{ FS_OPT_MUX_ANDNOT_BOOL,"boolean simplification: Muxb(sel, false, x) = And(Not(sel), x)" },
{ FS_OPT_MUX_C, "algebraic simplification: Mux(C, f, t) = C ? t : f" },
{ FS_OPT_MUX_EQ, "algebraic simplification: Mux(v, x, x) = x" },
{ FS_OPT_MUX_ANDNOT_BOOL,"boolean simplification: Muxb(sel, false, x) = And(Not(sel), x)" },
{ FS_OPT_MUX_C, "algebraic simplification: Mux(C, f, t) = C ? t : f" },
{ FS_OPT_MUX_EQ, "algebraic simplification: Mux(v, x, x) = x" },
- { FS_OPT_MUX_TRANSFORM, "algebraic simplification: Mux(a, b, c) = b OR Mux(a,b, c) = c" },
+ { FS_OPT_MUX_TRANSFORM, "algebraic simplification: Mux(t ==/!= f, t, f) = f/t, Mux(t ==/!= 0, -t, t) = -t/t" },
{ FS_OPT_MUX_TO_MIN, "algebraic simplification: Mux(a < b, a, b) = Min(a,b)" },
{ FS_OPT_MUX_TO_MAX, "algebraic simplification: Mux(a > b, a, b) = Max(a,b)" },
{ FS_OPT_MUX_TO_MIN, "algebraic simplification: Mux(a < b, a, b) = Min(a,b)" },
{ FS_OPT_MUX_TO_MAX, "algebraic simplification: Mux(a > b, a, b) = Max(a,b)" },
- { FS_OPT_MUX_TO_ABS, "algebraic simplification: Mux(a > b, a, b) = Abs(a,b)" },
- { FS_OPT_MUX_TO_SHR, "algebraic simplification: Mux(a > b, a, b) = a >> b" },
+ { FS_OPT_MUX_TO_ABS, "algebraic simplification: Mux(a > 0, a, -a) = Abs(a)" },
{ FS_OPT_IDEM_UNARY, "algebraic simplification: Idempotent unary operation" },
{ FS_OPT_MINUS_NOT, "algebraic simplification: -(~x) = x + 1" },
{ FS_OPT_NOT_MINUS_1, "algebraic simplification: ~(x - 1) = -x" },
{ FS_OPT_IDEM_UNARY, "algebraic simplification: Idempotent unary operation" },
{ FS_OPT_MINUS_NOT, "algebraic simplification: -(~x) = x + 1" },
{ FS_OPT_NOT_MINUS_1, "algebraic simplification: ~(x - 1) = -x" },