From ad318e3f1d372c4e720979d1eb13bebb8fb852d8 Mon Sep 17 00:00:00 2001
From: Tamar Christina <tamar.christina@arm.com>
Date: Fri, 20 Nov 2020 13:32:32 +0000
Subject: [PATCH] SLP: Have vectorizable_slp_permutation set type on invariants
This modifies vectorizable_slp_permutation to update the type of the children
of a perm node before trying to permute them. This allows us to be able to
permute invariant nodes.
This will be covered by test from the SLP pattern matcher.
gcc/ChangeLog:
* tree-vect-slp.c (vectorizable_slp_permutation): Update types on nodes
when needed.
---
gcc/tree-vect-slp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c
index 37356850ca47..59a8630f74aa 100644
--- a/gcc/tree-vect-slp.c
+++ b/gcc/tree-vect-slp.c
@@ -5187,7 +5187,8 @@ vectorizable_slp_permutation (vec_info *vinfo, gimple_stmt_iterator *gsi,
slp_tree child;
unsigned i;
FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (node), i, child)
- if (!types_compatible_p (SLP_TREE_VECTYPE (child), vectype))
+ if (!vect_maybe_update_slp_op_vectype (child, vectype)
+ || !types_compatible_p (SLP_TREE_VECTYPE (child), vectype))
{
if (dump_enabled_p ())
dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
--
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