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| 1 | namespace IR is | |
| 2 | use System.Reflection.Metadata.ILOpCode | |
| 3 | use IO.Std | |
| 4 | ||
| 5 | use Values | |
| 6 | ||
| 7 | class LABEL is | |
| 8 | _current_pass: string static | |
| 9 | _next_id: int static | |
| 10 | ||
| 11 | pass: string | |
| 12 | id: int | |
| 13 | ||
| 14 | init() is | |
| 15 | pass = _current_pass | |
| 16 | id = _next_id | |
| 17 | ||
| 18 | _next_id = _next_id + 1 | |
| 19 | si | |
| 20 | ||
| 21 | set_pass(p: string) static is | |
| 22 | _current_pass = p | |
| 23 | si | |
| 24 | ||
| 25 | reset_id() static is | |
| 26 | _next_id = 0 | |
| 27 | si | |
| 28 | ||
| 29 | to_string() -> string => "L{pass}{id}" | |
| 30 | si | |
| 31 | ||
| 32 | enum COMPARE is | |
| 33 | NONE, | |
| 34 | EQ, | |
| 35 | GE, | |
| 36 | GEU, | |
| 37 | GT, | |
| 38 | GTU, | |
| 39 | LE, | |
| 40 | LEU, | |
| 41 | LT, | |
| 42 | LTU, | |
| 43 | NE, | |
| 44 | Z, | |
| 45 | NZ | |
| 46 | si | |
| 47 | ||
| 48 | enum BRANCH is | |
| 49 | NONE, | |
| 50 | EQ, | |
| 51 | GE, | |
| 52 | GEU, | |
| 53 | GT, | |
| 54 | GTU, | |
| 55 | LE, | |
| 56 | LEU, | |
| 57 | LT, | |
| 58 | LTU, | |
| 59 | NE, | |
| 60 | Z, | |
| 61 | NZ, | |
| 62 | ALWAYS | |
| 63 | si | |
| 64 | ||
| 65 | class BRANCHER is | |
| 66 | _branch_instructions: Collections.MAP[BRANCH, ILOpCode] | |
| 67 | _compare_instructions: Collections.MAP[COMPARE, string] | |
| 68 | ||
| 69 | init() is | |
| 70 | _branch_instructions = Collections.MAP[BRANCH, ILOpCode]() | |
| 71 | _compare_instructions = Collections.MAP[COMPARE, string]() | |
| 72 | ||
| 73 | _branch_instructions[BRANCH.EQ] = ILOpCode.BEQ | |
| 74 | _branch_instructions[BRANCH.GE] = ILOpCode.BGE | |
| 75 | _branch_instructions[BRANCH.GEU] = ILOpCode.BGE_UN | |
| 76 | _branch_instructions[BRANCH.GT] = ILOpCode.BGT | |
| 77 | _branch_instructions[BRANCH.GTU] = ILOpCode.BGT_UN | |
| 78 | _branch_instructions[BRANCH.LE] = ILOpCode.BLE | |
| 79 | _branch_instructions[BRANCH.LEU] = ILOpCode.BLE_UN | |
| 80 | _branch_instructions[BRANCH.LT] = ILOpCode.BLT | |
| 81 | _branch_instructions[BRANCH.LTU] = ILOpCode.BLT_UN | |
| 82 | _branch_instructions[BRANCH.NE] = ILOpCode.BNE_UN | |
| 83 | _branch_instructions[BRANCH.Z] = ILOpCode.BRFALSE | |
| 84 | _branch_instructions[BRANCH.NZ] = ILOpCode.BRTRUE | |
| 85 | _branch_instructions[BRANCH.ALWAYS] = ILOpCode.BR | |
| 86 | ||
| 87 | _compare_instructions[COMPARE.EQ] = "ceq" | |
| 88 | _compare_instructions[COMPARE.GE] = "cge" | |
| 89 | _compare_instructions[COMPARE.GEU] = "cge.un" | |
| 90 | _compare_instructions[COMPARE.GT] = "cgt" | |
| 91 | _compare_instructions[COMPARE.GTU] = "cgt.un" | |
| 92 | _compare_instructions[COMPARE.LE] = "cle" | |
| 93 | _compare_instructions[COMPARE.LEU] = "cle.un" | |
| 94 | _compare_instructions[COMPARE.LT] = "clt" | |
| 95 | _compare_instructions[COMPARE.LTU] = "clt.un" | |
| 96 | _compare_instructions[COMPARE.NE] = "cne.un" | |
| 97 | _compare_instructions[COMPARE.Z] = "ctrue" | |
| 98 | _compare_instructions[COMPARE.NZ] = "cfalse" | |
| 99 | si | |
| 100 | ||
