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1 | 8f2e8c07 | Kirill Batuzov | /*
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2 | 8f2e8c07 | Kirill Batuzov | * Optimizations for Tiny Code Generator for QEMU
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3 | 8f2e8c07 | Kirill Batuzov | *
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4 | 8f2e8c07 | Kirill Batuzov | * Copyright (c) 2010 Samsung Electronics.
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5 | 8f2e8c07 | Kirill Batuzov | * Contributed by Kirill Batuzov <batuzovk@ispras.ru>
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6 | 8f2e8c07 | Kirill Batuzov | *
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7 | 8f2e8c07 | Kirill Batuzov | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 8f2e8c07 | Kirill Batuzov | * of this software and associated documentation files (the "Software"), to deal
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9 | 8f2e8c07 | Kirill Batuzov | * in the Software without restriction, including without limitation the rights
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10 | 8f2e8c07 | Kirill Batuzov | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 8f2e8c07 | Kirill Batuzov | * copies of the Software, and to permit persons to whom the Software is
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12 | 8f2e8c07 | Kirill Batuzov | * furnished to do so, subject to the following conditions:
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13 | 8f2e8c07 | Kirill Batuzov | *
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14 | 8f2e8c07 | Kirill Batuzov | * The above copyright notice and this permission notice shall be included in
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15 | 8f2e8c07 | Kirill Batuzov | * all copies or substantial portions of the Software.
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16 | 8f2e8c07 | Kirill Batuzov | *
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17 | 8f2e8c07 | Kirill Batuzov | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 8f2e8c07 | Kirill Batuzov | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 8f2e8c07 | Kirill Batuzov | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 8f2e8c07 | Kirill Batuzov | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 8f2e8c07 | Kirill Batuzov | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 8f2e8c07 | Kirill Batuzov | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 8f2e8c07 | Kirill Batuzov | * THE SOFTWARE.
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24 | 8f2e8c07 | Kirill Batuzov | */
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25 | 8f2e8c07 | Kirill Batuzov | |
26 | 8f2e8c07 | Kirill Batuzov | #include "config.h" |
27 | 8f2e8c07 | Kirill Batuzov | |
28 | 8f2e8c07 | Kirill Batuzov | #include <stdlib.h> |
29 | 8f2e8c07 | Kirill Batuzov | #include <stdio.h> |
30 | 8f2e8c07 | Kirill Batuzov | |
31 | 8f2e8c07 | Kirill Batuzov | #include "qemu-common.h" |
32 | 8f2e8c07 | Kirill Batuzov | #include "tcg-op.h" |
33 | 8f2e8c07 | Kirill Batuzov | |
34 | 8f2e8c07 | Kirill Batuzov | #define CASE_OP_32_64(x) \
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35 | 8f2e8c07 | Kirill Batuzov | glue(glue(case INDEX_op_, x), _i32): \
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36 | 8f2e8c07 | Kirill Batuzov | glue(glue(case INDEX_op_, x), _i64)
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37 | 8f2e8c07 | Kirill Batuzov | |
38 | 22613af4 | Kirill Batuzov | typedef enum { |
39 | 22613af4 | Kirill Batuzov | TCG_TEMP_UNDEF = 0,
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40 | 22613af4 | Kirill Batuzov | TCG_TEMP_CONST, |
41 | 22613af4 | Kirill Batuzov | TCG_TEMP_COPY, |
42 | 22613af4 | Kirill Batuzov | TCG_TEMP_HAS_COPY, |
43 | 22613af4 | Kirill Batuzov | TCG_TEMP_ANY |
44 | 22613af4 | Kirill Batuzov | } tcg_temp_state; |
45 | 22613af4 | Kirill Batuzov | |
46 | 22613af4 | Kirill Batuzov | struct tcg_temp_info {
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47 | 22613af4 | Kirill Batuzov | tcg_temp_state state; |
48 | 22613af4 | Kirill Batuzov | uint16_t prev_copy; |
49 | 22613af4 | Kirill Batuzov | uint16_t next_copy; |
50 | 22613af4 | Kirill Batuzov | tcg_target_ulong val; |
51 | 22613af4 | Kirill Batuzov | }; |
52 | 22613af4 | Kirill Batuzov | |
53 | 22613af4 | Kirill Batuzov | static struct tcg_temp_info temps[TCG_MAX_TEMPS]; |
54 | 22613af4 | Kirill Batuzov | |
55 | 22613af4 | Kirill Batuzov | /* Reset TEMP's state to TCG_TEMP_ANY. If TEMP was a representative of some
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56 | 22613af4 | Kirill Batuzov | class of equivalent temp's, a new representative should be chosen in this
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57 | 22613af4 | Kirill Batuzov | class. */
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58 | 22613af4 | Kirill Batuzov | static void reset_temp(TCGArg temp, int nb_temps, int nb_globals) |
59 | 22613af4 | Kirill Batuzov | { |
60 | 22613af4 | Kirill Batuzov | int i;
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61 | 22613af4 | Kirill Batuzov | TCGArg new_base = (TCGArg)-1;
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62 | 22613af4 | Kirill Batuzov | if (temps[temp].state == TCG_TEMP_HAS_COPY) {
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63 | 22613af4 | Kirill Batuzov | for (i = temps[temp].next_copy; i != temp; i = temps[i].next_copy) {
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64 | 22613af4 | Kirill Batuzov | if (i >= nb_globals) {
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65 | 22613af4 | Kirill Batuzov | temps[i].state = TCG_TEMP_HAS_COPY; |
66 | 22613af4 | Kirill Batuzov | new_base = i; |
67 | 22613af4 | Kirill Batuzov | break;
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68 | 22613af4 | Kirill Batuzov | } |
69 | 22613af4 | Kirill Batuzov | } |
70 | 22613af4 | Kirill Batuzov | for (i = temps[temp].next_copy; i != temp; i = temps[i].next_copy) {
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71 | 22613af4 | Kirill Batuzov | if (new_base == (TCGArg)-1) { |
72 | 22613af4 | Kirill Batuzov | temps[i].state = TCG_TEMP_ANY; |
73 | 22613af4 | Kirill Batuzov | } else {
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74 | 22613af4 | Kirill Batuzov | temps[i].val = new_base; |
75 | 22613af4 | Kirill Batuzov | } |
76 | 22613af4 | Kirill Batuzov | } |
77 | 22613af4 | Kirill Batuzov | temps[temps[temp].next_copy].prev_copy = temps[temp].prev_copy; |
78 | 22613af4 | Kirill Batuzov | temps[temps[temp].prev_copy].next_copy = temps[temp].next_copy; |
79 | 22613af4 | Kirill Batuzov | } else if (temps[temp].state == TCG_TEMP_COPY) { |
80 | 22613af4 | Kirill Batuzov | temps[temps[temp].next_copy].prev_copy = temps[temp].prev_copy; |
81 | 22613af4 | Kirill Batuzov | temps[temps[temp].prev_copy].next_copy = temps[temp].next_copy; |
