ALTINSTR_REPLACEMENT
ALTINSTR_REPLACEMENT(newinstr, feature, 1) \
ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \
ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \
ALTINSTR_REPLACEMENT(altinstr, 1) \
ALTINSTR_REPLACEMENT(altinstr1, 1) \
ALTINSTR_REPLACEMENT(altinstr2, 2) \
ALTINSTR_REPLACEMENT(newinstr)