OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Handle polynomial DR_INIT 

The idea with the main 107-patch poly_int series (latterly 109-patch)
was to change the mode sizes and vector element counts to poly_int and
then propagate those changes as far as they needed to go to fix build
failures from incompatible types.  This means that DR_INIT is now
constructed as a poly_int64:

  poly_int64 pbytepos;
  if (!multiple_p (pbitpos, BITS_PER_UNIT, &pbytepos))
    {
      if (dump_file && (dump_flags & TDF_DETAILS))
	fprintf (dump_file, "failed: bit offset alignment.\n");
      return false;
    }
  [...]
  init = ssize_int (pbytepos);

This patch adjusts other references to DR_INIT accordingly.  Unlike
the above, the adjustments weren't needed to avoid a build-time type
incompatibility, but they are needed to make the producer and consumers
of DR_INIT logically consistent.

2018-01-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-predcom.c (aff_combination_dr_offset): Use wi::to_poly_widest
	rather than wi::to_widest for DR_INITs.
	* tree-vect-data-refs.c (vect_find_same_alignment_drs): Use
	wi::to_poly_offset rather than wi::to_offset for DR_INIT.
	(vect_analyze_data_ref_accesses): Require both DR_INITs to be
	INTEGER_CSTs.
	(vect_analyze_group_access_1): Note that here.

From-SVN: r256587
This commit is contained in:
Richard Sandiford 2018-01-12 14:48:53 +00:00 committed by Richard Sandiford
parent cf736b092a
commit c0a465457b
3 changed files with 21 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2018-01-12 Richard Sandiford <richard.sandiford@linaro.org>
* tree-predcom.c (aff_combination_dr_offset): Use wi::to_poly_widest
rather than wi::to_widest for DR_INITs.
* tree-vect-data-refs.c (vect_find_same_alignment_drs): Use
wi::to_poly_offset rather than wi::to_offset for DR_INIT.
(vect_analyze_data_ref_accesses): Require both DR_INITs to be
INTEGER_CSTs.
(vect_analyze_group_access_1): Note that here.
2018-01-12 Richard Sandiford <richard.sandiford@linaro.org>
* tree-vectorizer.c (get_vec_alignment_for_array_type): Handle

2
gcc/tree-predcom.c
View File

@ -680,7 +680,7 @@ aff_combination_dr_offset (struct data_reference *dr, aff_tree *offset)
tree_to_aff_combination_expand (DR_OFFSET (dr), type, offset,
&name_expansions);
aff_combination_const (&delta, type, wi::to_widest (DR_INIT (dr)));
aff_combination_const (&delta, type, wi::to_poly_widest (DR_INIT (dr)));
aff_combination_add (offset, &delta);
}

14
gcc/tree-vect-data-refs.c
View File

@ -2227,9 +2227,9 @@ vect_find_same_alignment_drs (struct data_dependence_relation *ddr)
return;
/* Two references with distance zero have the same alignment. */
offset_int diff = (wi::to_offset (DR_INIT (dra))
- wi::to_offset (DR_INIT (drb)));
if (diff != 0)
poly_offset_int diff = (wi::to_poly_offset (DR_INIT (dra))
- wi::to_poly_offset (DR_INIT (drb)));
if (maybe_ne (diff, 0))
{
/* Get the wider of the two alignments. */
unsigned int align_a = (vect_calculate_target_alignment (dra)
@ -2239,7 +2239,7 @@ vect_find_same_alignment_drs (struct data_dependence_relation *ddr)
unsigned int max_align = MAX (align_a, align_b);
/* Require the gap to be a multiple of the larger vector alignment. */
if (!wi::multiple_of_p (diff, max_align, SIGNED))
if (!multiple_p (diff, max_align))
return;
}
@ -2475,6 +2475,7 @@ vect_analyze_group_access_1 (struct data_reference *dr)
gimple *prev = stmt;
HOST_WIDE_INT diff, gaps = 0;
/* By construction, all group members have INTEGER_CST DR_INITs. */
while (next)
{
/* Skip same data-refs. In case that two or more stmts share
@ -2864,6 +2865,11 @@ vect_analyze_data_ref_accesses (vec_info *vinfo)
TREE_TYPE (DR_REF (drb))))
break;
/* Check that the DR_INITs are compile-time constants. */
if (TREE_CODE (DR_INIT (dra)) != INTEGER_CST
|| TREE_CODE (DR_INIT (drb)) != INTEGER_CST)
break;
/* Sorting has ensured that DR_INIT (dra) <= DR_INIT (drb). */
HOST_WIDE_INT init_a = TREE_INT_CST_LOW (DR_INIT (dra));
HOST_WIDE_INT init_b = TREE_INT_CST_LOW (DR_INIT (drb));