82 | 22613af4 | Kirill Batuzov | new_base = temps[temp].val; |
83 | 22613af4 | Kirill Batuzov | } |
84 | 22613af4 | Kirill Batuzov | temps[temp].state = TCG_TEMP_ANY; |
85 | 22613af4 | Kirill Batuzov | if (new_base != (TCGArg)-1 && temps[new_base].next_copy == new_base) { |
86 | 22613af4 | Kirill Batuzov | temps[new_base].state = TCG_TEMP_ANY; |
87 | 22613af4 | Kirill Batuzov | } |
88 | 22613af4 | Kirill Batuzov | } |
89 | 22613af4 | Kirill Batuzov | |
90 | fe0de7aa | Blue Swirl | static int op_bits(TCGOpcode op) |
91 | 22613af4 | Kirill Batuzov | { |
92 | 8399ad59 | Richard Henderson | const TCGOpDef *def = &tcg_op_defs[op];
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93 | 8399ad59 | Richard Henderson | return def->flags & TCG_OPF_64BIT ? 64 : 32; |
94 | 22613af4 | Kirill Batuzov | } |
95 | 22613af4 | Kirill Batuzov | |
96 | fe0de7aa | Blue Swirl | static TCGOpcode op_to_movi(TCGOpcode op)
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97 | 22613af4 | Kirill Batuzov | { |
98 | 22613af4 | Kirill Batuzov | switch (op_bits(op)) {
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99 | 22613af4 | Kirill Batuzov | case 32: |
100 | 22613af4 | Kirill Batuzov | return INDEX_op_movi_i32;
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101 | 22613af4 | Kirill Batuzov | case 64: |
102 | 22613af4 | Kirill Batuzov | return INDEX_op_movi_i64;
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103 | 22613af4 | Kirill Batuzov | default:
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104 | 22613af4 | Kirill Batuzov | fprintf(stderr, "op_to_movi: unexpected return value of "
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105 | 22613af4 | Kirill Batuzov | "function op_bits.\n");
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106 | 22613af4 | Kirill Batuzov | tcg_abort(); |
107 | 22613af4 | Kirill Batuzov | } |
108 | 22613af4 | Kirill Batuzov | } |
109 | 22613af4 | Kirill Batuzov | |
110 | e31b0a7c | Blue Swirl | static void tcg_opt_gen_mov(TCGContext *s, TCGArg *gen_args, TCGArg dst, |
111 | e31b0a7c | Blue Swirl | TCGArg src, int nb_temps, int nb_globals) |
112 | 22613af4 | Kirill Batuzov | { |
113 | 22613af4 | Kirill Batuzov | reset_temp(dst, nb_temps, nb_globals); |
114 | 22613af4 | Kirill Batuzov | assert(temps[src].state != TCG_TEMP_COPY); |
115 | e31b0a7c | Blue Swirl | /* Don't try to copy if one of temps is a global or either one
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116 | e31b0a7c | Blue Swirl | is local and another is register */
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117 | e31b0a7c | Blue Swirl | if (src >= nb_globals && dst >= nb_globals &&
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118 | e31b0a7c | Blue Swirl | tcg_arg_is_local(s, src) == tcg_arg_is_local(s, dst)) { |
119 | 22613af4 | Kirill Batuzov | assert(temps[src].state != TCG_TEMP_CONST); |
120 | 22613af4 | Kirill Batuzov | if (temps[src].state != TCG_TEMP_HAS_COPY) {
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121 | 22613af4 | Kirill Batuzov | temps[src].state = TCG_TEMP_HAS_COPY; |
122 | 22613af4 | Kirill Batuzov | temps[src].next_copy = src; |
123 | 22613af4 | Kirill Batuzov | temps[src].prev_copy = src; |
124 | 22613af4 | Kirill Batuzov | } |
125 | 22613af4 | Kirill Batuzov | temps[dst].state = TCG_TEMP_COPY; |
126 | 22613af4 | Kirill Batuzov | temps[dst].val = src; |
127 | 22613af4 | Kirill Batuzov | temps[dst].next_copy = temps[src].next_copy; |
128 | 22613af4 | Kirill Batuzov | temps[dst].prev_copy = src; |
129 | 22613af4 | Kirill Batuzov | temps[temps[dst].next_copy].prev_copy = dst; |
130 | 22613af4 | Kirill Batuzov | temps[src].next_copy = dst; |
131 | 22613af4 | Kirill Batuzov | } |
132 | 22613af4 | Kirill Batuzov | gen_args[0] = dst;
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133 | 22613af4 | Kirill Batuzov | gen_args[1] = src;
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134 | 22613af4 | Kirill Batuzov | } |
135 | 22613af4 | Kirill Batuzov | |
136 | 22613af4 | Kirill Batuzov | static void tcg_opt_gen_movi(TCGArg *gen_args, TCGArg dst, TCGArg val, |
137 | 22613af4 | Kirill Batuzov | int nb_temps, int nb_globals) |
138 | 22613af4 | Kirill Batuzov | { |
139 | 22613af4 | Kirill Batuzov | reset_temp(dst, nb_temps, nb_globals); |
140 | 22613af4 | Kirill Batuzov | temps[dst].state = TCG_TEMP_CONST; |
141 | 22613af4 | Kirill Batuzov | temps[dst].val = val; |
142 | 22613af4 | Kirill Batuzov | gen_args[0] = dst;
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143 | 22613af4 | Kirill Batuzov | gen_args[1] = val;
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144 | 22613af4 | Kirill Batuzov | } |
145 | 22613af4 | Kirill Batuzov | |
146 | fe0de7aa | Blue Swirl | static TCGOpcode op_to_mov(TCGOpcode op)
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147 | 53108fb5 | Kirill Batuzov | { |
148 | 53108fb5 | Kirill Batuzov | switch (op_bits(op)) {
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149 | 53108fb5 | Kirill Batuzov | case 32: |
150 | 53108fb5 | Kirill Batuzov | return INDEX_op_mov_i32;
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151 | 53108fb5 | Kirill Batuzov | case 64: |
152 | 53108fb5 | Kirill Batuzov | return INDEX_op_mov_i64;
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153 | 53108fb5 | Kirill Batuzov | default:
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154 | 53108fb5 | Kirill Batuzov | fprintf(stderr, "op_to_mov: unexpected return value of "
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155 | 53108fb5 | Kirill Batuzov | "function op_bits.\n");
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156 | 53108fb5 | Kirill Batuzov | tcg_abort(); |
157 | 53108fb5 | Kirill Batuzov | } |
158 | 53108fb5 | Kirill Batuzov | } |
159 | 53108fb5 | Kirill Batuzov | |
160 | fe0de7aa | Blue Swirl | static TCGArg do_constant_folding_2(TCGOpcode op, TCGArg x, TCGArg y)
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161 | 53108fb5 | Kirill Batuzov | { |
162 | 53108fb5 | Kirill Batuzov | switch (op) {
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163 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(add): |
164 | 53108fb5 | Kirill Batuzov | return x + y;
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165 | 53108fb5 | Kirill Batuzov | |
166 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(sub): |
167 | 53108fb5 | Kirill Batuzov | return x - y;
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168 | 53108fb5 | Kirill Batuzov | |
169 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(mul): |
170 | 53108fb5 | Kirill Batuzov | return x * y;
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171 | 53108fb5 | Kirill Batuzov | |
172 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(and): |
173 | 9a81090b | Kirill Batuzov | return x & y;
