[eigen] MSVC compiler switch /Ox versus /O2

[FMDSPAM <fmdspam@xxxxxxxxx>]

Hi Gael,

In regard of the MSVC compiler, you skip the newly used /O2 flag because
"eventually MSVC does not like my /O2 flags (incompatibility with other 
option set by default)".

MSVC is unable  to use /O2 in DEBUG-Mode.
The attached patch (must have a revision, but)  do the job for me, even 
with the more aggressive /Ox "complete Optimization".
See cdash http://my.cdash.org/buildSummary.php?buildid=9100

I am unable to inject my patch permanently into my instance of the cdash 
automate. Nearly every time my cdash files are reloaded from repository 
before compile and run the test. By this, all my tweaks are overridden 
and lost. Only by luck (and no changes in the revision number of the 
KDE-repository?) my tweaks go their way into the cdash table.

How that can be improved?
I do not fully image all the possibilities given with the cdash parameter.
Can the attached batch script be improved to achieve what I originally 
intended:
To inject compiler switches case by case into the cdash run:
E.g. something in the line of:
ctest -V -S 
testsuite.cmake,EIGEN_BUILD_STRING=Frank_test_realy_aggressive,ADD_CXX_FLAGS="/Ox, 
/fp:fast" ?

Cheers
Frank






Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt	(revision 919324)
+++ CMakeLists.txt	(working copy)
@@ -74,6 +74,8 @@
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
     message("Enabling SSE2 in tests/examples")
   endif(EIGEN_TEST_SSE2)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Ox")
+  set(CMAKE_BUILD_TYPE Release)
 endif(MSVC)
 
 option(EIGEN_TEST_NO_EXPLICIT_VECTORIZATION "Disable explicit vectorization in tests/examples" OFF)

@Echo on
call "c:\Program Files\Microsoft Visual Studio 9.0\VC\vcvarsall.bat"
REM get the last version of the script
svn cat svn://anonsvn.kde.org/home/kde/trunk/kdesupport/eigen2/test/testsuite.cmake > testsuite.cmake
set COMMON=ctest -V -S testsuite.cmake,EIGEN_BUILD_STRING=windows-vista-x86_64-MSVC-2008(9.0.30729.1),EIGEN_MODE=Experimental
%COMMON%,EIGEN_EXPLICIT_VECTORIZATION=SSE2
%COMMON%,EIGEN_EXPLICIT_VECTORIZATION=novec