen;
case DT_dup:
@ -1952,6 +1968,10 @@ write_cond (p, depth, subroutine_type)
printf (HOST_WIDE_INT_PRINT_DEC, p->u.intval);
break;
case DT_veclen_ge:
printf ("XVECLEN (x%d, 0) >= %d", depth, p->u.veclen);
break;
case DT_dup:
printf ("rtx_equal_p (x%d, operands[%d])", depth, p->u.dup);
break;
@ -2715,6 +2735,9 @@ debug_decision_2 (test)
fprintf (stderr, "elt0_w=");
fprintf (stderr, HOST_WIDE_INT_PRINT_DEC, test->u.intval);
break;
case DT_veclen_ge:
fprintf (stderr, "veclen>=%d", test->u.veclen);
break;
case DT_dup:
fprintf (stderr, "dup=%d", test->u.dup);
break;