backport: re PR testsuite/65484 (FAIL: g++.dg/vect/pr36648.cc on powerpc64)

2017-02-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	Backport from mainline
	2017-01-27  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR target/65484
	* g++.dg/vect/pr36648.cc: Modify to reflect that the loop is not
	vectorized on POWER unless hardware misaligned loads are
	available.

From-SVN: r245164

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 99dd282d6c6345188efa9b809f8da731be7c0203..c48f28269d02c71264e538d486395bbc675ef5c2 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,13 @@
+2017-02-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+       Backport from mainline
+       2017-01-27  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+       PR target/65484
+       * g++.dg/vect/pr36648.cc: Modify to reflect that the loop is not
+       vectorized on POWER unless hardware misaligned loads are
+       available.
+
 2017-01-26  Richard Biener  <rguenther@suse.de>
 
        Backport from mainline

diff --git a/gcc/testsuite/g++.dg/vect/pr36648.cc b/gcc/testsuite/g++.dg/vect/pr36648.cc
index 6306b4d65404bc881bdb9aa4a43071e08d9ee5ed..6bd26b274870ac6190e5c283e03e0944645a6132 100644 (file)
--- a/gcc/testsuite/g++.dg/vect/pr36648.cc
+++ b/gcc/testsuite/g++.dg/vect/pr36648.cc
@@ -17,8 +17,13 @@ Foo foo;
 
 int main() { }
 
-/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { !  vect_no_align } } } } */
-/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { ! vect_no_align } } } } */
+/* On older powerpc hardware (POWER7 and earlier), the default flag
+   -mno-allow-movmisalign prevents vectorization.  On POWER8 and later,
+   when vect_hw_misalign is true, vectorization occurs.  For other
+   targets, ! vect_no_align is a sufficient test.  */
+ 
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { { { !  vect_no_align } && { ! powerpc*-*-* } } || { powerpc*-*-* && vect_hw_misalign } } } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target { { { ! vect_no_align } && { ! powerpc*-*-* } } || { powerpc*-*-* && vect_hw_misalign } } } } } */
 /* { dg-final { cleanup-tree-dump "vect" } } */