From: rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 25 Oct 2019 09:16:59 +0000 (+0000)
Subject: Fix failure in gcc.target/sve/reduc_strict_3.c
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09a61eea0b91b4ccd0b40612f4ef3e86409a464f;p=thirdparty%2Fgcc.git

Fix failure in gcc.target/sve/reduc_strict_3.c

Unwanted unrolling meant that we had more single-precision FADDAs
than expected.

2019-10-25  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	* gcc.target/aarch64/sve/reduc_strict_3.c (double_reduc1): Prevent
	the loop from being unrolled.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@277442 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index dfb2186d8edf..9397ff3a98b7 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-10-25  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* gcc.target/aarch64/sve/reduc_strict_3.c (double_reduc1): Prevent
+	the loop from being unrolled.
+
 2019-10-25  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* gcc.target/aarch64/sve/loop_add_5.c: Remove XFAILs for tests
diff --git a/gcc/testsuite/gcc.target/aarch64/sve/reduc_strict_3.c b/gcc/testsuite/gcc.target/aarch64/sve/reduc_strict_3.c
index a718e9d2ebfa..a815c93bcebd 100644
--- a/gcc/testsuite/gcc.target/aarch64/sve/reduc_strict_3.c
+++ b/gcc/testsuite/gcc.target/aarch64/sve/reduc_strict_3.c
@@ -82,6 +82,7 @@ double_reduc1 (float (*restrict i)[16])
 {
   float l = 0;
 
+#pragma GCC unroll 0
   for (int a = 0; a < 8; a++)
     for (int b = 0; b < 8; b++)
       l += i[b][a];