From b4f4ed378b2343b0af8b1235838feef4f6c8c51c Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Fri, 30 Jul 2021 14:21:08 +0200
Subject: [PATCH] Disable gfortran tree vectorizer to avoid gcc11+
 miscompilation at O3

---
 test/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d338242ff..e4ee8b28b 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -2,6 +2,10 @@ include_directories(${PROJECT_SOURCE_DIR})
 include_directories(${PROJECT_BINARY_DIR})
 
 enable_language(Fortran)
+if (CMAKE_Fortran_COMPILER_ID STREQUAL GNU)
+        set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fno-tree-vectorize")
+endif()
+
 
 if (BUILD_SINGLE)
 	list( APPEND OpenBLAS_Tests sblat1 sblat2 sblat3)