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174 | 9a81090b | Kirill Batuzov | |
175 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(or): |
176 | 9a81090b | Kirill Batuzov | return x | y;
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177 | 9a81090b | Kirill Batuzov | |
178 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(xor): |
179 | 9a81090b | Kirill Batuzov | return x ^ y;
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180 | 9a81090b | Kirill Batuzov | |
181 | 55c0975c | Kirill Batuzov | case INDEX_op_shl_i32:
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182 | 55c0975c | Kirill Batuzov | return (uint32_t)x << (uint32_t)y;
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183 | 55c0975c | Kirill Batuzov | |
184 | 55c0975c | Kirill Batuzov | case INDEX_op_shl_i64:
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185 | 55c0975c | Kirill Batuzov | return (uint64_t)x << (uint64_t)y;
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186 | 55c0975c | Kirill Batuzov | |
187 | 55c0975c | Kirill Batuzov | case INDEX_op_shr_i32:
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188 | 55c0975c | Kirill Batuzov | return (uint32_t)x >> (uint32_t)y;
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189 | 55c0975c | Kirill Batuzov | |
190 | 55c0975c | Kirill Batuzov | case INDEX_op_shr_i64:
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191 | 55c0975c | Kirill Batuzov | return (uint64_t)x >> (uint64_t)y;
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192 | 55c0975c | Kirill Batuzov | |
193 | 55c0975c | Kirill Batuzov | case INDEX_op_sar_i32:
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194 | 55c0975c | Kirill Batuzov | return (int32_t)x >> (int32_t)y;
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195 | 55c0975c | Kirill Batuzov | |
196 | 55c0975c | Kirill Batuzov | case INDEX_op_sar_i64:
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197 | 55c0975c | Kirill Batuzov | return (int64_t)x >> (int64_t)y;
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198 | 55c0975c | Kirill Batuzov | |
199 | 55c0975c | Kirill Batuzov | case INDEX_op_rotr_i32:
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200 | 25c4d9cc | Richard Henderson | x = ((uint32_t)x << (32 - y)) | ((uint32_t)x >> y);
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201 | 55c0975c | Kirill Batuzov | return x;
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202 | 55c0975c | Kirill Batuzov | |
203 | 55c0975c | Kirill Batuzov | case INDEX_op_rotr_i64:
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204 | 25c4d9cc | Richard Henderson | x = ((uint64_t)x << (64 - y)) | ((uint64_t)x >> y);
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205 | 55c0975c | Kirill Batuzov | return x;
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206 | 55c0975c | Kirill Batuzov | |
207 | 55c0975c | Kirill Batuzov | case INDEX_op_rotl_i32:
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208 | 25c4d9cc | Richard Henderson | x = ((uint32_t)x << y) | ((uint32_t)x >> (32 - y));
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209 | 55c0975c | Kirill Batuzov | return x;
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210 | 55c0975c | Kirill Batuzov | |
211 | 55c0975c | Kirill Batuzov | case INDEX_op_rotl_i64:
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212 | 25c4d9cc | Richard Henderson | x = ((uint64_t)x << y) | ((uint64_t)x >> (64 - y));
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213 | 55c0975c | Kirill Batuzov | return x;
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214 | 25c4d9cc | Richard Henderson | |
215 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(not): |
216 | a640f031 | Kirill Batuzov | return ~x;
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217 | 25c4d9cc | Richard Henderson | |
218 | cb25c80a | Richard Henderson | CASE_OP_32_64(neg): |
219 | cb25c80a | Richard Henderson | return -x;
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220 | cb25c80a | Richard Henderson | |
221 | cb25c80a | Richard Henderson | CASE_OP_32_64(andc): |
222 | cb25c80a | Richard Henderson | return x & ~y;
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223 | cb25c80a | Richard Henderson | |
224 | cb25c80a | Richard Henderson | CASE_OP_32_64(orc): |
225 | cb25c80a | Richard Henderson | return x | ~y;
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226 | cb25c80a | Richard Henderson | |
227 | cb25c80a | Richard Henderson | CASE_OP_32_64(eqv): |
228 | cb25c80a | Richard Henderson | return ~(x ^ y);
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229 | cb25c80a | Richard Henderson | |
230 | cb25c80a | Richard Henderson | CASE_OP_32_64(nand): |
231 | cb25c80a | Richard Henderson | return ~(x & y);
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232 | cb25c80a | Richard Henderson | |
233 | cb25c80a | Richard Henderson | CASE_OP_32_64(nor): |
234 | cb25c80a | Richard Henderson | return ~(x | y);
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235 | cb25c80a | Richard Henderson | |
236 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext8s): |
237 | a640f031 | Kirill Batuzov | return (int8_t)x;
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238 | 25c4d9cc | Richard Henderson | |
239 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext16s): |
240 | a640f031 | Kirill Batuzov | return (int16_t)x;
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241 | 25c4d9cc | Richard Henderson | |
242 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext8u): |
243 | a640f031 | Kirill Batuzov | return (uint8_t)x;
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244 | 25c4d9cc | Richard Henderson | |
245 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext16u): |
246 | a640f031 | Kirill Batuzov | return (uint16_t)x;
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247 | a640f031 | Kirill Batuzov | |
248 | a640f031 | Kirill Batuzov | case INDEX_op_ext32s_i64:
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249 | a640f031 | Kirill Batuzov | return (int32_t)x;
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250 | a640f031 | Kirill Batuzov | |
251 | a640f031 | Kirill Batuzov | case INDEX_op_ext32u_i64:
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252 | a640f031 | Kirill Batuzov | return (uint32_t)x;
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253 | a640f031 | Kirill Batuzov | |
254 | 53108fb5 | Kirill Batuzov | default:
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255 | 53108fb5 | Kirill Batuzov | fprintf(stderr, |
256 | 53108fb5 | Kirill Batuzov | "Unrecognized operation %d in do_constant_folding.\n", op);
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257 | 53108fb5 | Kirill Batuzov | tcg_abort(); |
258 | 53108fb5 | Kirill Batuzov | } |
259 | 53108fb5 | Kirill Batuzov | } |
260 | 53108fb5 | Kirill Batuzov | |
