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* [gcc r11-9458] tree-optimization/101615 - SLP permute opt with CTOR roots
@ 2022-01-13 10:54 Richard Biener
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From: Richard Biener @ 2022-01-13 10:54 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:7f49f50f756c06f4093358ff77c11152777fff1c
commit r11-9458-g7f49f50f756c06f4093358ff77c11152777fff1c
Author: Richard Biener <rguenther@suse.de>
Date: Wed Jul 28 15:12:00 2021 +0200
tree-optimization/101615 - SLP permute opt with CTOR roots
CTOR roots are not explicitely represented so we have to make sure
to materialize permutes on SLP graph entries to them.
2021-07-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/101615
PR tree-optimization/103995
* tree-vect-slp.c (vect_optimize_slp): Materialize permutes
at CTOR SLP graph entries.
* gcc.dg/vect/bb-slp-pr101615-2.c: New testcase.
Diff:
---
gcc/testsuite/gcc.dg/vect/bb-slp-pr101615-2.c | 23 +++++++++++++++++++++++
gcc/tree-vect-slp.c | 7 +++++++
2 files changed, 30 insertions(+)
diff --git a/gcc/testsuite/gcc.dg/vect/bb-slp-pr101615-2.c b/gcc/testsuite/gcc.dg/vect/bb-slp-pr101615-2.c
new file mode 100644
index 00000000000..ac89883de22
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/bb-slp-pr101615-2.c
@@ -0,0 +1,23 @@
+/* { dg-do run } */
+/* { dg-additional-options "-O3 -w -Wno-psabi" } */
+
+#include "tree-vect.h"
+
+int res[6] = { 5, 7, 11, 3, 3, 3 };
+int a[6] = {5, 5, 8};
+int c;
+
+int main()
+{
+ check_vect ();
+ for (int b = 0; b <= 4; b++)
+ for (; c <= 4; c++) {
+ a[0] |= 1;
+ for (int e = 0; e <= 4; e++)
+ a[e + 1] |= 3;
+ }
+ for (int d = 0; d < 6; d++)
+ if (a[d] != res[d])
+ __builtin_abort ();
+ return 0;
+}
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index 3d4e701c0d8..230ff4081a5 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -3165,6 +3165,13 @@ vect_optimize_slp (vec_info *vinfo)
n_perm[idx] = perms.length () - 1;
}
+ /* In addition to the above we have to mark outgoing permutes facing
+ non-reduction graph entries that are not represented as to be
+ materialized. */
+ for (slp_instance instance : vinfo->slp_instances)
+ if (SLP_INSTANCE_KIND (instance) == slp_inst_kind_ctor)
+ bitmap_set_bit (n_materialize, SLP_INSTANCE_TREE (instance)->vertex);
+
/* Propagate permutes along the graph and compute materialization points. */
bool changed;
unsigned iteration = 0;
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