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*: add preliminary floating point support no x86 intrinsics just yet, but I did add altivec since it's (arguably) the simplest :)
author Paper <paper@tflc.us>
date Wed, 30 Apr 2025 18:36:38 -0400
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7955bed1d169 *: add preliminary floating point support
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1 /**
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2 * vec - a tiny SIMD vector library in C99
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3 *
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4 * Copyright (c) 2024-2025 Paper
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5 *
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6 * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 * of this software and associated documentation files (the "Software"), to deal
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8 * in the Software without restriction, including without limitation the rights
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9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 * copies of the Software, and to permit persons to whom the Software is
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11 * furnished to do so, subject to the following conditions:
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12 *
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13 * The above copyright notice and this permission notice shall be included in all
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14 * copies or substantial portions of the Software.
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15 *
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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22 * SOFTWARE.
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23 **/
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24
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25 #include <stdio.h>
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26 #include <stdlib.h>
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27 #include <string.h>
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28
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29 enum {
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30 OP_SPLAT,
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31 OP_LOAD_ALIGNED,
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32 OP_LOAD,
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33 OP_STORE_ALIGNED,
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34 OP_STORE,
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35 OP_ADD,
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36 OP_SUB,
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37 OP_MUL,
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38 OP_DIV,
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39 OP_MOD,
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40 OP_AVG,
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41 OP_AND,
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42 OP_OR,
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43 OP_XOR,
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44 OP_NOT,
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45 OP_CMPLT,
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46 OP_CMPEQ,
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47 OP_CMPGT,
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48 OP_CMPLE, /* these are after the other ones to make */
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49 OP_CMPGE, /* implementing them as simple as NOT(CMPLT|CMPGT) */
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50 OP_MIN,
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51 OP_MAX,
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52 OP_RSHIFT,
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53 OP_LRSHIFT,
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54 OP_LSHIFT,
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55
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56 /* use this for array sizes and the like */
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57 OP_FINAL_,
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58 };
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59
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60 enum {
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61 TYPE_INT, /* signed int */
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62 TYPE_UINT, /* unsigned int */
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63 TYPE_FLOAT, /* IEEE float */
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64 };
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65
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66 struct op_info {
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67 const char *u;
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68 const char *l;
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69
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70 /* print return type to stdout */
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71 void (*pret)(int op, int type, int bits, int size);
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72
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73 /* print params type to stdout */
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74 void (*pparam)(int op, int type, int bits, int size);
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75 };
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76
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77 struct strs {
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78 const char *l;
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79 const char *u;
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80 };
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81
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82 extern struct strs type_str[];
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83
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84 struct op_info *gen_op_info(int op);
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85
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86 struct op_impl {
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87 /* return 1 if it's implemented for a specific set of
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88 * inputs :)
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89 *
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90 * if this function is not implemented, and `pbody`
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91 * is not NULL, then it is assumed that there are
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92 * no restrictions on what type, bits, or size can
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93 * be used. beware! */
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94 int (*check)(int op, int type, int bits, int size);
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95
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96 /* prints any additional preprocessor checks needed
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97 * should start with a conditional, usually && */
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98 void (*ppcheck)(int op, int type, int bits, int size);
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99
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100 /* sherman?
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101 * (this prints the actual body of the function...) */
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102 void (*pbody)(int op, int type, int bits, int size);
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103 };
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104
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105 int gen(struct op_impl op_impl[OP_FINAL_], const char *name);
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106
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107 void gen_print_vtype(int type, int bits, int size);
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108 void gen_print_stype(int type, int bits);