261 | fe0de7aa | Blue Swirl | static TCGArg do_constant_folding(TCGOpcode op, TCGArg x, TCGArg y)
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262 | 53108fb5 | Kirill Batuzov | { |
263 | 53108fb5 | Kirill Batuzov | TCGArg res = do_constant_folding_2(op, x, y); |
264 | 53108fb5 | Kirill Batuzov | if (op_bits(op) == 32) { |
265 | 53108fb5 | Kirill Batuzov | res &= 0xffffffff;
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266 | 53108fb5 | Kirill Batuzov | } |
267 | 53108fb5 | Kirill Batuzov | return res;
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268 | 53108fb5 | Kirill Batuzov | } |
269 | 53108fb5 | Kirill Batuzov | |
270 | f8dd19e5 | Aurelien Jarno | static TCGArg do_constant_folding_cond(TCGOpcode op, TCGArg x,
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271 | f8dd19e5 | Aurelien Jarno | TCGArg y, TCGCond c) |
272 | f8dd19e5 | Aurelien Jarno | { |
273 | f8dd19e5 | Aurelien Jarno | switch (op_bits(op)) {
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274 | f8dd19e5 | Aurelien Jarno | case 32: |
275 | f8dd19e5 | Aurelien Jarno | switch (c) {
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276 | f8dd19e5 | Aurelien Jarno | case TCG_COND_EQ:
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277 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x == (uint32_t)y;
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278 | f8dd19e5 | Aurelien Jarno | case TCG_COND_NE:
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279 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x != (uint32_t)y;
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280 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LT:
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281 | f8dd19e5 | Aurelien Jarno | return (int32_t)x < (int32_t)y;
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282 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GE:
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283 | f8dd19e5 | Aurelien Jarno | return (int32_t)x >= (int32_t)y;
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284 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LE:
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285 | f8dd19e5 | Aurelien Jarno | return (int32_t)x <= (int32_t)y;
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286 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GT:
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287 | f8dd19e5 | Aurelien Jarno | return (int32_t)x > (int32_t)y;
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288 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LTU:
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289 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x < (uint32_t)y;
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290 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GEU:
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291 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x >= (uint32_t)y;
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292 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LEU:
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293 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x <= (uint32_t)y;
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294 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GTU:
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295 | f8dd19e5 | Aurelien Jarno | return (uint32_t)x > (uint32_t)y;
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296 | f8dd19e5 | Aurelien Jarno | } |
297 | f8dd19e5 | Aurelien Jarno | break;
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298 | f8dd19e5 | Aurelien Jarno | case 64: |
299 | f8dd19e5 | Aurelien Jarno | switch (c) {
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300 | f8dd19e5 | Aurelien Jarno | case TCG_COND_EQ:
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301 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x == (uint64_t)y;
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302 | f8dd19e5 | Aurelien Jarno | case TCG_COND_NE:
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303 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x != (uint64_t)y;
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304 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LT:
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305 | f8dd19e5 | Aurelien Jarno | return (int64_t)x < (int64_t)y;
|
306 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GE:
|
307 | f8dd19e5 | Aurelien Jarno | return (int64_t)x >= (int64_t)y;
|
308 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LE:
|
309 | f8dd19e5 | Aurelien Jarno | return (int64_t)x <= (int64_t)y;
|
310 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GT:
|
311 | f8dd19e5 | Aurelien Jarno | return (int64_t)x > (int64_t)y;
|
312 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LTU:
|
313 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x < (uint64_t)y;
|
314 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GEU:
|
315 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x >= (uint64_t)y;
|
316 | f8dd19e5 | Aurelien Jarno | case TCG_COND_LEU:
|
317 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x <= (uint64_t)y;
|
318 | f8dd19e5 | Aurelien Jarno | case TCG_COND_GTU:
|
319 | f8dd19e5 | Aurelien Jarno | return (uint64_t)x > (uint64_t)y;
|
320 | f8dd19e5 | Aurelien Jarno | } |
321 | f8dd19e5 | Aurelien Jarno | break;
|
322 | f8dd19e5 | Aurelien Jarno | } |
323 | f8dd19e5 | Aurelien Jarno | |
324 | f8dd19e5 | Aurelien Jarno | fprintf(stderr, |
325 | f8dd19e5 | Aurelien Jarno | "Unrecognized bitness %d or condition %d in "
|
326 | f8dd19e5 | Aurelien Jarno | "do_constant_folding_cond.\n", op_bits(op), c);
|
327 | f8dd19e5 | Aurelien Jarno | tcg_abort(); |
328 | f8dd19e5 | Aurelien Jarno | } |
329 | f8dd19e5 | Aurelien Jarno | |
330 | f8dd19e5 | Aurelien Jarno | |
331 | 22613af4 | Kirill Batuzov | /* Propagate constants and copies, fold constant expressions. */
|
332 | 8f2e8c07 | Kirill Batuzov | static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
|
333 | 8f2e8c07 | Kirill Batuzov | TCGArg *args, TCGOpDef *tcg_op_defs) |
334 | 8f2e8c07 | Kirill Batuzov | { |
335 | fe0de7aa | Blue Swirl | int i, nb_ops, op_index, nb_temps, nb_globals, nb_call_args;
|
336 | fe0de7aa | Blue Swirl | TCGOpcode op; |
337 | 8f2e8c07 | Kirill Batuzov | const TCGOpDef *def;
|
338 | 8f2e8c07 | Kirill Batuzov | TCGArg *gen_args; |
339 | 53108fb5 | Kirill Batuzov | TCGArg tmp; |
340 | 22613af4 | Kirill Batuzov | /* Array VALS has an element for each temp.
|
341 | 22613af4 | Kirill Batuzov | If this temp holds a constant then its value is kept in VALS' element.
|
342 | 22613af4 | Kirill Batuzov | If this temp is a copy of other ones then this equivalence class'
|
343 | 22613af4 | Kirill Batuzov | representative is kept in VALS' element.