| 101 | get_for(block: BLOCK) -> BLOCK_BRANCHER => | |
| 102 | BLOCK_BRANCHER(block, self) | |
| 103 | ||
| 104 | label(block: BLOCK, l: LABEL, comment: string) is | |
| 105 | block.add(Values.MARK_LABEL(l)) | |
| 106 | si | |
| 107 | ||
| 108 | label(block: BLOCK, l: LABEL) is | |
| 109 | block.add(Values.MARK_LABEL(l)) | |
| 110 | si | |
| 111 | ||
| 112 | leave(block: BLOCK, l: LABEL) is | |
| 113 | block.add(Values.BRANCH_TO(ILOpCode.LEAVE, l)) | |
| 114 | si | |
| 115 | ||
| 116 | branch(block: BLOCK, b: BRANCH, value: Value, l: LABEL, comment: string) is | |
| 117 | block.add(value) | |
| 118 | ||
| 119 | block.add(Values.BRANCH_TO(get_branch_instruction(b), l)) | |
| 120 | si | |
| 121 | ||
| 122 | branch(block: BLOCK, b: BRANCH, value: Value, l: LABEL) is | |
| 123 | block.add(value) | |
| 124 | ||
| 125 | block.add(Values.BRANCH_TO(get_branch_instruction(b), l)) | |
| 126 | si | |
| 127 | ||
| 128 | branch(block: BLOCK, b: BRANCH, left: Value, right: Value, l: LABEL, comment: string) is | |
| 129 | block.add(left) | |
| 130 | block.add(right) | |
| 131 | ||
| 132 | block.add(Values.BRANCH_TO(get_branch_instruction(b), l)) | |
| 133 | si | |
| 134 | ||
| 135 | branch(block: BLOCK, b: BRANCH, left: Value, right: Value, l: LABEL) is | |
| 136 | block.add(left) | |
| 137 | block.add(right) | |
| 138 | ||
| 139 | block.add(Values.BRANCH_TO(get_branch_instruction(b), l)) | |
| 140 | si | |
| 141 | ||
| 142 | branch(block: BLOCK, l: LABEL, comment: string) is | |
| 143 | block.add(Values.BRANCH_TO(_branch_instructions[BRANCH.ALWAYS], l)) | |
| 144 | si | |
| 145 | ||
| 146 | branch(block: BLOCK, l: LABEL) is | |
| 147 | block.add(Values.BRANCH_TO(_branch_instructions[BRANCH.ALWAYS], l)) | |
| 148 | si | |
| 149 | ||
| 150 | get_branch_instruction(b: BRANCH) -> ILOpCode => | |
| 151 | _branch_instructions[b] | |
| 152 | si | |
| 153 | ||
| 154 | struct BLOCK_BRANCHER(_block: BLOCK, _brancher: BRANCHER) is | |
| 155 | label(l: LABEL, comment: string) is | |
| 156 | _brancher.label(_block, l, comment) | |
| 157 | si | |
| 158 | ||
| 159 | label(l: LABEL) is | |
| 160 | _brancher.label(_block, l) | |
| 161 | si | |
| 162 | ||
| 163 | leave(l: LABEL) is | |
| 164 | _brancher.leave(_block, l) | |
| 165 | si | |
| 166 | ||
| 167 | branch(b: BRANCH, value: Value, l: LABEL, comment: string) is | |
| 168 | _brancher.branch(_block, b, value, l, comment) | |
| 169 | si | |
| 170 | ||
| 171 | branch(b: BRANCH, value: Value, l: LABEL) is | |
| 172 | _brancher.branch(_block, b, value, l) | |
| 173 | si | |
| 174 | ||
| 175 | branch(b: BRANCH, left: Value, right: Value, l: LABEL, comment: string) is | |
| 176 | _brancher.branch(_block, b, left, right, l, comment) | |
| 177 | si | |
| 178 | ||
| 179 | branch(b: BRANCH, left: Value, right: Value, l: LABEL) is | |
| 180 | _brancher.branch(_block, b, left, right, l) | |
| 181 | si | |
| 182 | ||
| 183 | branch(l: LABEL, comment: string) is | |
| 184 | _brancher.branch(_block, l, comment) | |
| 185 | si | |
| 186 | ||
| 187 | branch(l: LABEL) is | |
| 188 | _brancher.branch(_block, l) | |
| 189 | si | |
| 190 | si | |
| 191 | si |