| 439 | } |
| 440 | |
| 441 | Constant *randomInt(Type *Ty) { |
| 442 | const auto Width = Ty->getIntegerBitWidth(); |
| 443 | auto &P = Pool.at(Width); |
| 444 | |
| 445 | if (P.size() > 0 && C.flip()) { |
| 446 | auto I = P.at(C.choose(P.size())); |
| 447 | switch (C.choose(3)) { |
| 448 | case 0: { |
| 449 | APInt Delta(Width, limit(C.choose(8) + 1, Width)); |
| 450 | I += C.flip() ? Delta : -Delta; |
| 451 | break; |
| 452 | } |
| 453 | case 1: |
| 454 | I ^= APInt(Width, limit(1 << C.choose(Width), Width)); |
| 455 | break; |
| 456 | case 2: |
| 457 | I = ~I; |
| 458 | break; |
| 459 | default: |
| 460 | assert(false); |
| 461 | } |
| 462 | return ConstantInt::get(Ty, I); |
| 463 | } else { |
| 464 | auto I = randomIntHelper(Width); |
| 465 | switch (C.choose(5)) { |
| 466 | case 0: |
| 467 | I = ~I; |
| 468 | break; |
| 469 | case 1: |
| 470 | I = I + 1; |
| 471 | break; |
| 472 | case 2: |
| 473 | I = I - 1; |
| 474 | break; |
| 475 | default: |
| 476 | break; |
| 477 | } |
| 478 | P.push_back(I); |
| 479 | return ConstantInt::get(Ty, I); |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | Value *getRandomVal(unsigned Upto, Type *Ty) { |
| 484 | const auto Width = Ty->getIntegerBitWidth(); |