From c4d48f95f9e723f28d4c0f57f7a34b8f1ec98551 Mon Sep 17 00:00:00 2001
From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 19 Feb 2018 18:58:13 +0000
Subject: [PATCH] 	PR tree-optimization/84452 	* tree-vect-patterns.c
 (vect_recog_pow_pattern): Don't call 	expand_simd_clones if
 targetm.simd_clone.compute_vecsize_and_simdlen 	is NULL.

	* gcc.dg/pr84452.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@257819 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/ChangeLog                  |  7 +++++++
 gcc/testsuite/ChangeLog        |  3 +++
 gcc/testsuite/gcc.dg/pr84452.c | 14 ++++++++++++++
 gcc/tree-vect-patterns.c       |  3 ++-
 4 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.dg/pr84452.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 209ea145b17..13ce8f2001c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2018-02-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/84452
+	* tree-vect-patterns.c (vect_recog_pow_pattern): Don't call
+	expand_simd_clones if targetm.simd_clone.compute_vecsize_and_simdlen
+	is NULL.
+
 2018-02-19  Martin Liska  <mliska@suse.cz>
 
 	PR sanitizer/82183
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b84c10f0b1b..5975b23bb88 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2018-02-19  Jakub Jelinek  <jakub@redhat.com>
 
+	PR tree-optimization/84452
+	* gcc.dg/pr84452.c: New test.
+
 	PR c++/79064
 	* g++.dg/template/overload15.C (f): Use 0u - 1ll instead of 0u - 1l.
 
diff --git a/gcc/testsuite/gcc.dg/pr84452.c b/gcc/testsuite/gcc.dg/pr84452.c
new file mode 100644
index 00000000000..6e961cb04e8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr84452.c
@@ -0,0 +1,14 @@
+/* PR tree-optimization/84452 */
+/* { dg-do compile } */
+/* { dg-options "-Ofast" } */
+
+double pow (double, double) __attribute__((simd));
+double exp (double) __attribute__((simd));
+extern double a[1024], b[1024];
+
+void
+foo (void)
+{
+  for (int i = 0; i < 1024; ++i)
+    a[i] = pow (2.0, b[i]);
+}
diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c
index 25a2efb21f8..34f69e9843d 100644
--- a/gcc/tree-vect-patterns.c
+++ b/gcc/tree-vect-patterns.c
@@ -1113,7 +1113,8 @@ vect_recog_pow_pattern (vec<gimple *> *stmts, tree *type_in,
 	      cgraph_node *node = cgraph_node::get_create (exp_decl);
 	      if (node->simd_clones == NULL)
 		{
-		  if (node->definition)
+		  if (targetm.simd_clone.compute_vecsize_and_simdlen == NULL
+		      || node->definition)
 		    return NULL;
 		  expand_simd_clones (node);
 		  if (node->simd_clones == NULL)
-- 
2.11.4.GIT