Fixed bug related to FABS/FNEG inst in X86, updated Function PrologueEpilogue
Fixed bug related to FABS/FNEG inst in X86, updated Function PrologueEpilogue

rakib-hasan/math-atlas,rakib-hasan/math-atlas,rakib-hasan/math-atlas,rakib-hasan/math-atlas,rakib-hasan/math-atlas,rakib-hasan/math-atlas