|
344 | 22613af4 | Kirill Batuzov | If this temp is neither copy nor constant then corresponding VALS'
|
345 | 22613af4 | Kirill Batuzov | element is unused. */
|
346 | 8f2e8c07 | Kirill Batuzov | |
347 | 8f2e8c07 | Kirill Batuzov | nb_temps = s->nb_temps; |
348 | 8f2e8c07 | Kirill Batuzov | nb_globals = s->nb_globals; |
349 | 22613af4 | Kirill Batuzov | memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); |
350 | 8f2e8c07 | Kirill Batuzov | |
351 | 8f2e8c07 | Kirill Batuzov | nb_ops = tcg_opc_ptr - gen_opc_buf; |
352 | 8f2e8c07 | Kirill Batuzov | gen_args = args; |
353 | 8f2e8c07 | Kirill Batuzov | for (op_index = 0; op_index < nb_ops; op_index++) { |
354 | 8f2e8c07 | Kirill Batuzov | op = gen_opc_buf[op_index]; |
355 | 8f2e8c07 | Kirill Batuzov | def = &tcg_op_defs[op]; |
356 | 22613af4 | Kirill Batuzov | /* Do copy propagation */
|
357 | 22613af4 | Kirill Batuzov | if (!(def->flags & (TCG_OPF_CALL_CLOBBER | TCG_OPF_SIDE_EFFECTS))) {
|
358 | 22613af4 | Kirill Batuzov | assert(op != INDEX_op_call); |
359 | 22613af4 | Kirill Batuzov | for (i = def->nb_oargs; i < def->nb_oargs + def->nb_iargs; i++) {
|
360 | 22613af4 | Kirill Batuzov | if (temps[args[i]].state == TCG_TEMP_COPY) {
|
361 | 22613af4 | Kirill Batuzov | args[i] = temps[args[i]].val; |
362 | 22613af4 | Kirill Batuzov | } |
363 | 22613af4 | Kirill Batuzov | } |
364 | 22613af4 | Kirill Batuzov | } |
365 | 22613af4 | Kirill Batuzov | |
366 | 53108fb5 | Kirill Batuzov | /* For commutative operations make constant second argument */
|
367 | 53108fb5 | Kirill Batuzov | switch (op) {
|
368 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(add): |
369 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(mul): |
370 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(and): |
371 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(or): |
372 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(xor): |
373 | cb25c80a | Richard Henderson | CASE_OP_32_64(eqv): |
374 | cb25c80a | Richard Henderson | CASE_OP_32_64(nand): |
375 | cb25c80a | Richard Henderson | CASE_OP_32_64(nor): |
376 | 53108fb5 | Kirill Batuzov | if (temps[args[1]].state == TCG_TEMP_CONST) { |
377 | 53108fb5 | Kirill Batuzov | tmp = args[1];
|
378 | 53108fb5 | Kirill Batuzov | args[1] = args[2]; |
379 | 53108fb5 | Kirill Batuzov | args[2] = tmp;
|
380 | 53108fb5 | Kirill Batuzov | } |
381 | 53108fb5 | Kirill Batuzov | break;
|
382 | 65a7cce1 | Aurelien Jarno | CASE_OP_32_64(brcond): |
383 | 65a7cce1 | Aurelien Jarno | if (temps[args[0]].state == TCG_TEMP_CONST |
384 | 65a7cce1 | Aurelien Jarno | && temps[args[1]].state != TCG_TEMP_CONST) {
|
385 | 65a7cce1 | Aurelien Jarno | tmp = args[0];
|
386 | 65a7cce1 | Aurelien Jarno | args[0] = args[1]; |
387 | 65a7cce1 | Aurelien Jarno | args[1] = tmp;
|
388 | 65a7cce1 | Aurelien Jarno | args[2] = tcg_swap_cond(args[2]); |
389 | 65a7cce1 | Aurelien Jarno | } |
390 | 65a7cce1 | Aurelien Jarno | break;
|
391 | 65a7cce1 | Aurelien Jarno | CASE_OP_32_64(setcond): |
392 | 65a7cce1 | Aurelien Jarno | if (temps[args[1]].state == TCG_TEMP_CONST |
393 | 65a7cce1 | Aurelien Jarno | && temps[args[2]].state != TCG_TEMP_CONST) {
|
394 | 65a7cce1 | Aurelien Jarno | tmp = args[1];
|
395 | 65a7cce1 | Aurelien Jarno | args[1] = args[2]; |
396 | 65a7cce1 | Aurelien Jarno | args[2] = tmp;
|
397 | 65a7cce1 | Aurelien Jarno | args[3] = tcg_swap_cond(args[3]); |
398 | 65a7cce1 | Aurelien Jarno | } |
399 | 65a7cce1 | Aurelien Jarno | break;
|
400 | 53108fb5 | Kirill Batuzov | default:
|
401 | 53108fb5 | Kirill Batuzov | break;
|
402 | 53108fb5 | Kirill Batuzov | } |
403 | 53108fb5 | Kirill Batuzov | |
404 | 01ee5282 | Aurelien Jarno | /* Simplify expressions for "shift/rot r, 0, a => movi r, 0" */
|
405 | 01ee5282 | Aurelien Jarno | switch (op) {
|
406 | 01ee5282 | Aurelien Jarno | CASE_OP_32_64(shl): |
407 | 01ee5282 | Aurelien Jarno | CASE_OP_32_64(shr): |
408 | 01ee5282 | Aurelien Jarno | CASE_OP_32_64(sar): |
409 | 01ee5282 | Aurelien Jarno | CASE_OP_32_64(rotl): |
410 | 01ee5282 | Aurelien Jarno | CASE_OP_32_64(rotr): |
411 | 01ee5282 | Aurelien Jarno | if (temps[args[1]].state == TCG_TEMP_CONST |
412 | 01ee5282 | Aurelien Jarno | && temps[args[1]].val == 0) { |
413 | 01ee5282 | Aurelien Jarno | gen_opc_buf[op_index] = op_to_movi(op); |
414 | 01ee5282 | Aurelien Jarno | tcg_opt_gen_movi(gen_args, args[0], 0, nb_temps, nb_globals); |
415 | 01ee5282 | Aurelien Jarno | args += 3;
|
416 | 01ee5282 | Aurelien Jarno | gen_args += 2;
|
417 | 01ee5282 | Aurelien Jarno | continue;
|
418 | 01ee5282 | Aurelien Jarno | } |
419 | 01ee5282 | Aurelien Jarno | break;
|
420 | 01ee5282 | Aurelien Jarno | default:
|
421 | 01ee5282 | Aurelien Jarno | break;
|
422 | 01ee5282 | Aurelien Jarno | } |
423 | 01ee5282 | Aurelien Jarno | |
424 | 56e49438 | Aurelien Jarno | /* Simplify expression for "op r, a, 0 => mov r, a" cases */
|
425 | 53108fb5 | Kirill Batuzov | switch (op) {
|
426 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(add): |
