From 8a9fdb1e85e646e2fb1a32281434391c4b7aba6e Mon Sep 17 00:00:00 2001
From: amker <amker@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 17 May 2018 11:25:43 +0000
Subject: [PATCH] 	PR tree-optimization/85793 	* tree-vect-stmts.c
 (vectorizable_load): Handle 1 element-wise load 	for VMAT_ELEMENTWISE.

	gcc/testsuite
	* gcc.dg/vect/pr85793.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@260317 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog                       |  7 +++++++
 gcc/testsuite/ChangeLog             |  5 +++++
 gcc/testsuite/gcc.dg/vect/pr85793.c | 12 ++++++++++++
 gcc/tree-vect-stmts.c               |  4 ++++
 4 files changed, 28 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/vect/pr85793.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9e22926fba7..b80d6be1357 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-05-17  Bin Cheng  <bin.cheng@arm.com>
+	    Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/85793
+	* tree-vect-stmts.c (vectorizable_load): Handle 1 element-wise load
+	for VMAT_ELEMENTWISE.
+
 2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* internal-fn.h (lookup_internal_fn): Declare
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c20e717ed97..69a899840dd 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-05-17  Bin Cheng  <bin.cheng@arm.com>
+
+	PR tree-optimization/85793
+	* gcc.dg/vect/pr85793.c: New test.
+
 2018-05-17  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* gcc.dg/gimplefe-28.c: New test.
diff --git a/gcc/testsuite/gcc.dg/vect/pr85793.c b/gcc/testsuite/gcc.dg/vect/pr85793.c
new file mode 100644
index 00000000000..9b5d5182002
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/pr85793.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target vect_perm } */
+
+int a, c, d;
+long b[6];
+void fn1() {
+  for (; a < 2; a++) {
+    c = 0;
+    for (; c <= 5; c++)
+      d &= b[a * 3];
+  }
+}
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c
index a90c9349735..4539f6a160e 100644
--- a/gcc/tree-vect-stmts.c
+++ b/gcc/tree-vect-stmts.c
@@ -7801,6 +7801,10 @@ vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt,
 	    }
 	  ltype = build_aligned_type (ltype, TYPE_ALIGN (TREE_TYPE (vectype)));
 	}
+      /* Load vector(1) scalar_type if it's 1 element-wise vectype.  */
+      else if (nloads == 1)
+	ltype = vectype;
+
       if (slp)
 	{
 	  /* For SLP permutation support we need to load the whole group,
-- 
2.11.4.GIT