Enable split scalar pass.

Author: pratikashar

visa/include/VISAOptions.def

@@ -136,7 +136,7 @@ DEF_VISA_OPTION(vISA_AbortOnSpillThreshold, ET_INT32, NULLSTR, UNUSED, 0)
 DEF_VISA_OPTION(vISA_enableBCR, ET_BOOL, "-enableBCR",   UNUSED, false)
 DEF_VISA_OPTION(vISA_IntrinsicSplit,       ET_BOOL, "-doSplit", UNUSED, false)
 DEF_VISA_OPTION(vISA_LraFFWindowSize,       ET_INT32, "-lraFFWindowSize", UNUSED, 12)
-DEF_VISA_OPTION(vISA_SplitGRFAlignedScalar, ET_BOOL, "-splitGRFalignedscalar", UNUSED, false)
+DEF_VISA_OPTION(vISA_SplitGRFAlignedScalar, ET_BOOL, "-nosplitGRFalignedscalar", UNUSED, true)
 
 DEF_VISA_OPTION(vISA_VerifyAugmentation,    ET_BOOL, "-verifyaugmentation", UNUSED, false)
 DEF_VISA_OPTION(vISA_VerifyExplicitSplit,   ET_BOOL, "-verifysplit", UNUSED, false)