427 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(sub): |
428 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(shl): |
429 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(shr): |
430 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(sar): |
431 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(rotl): |
432 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(rotr): |
433 | 38ee188b | Aurelien Jarno | CASE_OP_32_64(or): |
434 | 38ee188b | Aurelien Jarno | CASE_OP_32_64(xor): |
435 | 53108fb5 | Kirill Batuzov | if (temps[args[1]].state == TCG_TEMP_CONST) { |
436 | 53108fb5 | Kirill Batuzov | /* Proceed with possible constant folding. */
|
437 | 53108fb5 | Kirill Batuzov | break;
|
438 | 53108fb5 | Kirill Batuzov | } |
439 | 53108fb5 | Kirill Batuzov | if (temps[args[2]].state == TCG_TEMP_CONST |
440 | 53108fb5 | Kirill Batuzov | && temps[args[2]].val == 0) { |
441 | 53108fb5 | Kirill Batuzov | if ((temps[args[0]].state == TCG_TEMP_COPY |
442 | 53108fb5 | Kirill Batuzov | && temps[args[0]].val == args[1]) |
443 | 53108fb5 | Kirill Batuzov | || args[0] == args[1]) { |
444 | 53108fb5 | Kirill Batuzov | gen_opc_buf[op_index] = INDEX_op_nop; |
445 | 53108fb5 | Kirill Batuzov | } else {
|
446 | 53108fb5 | Kirill Batuzov | gen_opc_buf[op_index] = op_to_mov(op); |
447 | e31b0a7c | Blue Swirl | tcg_opt_gen_mov(s, gen_args, args[0], args[1], |
448 | 53108fb5 | Kirill Batuzov | nb_temps, nb_globals); |
449 | 53108fb5 | Kirill Batuzov | gen_args += 2;
|
450 | 53108fb5 | Kirill Batuzov | } |
451 | fedc0da2 | Aurelien Jarno | args += 3;
|
452 | 53108fb5 | Kirill Batuzov | continue;
|
453 | 53108fb5 | Kirill Batuzov | } |
454 | 53108fb5 | Kirill Batuzov | break;
|
455 | 56e49438 | Aurelien Jarno | default:
|
456 | 56e49438 | Aurelien Jarno | break;
|
457 | 56e49438 | Aurelien Jarno | } |
458 | 56e49438 | Aurelien Jarno | |
459 | 56e49438 | Aurelien Jarno | /* Simplify expression for "op r, a, 0 => movi r, 0" cases */
|
460 | 56e49438 | Aurelien Jarno | switch (op) {
|
461 | 61251c0c | Aurelien Jarno | CASE_OP_32_64(and): |
462 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(mul): |
463 | 53108fb5 | Kirill Batuzov | if ((temps[args[2]].state == TCG_TEMP_CONST |
464 | 53108fb5 | Kirill Batuzov | && temps[args[2]].val == 0)) { |
465 | 53108fb5 | Kirill Batuzov | gen_opc_buf[op_index] = op_to_movi(op); |
466 | 53108fb5 | Kirill Batuzov | tcg_opt_gen_movi(gen_args, args[0], 0, nb_temps, nb_globals); |
467 | 53108fb5 | Kirill Batuzov | args += 3;
|
468 | 53108fb5 | Kirill Batuzov | gen_args += 2;
|
469 | 53108fb5 | Kirill Batuzov | continue;
|
470 | 53108fb5 | Kirill Batuzov | } |
471 | 53108fb5 | Kirill Batuzov | break;
|
472 | 56e49438 | Aurelien Jarno | default:
|
473 | 56e49438 | Aurelien Jarno | break;
|
474 | 56e49438 | Aurelien Jarno | } |
475 | 56e49438 | Aurelien Jarno | |
476 | 56e49438 | Aurelien Jarno | /* Simplify expression for "op r, a, a => mov r, a" cases */
|
477 | 56e49438 | Aurelien Jarno | switch (op) {
|
478 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(or): |
479 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(and): |
480 | 9a81090b | Kirill Batuzov | if (args[1] == args[2]) { |
481 | 9a81090b | Kirill Batuzov | if (args[1] == args[0]) { |
482 | 9a81090b | Kirill Batuzov | gen_opc_buf[op_index] = INDEX_op_nop; |
483 | 9a81090b | Kirill Batuzov | } else {
|
484 | 9a81090b | Kirill Batuzov | gen_opc_buf[op_index] = op_to_mov(op); |
485 | e31b0a7c | Blue Swirl | tcg_opt_gen_mov(s, gen_args, args[0], args[1], nb_temps, |
486 | 9a81090b | Kirill Batuzov | nb_globals); |
487 | 9a81090b | Kirill Batuzov | gen_args += 2;
|
488 | 9a81090b | Kirill Batuzov | } |
489 | fedc0da2 | Aurelien Jarno | args += 3;
|
490 | 9a81090b | Kirill Batuzov | continue;
|
491 | 9a81090b | Kirill Batuzov | } |
492 | 9a81090b | Kirill Batuzov | break;
|
493 | fe0de7aa | Blue Swirl | default:
|
494 | fe0de7aa | Blue Swirl | break;
|
495 | 53108fb5 | Kirill Batuzov | } |
496 | 53108fb5 | Kirill Batuzov | |
497 | 22613af4 | Kirill Batuzov | /* Propagate constants through copy operations and do constant
|
498 | 22613af4 | Kirill Batuzov | folding. Constants will be substituted to arguments by register
|
499 | 22613af4 | Kirill Batuzov | allocator where needed and possible. Also detect copies. */
|
500 | 8f2e8c07 | Kirill Batuzov | switch (op) {
|
501 | 22613af4 | Kirill Batuzov | CASE_OP_32_64(mov): |
502 | 22613af4 | Kirill Batuzov | if ((temps[args[1]].state == TCG_TEMP_COPY |
503 | 22613af4 | Kirill Batuzov | && temps[args[1]].val == args[0]) |
504 | 22613af4 | Kirill Batuzov | || args[0] == args[1]) { |
505 | 22613af4 | Kirill Batuzov | args += 2;
|
506 | 22613af4 | Kirill Batuzov | gen_opc_buf[op_index] = INDEX_op_nop; |
507 | 22613af4 | Kirill Batuzov | break;
|
508 | 22613af4 | Kirill Batuzov | } |
509 | 22613af4 | Kirill Batuzov | if (temps[args[1]].state != TCG_TEMP_CONST) { |
