improved MSVC support in cmake files (SSE)

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 840ba6f..215f65a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,7 +12,7 @@
   set(EIGEN_VERSION "${EIGEN_VERSION_NUMBER}")
 endif(EIGEN_SVN_REVISION)
 
-cmake_minimum_required(VERSION 2.4)
+cmake_minimum_required(VERSION 2.6)
 
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
@@ -35,25 +35,44 @@
     if(NOT EIGEN_TEST_LIB)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic")
     endif(NOT EIGEN_TEST_LIB)
+
+    option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF)
     if(EIGEN_TEST_SSE2)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2")
       message("Enabling SSE2 in tests/examples")
     endif(EIGEN_TEST_SSE2)
+
+    option(EIGEN_TEST_SSE3 "Enable/Disable SSE3 in tests/examples" OFF)
     if(EIGEN_TEST_SSE3)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse3")
       message("Enabling SSE3 in tests/examples")
     endif(EIGEN_TEST_SSE3)
+
+    option(EIGEN_TEST_SSSE3 "Enable/Disable SSSE3 in tests/examples" OFF)
     if(EIGEN_TEST_SSSE3)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mssse3")
       message("Enabling SSSE3 in tests/examples")
     endif(EIGEN_TEST_SSSE3)
+
+    option(EIGEN_TEST_ALTIVEC "Enable/Disable altivec in tests/examples" OFF)
     if(EIGEN_TEST_ALTIVEC)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec -mabi=altivec")
       message("Enabling AltiVec in tests/examples")
     endif(EIGEN_TEST_ALTIVEC)
+
   endif(CMAKE_SYSTEM_NAME MATCHES Linux)
 endif(CMAKE_COMPILER_IS_GNUCXX)
 
+if(MSVC)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ")
+
+  option(EIGEN_TEST_SSE2 "Enable/Disable SSE2 in tests/examples" OFF)
+  if(EIGEN_TEST_SSE2)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
+    message("Enabling SSE2 in tests/examples")
+  endif(EIGEN_TEST_SSE2)
+endif(MSVC)
+
 include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 
 add_subdirectory(Eigen)

bench/btl/CMakeLists.txt

diff --git a/bench/btl/CMakeLists.txt b/bench/btl/CMakeLists.txt
index 8fb0ff8..b6afc86 100644
--- a/bench/btl/CMakeLists.txt
+++ b/bench/btl/CMakeLists.txt
@@ -21,6 +21,16 @@
   ENDIF(NOT BTL_NOVEC)
 ENDIF(CMAKE_COMPILER_IS_GNUCXX OR IS_ICPC)
 
+IF(MSVC)
+  SET(CMAKE_CXX_FLAGS " /O2 /Ot /GL /fp:fast -DNDEBUG")
+#   SET(CMAKE_Fortran_FLAGS "-g0 -O3 -DNDEBUG")
+  IF(NOT BTL_NOVEC)
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
+  ELSE(NOT BTL_NOVEC)
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DEIGEN_DONT_VECTORIZE")
+  ENDIF(NOT BTL_NOVEC)
+ENDIF(MSVC)
+
 if(IS_ICPC)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fast")
   set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fast")

test/main.h

diff --git a/test/main.h b/test/main.h
index 0476df3..433c868 100644
--- a/test/main.h
+++ b/test/main.h
@@ -47,8 +47,6 @@
 #define EI_PP_CAT2(a,b) a ## b
 #define EI_PP_CAT(a,b) EI_PP_CAT2(a,b)
 
-//#define EIGEN_NO_EXCEPTIONS // disabling throwing assertions on bad alloc -- somehow makes the tests crawl
-
 #ifndef EIGEN_NO_ASSERTION_CHECKING
 
   namespace Eigen