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VS2012 and VS2013 turn on optimizations by default that generate the use of CMOV instruction. This is a change from previous version VS2008. This means when you build with VS2012 or VS2013, it will generate UD exceptions on Quark. To resolve it, add /arch:IA32 options to not use enhanced instructions. https://msdn.microsoft.com/en-us/library/7t5yh4fd(v=vs.140).aspx Update the default options of VS2012 & VS2013 tool chain IA32 arch in BaseTools\Conf\tools_def.template to make sure the generated Quark compatibility driver. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Michael Kinney <michael.d.kinney@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18230 6f19259b-4bc3-4df7-8a09-765794883524