From a9a6710e151ccd5d4fa9a6178db4413ed0c74911 Mon Sep 17 00:00:00 2001
From: Konstantinos Margaritis <markos@freevec.org>
Date: Mon, 21 Mar 2016 13:46:47 -0400
Subject: [PATCH] add initial s390x(zEC13) ZVECTOR support

---
 CMakeLists.txt           |  6 +++++-
 cmake/EigenTesting.cmake | 10 +++++++++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 95f4c8d7c..51beba118 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -250,7 +250,11 @@ if(NOT MSVC)
     message(STATUS "Enabling NEON in tests/examples")
   endif()
 
-
+  option(EIGEN_TEST_ZVECTOR "Enable/Disable S390X(zEC13) ZVECTOR in tests/examples" OFF)
+  if(EIGEN_TEST_ZVECTOR)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=z13 -mzvector")
+    message(STATUS "Enabling S390X(zEC13) ZVECTOR in tests/examples")
+  endif()
 
   check_cxx_compiler_flag("-fopenmp" COMPILER_SUPPORT_OPENMP)
   if(COMPILER_SUPPORT_OPENMP)
diff --git a/cmake/EigenTesting.cmake b/cmake/EigenTesting.cmake
index c70ec2c24..1709e0334 100644
--- a/cmake/EigenTesting.cmake
+++ b/cmake/EigenTesting.cmake
@@ -302,7 +302,13 @@ macro(ei_testing_print_summary)
     else()
       message(STATUS "ARMv8 NEON:        Using architecture defaults")
     endif()
-    
+ 
+    if(EIGEN_TEST_ZVECTOR)
+      message(STATUS "S390X ZVECTOR:     ON")
+    else()
+      message(STATUS "S390X ZVECTOR:     Using architecture defaults")
+    endif()
+   
     if(EIGEN_TEST_CXX11)
       message(STATUS "C++11:             ON")
     else()
@@ -446,6 +452,8 @@ macro(ei_get_cxxflags VAR)
     set(${VAR} NEON)
   elseif(EIGEN_TEST_NEON64)
     set(${VAR} NEON)
+  elseif(EIGEN_TEST_ZVECTOR)
+    set(${VAR} ZVECTOR)
   elseif(EIGEN_TEST_VSX)
     set(${VAR} VSX)
   elseif(EIGEN_TEST_ALTIVEC)