510 | e31b0a7c | Blue Swirl | tcg_opt_gen_mov(s, gen_args, args[0], args[1], |
511 | 22613af4 | Kirill Batuzov | nb_temps, nb_globals); |
512 | 22613af4 | Kirill Batuzov | gen_args += 2;
|
513 | 22613af4 | Kirill Batuzov | args += 2;
|
514 | 22613af4 | Kirill Batuzov | break;
|
515 | 22613af4 | Kirill Batuzov | } |
516 | 22613af4 | Kirill Batuzov | /* Source argument is constant. Rewrite the operation and
|
517 | 22613af4 | Kirill Batuzov | let movi case handle it. */
|
518 | 22613af4 | Kirill Batuzov | op = op_to_movi(op); |
519 | 22613af4 | Kirill Batuzov | gen_opc_buf[op_index] = op; |
520 | 22613af4 | Kirill Batuzov | args[1] = temps[args[1]].val; |
521 | 22613af4 | Kirill Batuzov | /* fallthrough */
|
522 | 22613af4 | Kirill Batuzov | CASE_OP_32_64(movi): |
523 | 22613af4 | Kirill Batuzov | tcg_opt_gen_movi(gen_args, args[0], args[1], nb_temps, nb_globals); |
524 | 22613af4 | Kirill Batuzov | gen_args += 2;
|
525 | 22613af4 | Kirill Batuzov | args += 2;
|
526 | 22613af4 | Kirill Batuzov | break;
|
527 | a640f031 | Kirill Batuzov | CASE_OP_32_64(not): |
528 | cb25c80a | Richard Henderson | CASE_OP_32_64(neg): |
529 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext8s): |
530 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext8u): |
531 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext16s): |
532 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(ext16u): |
533 | a640f031 | Kirill Batuzov | case INDEX_op_ext32s_i64:
|
534 | a640f031 | Kirill Batuzov | case INDEX_op_ext32u_i64:
|
535 | a640f031 | Kirill Batuzov | if (temps[args[1]].state == TCG_TEMP_CONST) { |
536 | a640f031 | Kirill Batuzov | gen_opc_buf[op_index] = op_to_movi(op); |
537 | a640f031 | Kirill Batuzov | tmp = do_constant_folding(op, temps[args[1]].val, 0); |
538 | a640f031 | Kirill Batuzov | tcg_opt_gen_movi(gen_args, args[0], tmp, nb_temps, nb_globals);
|
539 | a640f031 | Kirill Batuzov | } else {
|
540 | a640f031 | Kirill Batuzov | reset_temp(args[0], nb_temps, nb_globals);
|
541 | a640f031 | Kirill Batuzov | gen_args[0] = args[0]; |
542 | a640f031 | Kirill Batuzov | gen_args[1] = args[1]; |
543 | a640f031 | Kirill Batuzov | } |
544 | fedc0da2 | Aurelien Jarno | gen_args += 2;
|
545 | fedc0da2 | Aurelien Jarno | args += 2;
|
546 | fedc0da2 | Aurelien Jarno | break;
|
547 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(add): |
548 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(sub): |
549 | 53108fb5 | Kirill Batuzov | CASE_OP_32_64(mul): |
550 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(or): |
551 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(and): |
552 | 9a81090b | Kirill Batuzov | CASE_OP_32_64(xor): |
553 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(shl): |
554 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(shr): |
555 | 55c0975c | Kirill Batuzov | CASE_OP_32_64(sar): |
556 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(rotl): |
557 | 25c4d9cc | Richard Henderson | CASE_OP_32_64(rotr): |
558 | cb25c80a | Richard Henderson | CASE_OP_32_64(andc): |
559 | cb25c80a | Richard Henderson | CASE_OP_32_64(orc): |
560 | cb25c80a | Richard Henderson | CASE_OP_32_64(eqv): |
561 | cb25c80a | Richard Henderson | CASE_OP_32_64(nand): |
562 | cb25c80a | Richard Henderson | CASE_OP_32_64(nor): |
563 | 53108fb5 | Kirill Batuzov | if (temps[args[1]].state == TCG_TEMP_CONST |
564 | 53108fb5 | Kirill Batuzov | && temps[args[2]].state == TCG_TEMP_CONST) {
|
565 | 53108fb5 | Kirill Batuzov | gen_opc_buf[op_index] = op_to_movi(op); |
566 | 53108fb5 | Kirill Batuzov | tmp = do_constant_folding(op, temps[args[1]].val,
|
567 | 53108fb5 | Kirill Batuzov | temps[args[2]].val);
|
568 | 53108fb5 | Kirill Batuzov | tcg_opt_gen_movi(gen_args, args[0], tmp, nb_temps, nb_globals);
|
569 | 53108fb5 | Kirill Batuzov | gen_args += 2;
|
570 | 53108fb5 | Kirill Batuzov | } else {
|
571 | 53108fb5 | Kirill Batuzov | reset_temp(args[0], nb_temps, nb_globals);
|
572 | 53108fb5 | Kirill Batuzov | gen_args[0] = args[0]; |
573 | 53108fb5 | Kirill Batuzov | gen_args[1] = args[1]; |
574 | 53108fb5 | Kirill Batuzov | gen_args[2] = args[2]; |
575 | 53108fb5 | Kirill Batuzov | gen_args += 3;
|
576 | 53108fb5 | Kirill Batuzov | } |
577 | fedc0da2 | Aurelien Jarno | args += 3;
|
578 | fedc0da2 | Aurelien Jarno | break;
|
579 | f8dd19e5 | Aurelien Jarno | CASE_OP_32_64(setcond): |
580 | f8dd19e5 | Aurelien Jarno | if (temps[args[1]].state == TCG_TEMP_CONST |
581 | f8dd19e5 | Aurelien Jarno | && temps[args[2]].state == TCG_TEMP_CONST) {
|
582 | f8dd19e5 | Aurelien Jarno | gen_opc_buf[op_index] = op_to_movi(op); |
583 | f8dd19e5 | Aurelien Jarno | tmp = do_constant_folding_cond(op, temps[args[1]].val,
|
584 | f8dd19e5 | Aurelien Jarno | temps[args[2]].val, args[3]); |
585 | f8dd19e5 | Aurelien Jarno | tcg_opt_gen_movi(gen_args, args[0], tmp, nb_temps, nb_globals);
|
586 | f8dd19e5 | Aurelien Jarno | gen_args += 2;
|
587 | f8dd19e5 | Aurelien Jarno | } else {
|
