1 /* -*- mode: C; c-basic-offset: 3; -*- */ 2 3 #include <assert.h> 4 #include "vtest.h" 5 6 7 /* Check the result of a quarternary operation. */ 8 static void 9 check_result_for_qernary(const irop_t *op, const test_data_t *data) 10 { 11 const opnd_t *result = &data->result; 12 const opnd_t *opnd1 = &data->opnds[0]; 13 const opnd_t *opnd2 = &data->opnds[1]; 14 const opnd_t *opnd3 = &data->opnds[2]; 15 const opnd_t *opnd4 = &data->opnds[3]; 16 vbits_t expected_vbits; 17 18 /* Only handle those undef-kinds that actually occur. */ 19 switch (op->undef_kind) { 20 case UNDEF_ALL: 21 expected_vbits = undefined_vbits(result->vbits.num_bits); 22 break; 23 24 case UNDEF_SAME: 25 // SAME with respect to the 1-bits in all operands 26 expected_vbits = or_vbits(or_vbits(or_vbits(opnd1->vbits, opnd2->vbits), 27 opnd3->vbits), opnd4->vbits); 28 break; 29 30 default: 31 panic(__func__); 32 } 33 34 if (! equal_vbits(result->vbits, expected_vbits)) 35 complain(op, data, expected_vbits); 36 } 37 38 39 int 40 test_qernary_op(const irop_t *op, test_data_t *data) 41 { 42 unsigned num_input_bits, i, bitpos; 43 opnd_t *opnds = data->opnds; 44 int tests_done = 0; 45 46 /* For each operand, set a single bit to undefined and observe how 47 that propagates to the output. Do this for all bits in each 48 operand. */ 49 for (i = 0; i < 4; ++i) { 50 num_input_bits = bitsof_irtype(opnds[i].type); 51 52 opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); 53 opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); 54 opnds[2].vbits = defined_vbits(bitsof_irtype(opnds[2].type)); 55 opnds[3].vbits = defined_vbits(bitsof_irtype(opnds[3].type)); 56 57 for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { 58 opnds[i].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[i].type)); 59 60 valgrind_execute_test(op, data); 61 62 check_result_for_qernary(op, data); 63 64 tests_done++; 65 } 66 } 67 return tests_done; 68 } 69
