| /* -*- mode: C; c-basic-offset: 3; -*- */ |
| |
| /* |
| This file is part of MemCheck, a heavyweight Valgrind tool for |
| detecting memory errors. |
| |
| Copyright (C) 2012-2015 Florian Krohm |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include <assert.h> |
| #include "vtest.h" |
| |
| |
| /* Check the result of a quarternary operation. */ |
| static void |
| check_result_for_qernary(const irop_t *op, const test_data_t *data) |
| { |
| const opnd_t *result = &data->result; |
| const opnd_t *opnd1 = &data->opnds[0]; |
| const opnd_t *opnd2 = &data->opnds[1]; |
| const opnd_t *opnd3 = &data->opnds[2]; |
| const opnd_t *opnd4 = &data->opnds[3]; |
| vbits_t expected_vbits; |
| |
| /* Only handle those undef-kinds that actually occur. */ |
| switch (op->undef_kind) { |
| case UNDEF_ALL: |
| expected_vbits = undefined_vbits(result->vbits.num_bits); |
| break; |
| |
| case UNDEF_SAME: |
| // SAME with respect to the 1-bits in all operands |
| expected_vbits = or_vbits(or_vbits(or_vbits(opnd1->vbits, opnd2->vbits), |
| opnd3->vbits), opnd4->vbits); |
| break; |
| |
| default: |
| panic(__func__); |
| } |
| |
| if (! equal_vbits(result->vbits, expected_vbits)) |
| complain(op, data, expected_vbits); |
| } |
| |
| |
| int |
| test_qernary_op(const irop_t *op, test_data_t *data) |
| { |
| unsigned num_input_bits, i, bitpos; |
| opnd_t *opnds = data->opnds; |
| int tests_done = 0; |
| |
| /* Immediate operands are currently not supported here */ |
| assert(op->immediate_index == 0); |
| |
| /* For each operand, set a single bit to undefined and observe how |
| that propagates to the output. Do this for all bits in each |
| operand. */ |
| for (i = 0; i < 4; ++i) { |
| num_input_bits = bitsof_irtype(opnds[i].type); |
| |
| opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| opnds[2].vbits = defined_vbits(bitsof_irtype(opnds[2].type)); |
| opnds[3].vbits = defined_vbits(bitsof_irtype(opnds[3].type)); |
| |
| for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| opnds[i].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[i].type)); |
| |
| valgrind_execute_test(op, data); |
| |
| check_result_for_qernary(op, data); |
| |
| tests_done++; |
| } |
| } |
| return tests_done; |
| } |