588 | f8dd19e5 | Aurelien Jarno | reset_temp(args[0], nb_temps, nb_globals);
|
589 | f8dd19e5 | Aurelien Jarno | gen_args[0] = args[0]; |
590 | f8dd19e5 | Aurelien Jarno | gen_args[1] = args[1]; |
591 | f8dd19e5 | Aurelien Jarno | gen_args[2] = args[2]; |
592 | f8dd19e5 | Aurelien Jarno | gen_args[3] = args[3]; |
593 | f8dd19e5 | Aurelien Jarno | gen_args += 4;
|
594 | f8dd19e5 | Aurelien Jarno | } |
595 | fedc0da2 | Aurelien Jarno | args += 4;
|
596 | fedc0da2 | Aurelien Jarno | break;
|
597 | fbeaa26c | Aurelien Jarno | CASE_OP_32_64(brcond): |
598 | fbeaa26c | Aurelien Jarno | if (temps[args[0]].state == TCG_TEMP_CONST |
599 | fbeaa26c | Aurelien Jarno | && temps[args[1]].state == TCG_TEMP_CONST) {
|
600 | fbeaa26c | Aurelien Jarno | if (do_constant_folding_cond(op, temps[args[0]].val, |
601 | fbeaa26c | Aurelien Jarno | temps[args[1]].val, args[2])) { |
602 | fbeaa26c | Aurelien Jarno | memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); |
603 | fbeaa26c | Aurelien Jarno | gen_opc_buf[op_index] = INDEX_op_br; |
604 | fbeaa26c | Aurelien Jarno | gen_args[0] = args[3]; |
605 | fbeaa26c | Aurelien Jarno | gen_args += 1;
|
606 | fbeaa26c | Aurelien Jarno | } else {
|
607 | fbeaa26c | Aurelien Jarno | gen_opc_buf[op_index] = INDEX_op_nop; |
608 | fbeaa26c | Aurelien Jarno | } |
609 | fbeaa26c | Aurelien Jarno | } else {
|
610 | fbeaa26c | Aurelien Jarno | memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); |
611 | fbeaa26c | Aurelien Jarno | reset_temp(args[0], nb_temps, nb_globals);
|
612 | fbeaa26c | Aurelien Jarno | gen_args[0] = args[0]; |
613 | fbeaa26c | Aurelien Jarno | gen_args[1] = args[1]; |
614 | fbeaa26c | Aurelien Jarno | gen_args[2] = args[2]; |
615 | fbeaa26c | Aurelien Jarno | gen_args[3] = args[3]; |
616 | fbeaa26c | Aurelien Jarno | gen_args += 4;
|
617 | fbeaa26c | Aurelien Jarno | } |
618 | fedc0da2 | Aurelien Jarno | args += 4;
|
619 | fedc0da2 | Aurelien Jarno | break;
|
620 | 8f2e8c07 | Kirill Batuzov | case INDEX_op_call:
|
621 | 22613af4 | Kirill Batuzov | nb_call_args = (args[0] >> 16) + (args[0] & 0xffff); |
622 | 22613af4 | Kirill Batuzov | if (!(args[nb_call_args + 1] & (TCG_CALL_CONST | TCG_CALL_PURE))) { |
623 | 22613af4 | Kirill Batuzov | for (i = 0; i < nb_globals; i++) { |
624 | 22613af4 | Kirill Batuzov | reset_temp(i, nb_temps, nb_globals); |
625 | 22613af4 | Kirill Batuzov | } |
626 | 22613af4 | Kirill Batuzov | } |
627 | 22613af4 | Kirill Batuzov | for (i = 0; i < (args[0] >> 16); i++) { |
628 | 22613af4 | Kirill Batuzov | reset_temp(args[i + 1], nb_temps, nb_globals);
|
629 | 22613af4 | Kirill Batuzov | } |
630 | 22613af4 | Kirill Batuzov | i = nb_call_args + 3;
|
631 | 8f2e8c07 | Kirill Batuzov | while (i) {
|
632 | 8f2e8c07 | Kirill Batuzov | *gen_args = *args; |
633 | 8f2e8c07 | Kirill Batuzov | args++; |
634 | 8f2e8c07 | Kirill Batuzov | gen_args++; |
635 | 8f2e8c07 | Kirill Batuzov | i--; |
636 | 8f2e8c07 | Kirill Batuzov | } |
637 | 8f2e8c07 | Kirill Batuzov | break;
|
638 | 8f2e8c07 | Kirill Batuzov | case INDEX_op_set_label:
|
639 | 8f2e8c07 | Kirill Batuzov | case INDEX_op_jmp:
|
640 | 8f2e8c07 | Kirill Batuzov | case INDEX_op_br:
|
641 | 22613af4 | Kirill Batuzov | memset(temps, 0, nb_temps * sizeof(struct tcg_temp_info)); |
642 | 8f2e8c07 | Kirill Batuzov | for (i = 0; i < def->nb_args; i++) { |
643 | 8f2e8c07 | Kirill Batuzov | *gen_args = *args; |
644 | 8f2e8c07 | Kirill Batuzov | args++; |
645 | 8f2e8c07 | Kirill Batuzov | gen_args++; |
646 | 8f2e8c07 | Kirill Batuzov | } |
647 | 8f2e8c07 | Kirill Batuzov | break;
|
648 | 8f2e8c07 | Kirill Batuzov | default:
|
649 | 22613af4 | Kirill Batuzov | /* Default case: we do know nothing about operation so no
|
650 | 22613af4 | Kirill Batuzov | propagation is done. We only trash output args. */
|
651 | 22613af4 | Kirill Batuzov | for (i = 0; i < def->nb_oargs; i++) { |
652 | 22613af4 | Kirill Batuzov | reset_temp(args[i], nb_temps, nb_globals); |
653 | 22613af4 | Kirill Batuzov | } |
654 | 8f2e8c07 | Kirill Batuzov | for (i = 0; i < def->nb_args; i++) { |
655 | 8f2e8c07 | Kirill Batuzov | gen_args[i] = args[i]; |
656 | 8f2e8c07 | Kirill Batuzov | } |
657 | 8f2e8c07 | Kirill Batuzov | args += def->nb_args; |
658 | 8f2e8c07 | Kirill Batuzov | gen_args += def->nb_args; |
659 | 8f2e8c07 | Kirill Batuzov | break;
|
660 | 8f2e8c07 | Kirill Batuzov | } |
661 | 8f2e8c07 | Kirill Batuzov | } |
662 | 8f2e8c07 | Kirill Batuzov | |
663 | 8f2e8c07 | Kirill Batuzov | return gen_args;
|
664 | 8f2e8c07 | Kirill Batuzov | } |
665 | 8f2e8c07 | Kirill Batuzov | |
666 | 8f2e8c07 | Kirill Batuzov | TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, |
667 | 8f2e8c07 | Kirill Batuzov | TCGArg *args, TCGOpDef *tcg_op_defs) |
668 | 8f2e8c07 | Kirill Batuzov | { |
669 | 8f2e8c07 | Kirill Batuzov | TCGArg *res; |
670 | 8f2e8c07 | Kirill Batuzov | res = tcg_constant_folding(s, tcg_opc_ptr, args, tcg_op_defs); |
671 | 8f2e8c07 | Kirill Batuzov | return res;
|
672 | 8f2e8c07 | Kirill Batuzov | } |