{ FS_OPT_ADD_SUB, "algebraic simplification: (a + x) - x = (a - x) + x = a" },
{ FS_OPT_ADD_MUL_A_X_A, "algebraic simplification: a * x + a = a * (x + 1)" },
{ FS_OPT_SUB_0_A, "algebraic simplification: 0 - a = -a" },
+ { FS_OPT_MINUS_SUB, "algebraic simplification: -(a - b) = b - a" },
+ { FS_OPT_SUB_MINUS, "algebraic simplification: a - (-b) = a + b" },
{ FS_OPT_SUB_MUL_A_X_A, "algebraic simplification: a * x - a = a * (x - 1)" },
{ FS_OPT_SUB_SUB_X_Y_Z, "algebraic simplification: (x - y) - z = x - (y + z)" },
+ { FS_OPT_SUB_C_NOT_X, "algebraic simplification: c - ~a = a + (c+1)" },
+ { FS_OPT_SUB_TO_ADD, "algebraic simplification: (-a) - b = -(a + b), a - (b - c) = a + (c - b), a - (b * C) -> a + (b * -C)" },
+ { FS_OPT_MUL_MINUS, "algebraic simplification: (-a) * (b - c) -> a * (c - b)" },
{ FS_OPT_MUL_MINUS_1, "algebraic simplification: a * -1 = -a" },
+ { FS_OPT_MINUS_MUL_C, "algebraic simplification: (-a) * C = a * (-C)" },
+ { FS_OPT_MUL_MINUS_MINUS,"algebraic simplification: (-a) * (-b) = a * b" },
{ FS_OPT_OR, "algebraic simplification: a | a = a | 0 = 0 | a = a" },
- { FS_OPT_AND, "algebraic simplification: a & 0b1...1 = 0b1...1 & a = a & a = a" },
+ { FS_OPT_AND, "algebraic simplification: a & 0b1...1 = 0b1...1 & a = a & a = (a|X) & a = a" },
+ { FS_OPT_TO_EOR, "algebraic simplification: (a|b) & ~(a&b) = a^b" },
{ FS_OPT_EOR_A_A, "algebraic simplification: a ^ a = 0" },
{ FS_OPT_EOR_TO_NOT_BOOL,"algebraic simplification: bool ^ 1 = !bool" },
- { FS_OPT_EOR_TO_NOT, "algebraic simplification: x ^ 0b1..1 = ~x" },
+ { FS_OPT_EOR_TO_NOT, "algebraic simplification: x ^ 0b1..1 = ~x, (a ^ b) & b -> ~a & b" },
{ FS_OPT_NOT_CMP, "algebraic simplification: !(a cmp b) = a !cmp b" },
{ FS_OPT_OR_SHFT_TO_ROT, "algebraic simplification: (x << c) | (x >> (bits - c)) == Rot(x, c)" },
{ FS_OPT_REASSOC_SHIFT, "algebraic simplification: (x SHF c1) SHF c2 = x SHF (c1+c2)" },
+ { FS_OPT_SHIFT_AND, "algebraic simplification: (a SHF c) AND (b SHF c) = (a AND b) SHF c" },
+ { FS_OPT_SHIFT_OR, "algebraic simplification: (a SHF c) OR (b SHF c) = (a OR b) SHF c" },
+ { FS_OPT_SHIFT_EOR, "algebraic simplification: (a SHF c) XOR (b SHF c) = (a XOR b) SHF c" },
{ FS_OPT_CONV, "algebraic simplification: Conv could be removed" },
{ FS_OPT_CAST, "algebraic simplification: a Cast could be removed" },
{ FS_OPT_MIN_MAX_EQ, "algebraic simplification: Min(a,a) = Max(a,a) = a" },
{ 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_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_NOT_PLUS_1, "algebraic simplification: ~x + 1 = -x" },
+ { FS_OPT_ADD_X_NOT_X, "algebraic simplification: ~x + x = -1" },
+ { FS_OPT_FP_INV_MUL, "algebraic simplification: x / y = x * (1.0/y)" },
{ FS_OPT_CONST_PHI, "constant evaluation on Phi node" },
+ { FS_OPT_PREDICATE, "predicate optimization" },
+ { FS_OPT_DEMORGAN, "optimization using DeMorgan's law" },
{ FS_BE_IA32_LEA, "ia32 Backend transformation: Lea was created" },
{ FS_BE_IA32_LOAD_LEA, "ia32 Backend transformation: Load merged with a Lea" },
{ FS_BE_IA32_STORE_LEA, "ia32 Backend transformation: Store merged with a Lea" },