Only optimize (a - (-b)) into (a + b) when the unary operand is a negation. This fixes (a - (!b)) being turned into (a + b).
Only optimize (a - (-b)) into (a + b) when the unary operand is a negation. This fixes (a - (!b)) being turned into (a + b).

111WARLOCK111/gmqcc,ignatenkobrain/gmqcc,ignatenkobrain/gmqcc,111WARLOCK111/gmqcc