From d29c7f605fc6b531eaf351bf5909e7c551fc6b9e Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Fri, 10 Jan 2020 14:56:31 +0000
Subject: [PATCH] Use get_related_vectype_for_scalar_type for reduction indices
The related_vector_mode series missed this case in
vect_create_epilog_for_reduction, where we want to create the
unsigned integer equivalent of another vector. Without it we
could mix SVE and Advanced SIMD vectors in the same operation.
This showed up on existing tests when testing with fixed-length
-msve-vector-bits=128.
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
gcc/
* tree-vect-loop.c (vect_create_epilog_for_reduction): Use
get_related_vectype_for_scalar_type rather than build_vector_type
to create the index type for a conditional reduction.
From-SVN: r280112
---
gcc/ChangeLog | 6 ++++++
gcc/tree-vect-loop.c | 5 +++--
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 28564f723e18..21dd1aa29c82 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
+
+ * tree-vect-loop.c (vect_create_epilog_for_reduction): Use
+ get_related_vectype_for_scalar_type rather than build_vector_type
+ to create the index type for a conditional reduction.
+
2020-01-10 Richard Sandiford <richard.sandiford@arm.com>
* tree-vect-loop.c (update_epilogue_loop_vinfo): Update DR_REF
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 1fa3ba6d932e..faf816116de2 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -4566,8 +4566,9 @@ vect_create_epilog_for_reduction (stmt_vec_info stmt_info,
int scalar_precision
= GET_MODE_PRECISION (SCALAR_TYPE_MODE (TREE_TYPE (vectype)));
tree cr_index_scalar_type = make_unsigned_type (scalar_precision);
- tree cr_index_vector_type = build_vector_type
- (cr_index_scalar_type, TYPE_VECTOR_SUBPARTS (vectype));
+ tree cr_index_vector_type = get_related_vectype_for_scalar_type
+ (TYPE_MODE (vectype), cr_index_scalar_type,
+ TYPE_VECTOR_SUBPARTS (vectype));
/* First we create a simple vector induction variable which starts
with the values {1,2,3,...} (SERIES_VECT) and increments by the
--
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