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21
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1 #include "stdio.h"
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2
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119
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3 extern int atoi (const char *);
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4
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21
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5 static int loop;
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6
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7 #if 1 // def __micro_c__
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8 #define CC_ONLY 0
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9 #else
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10 #define CC_ONLY 1
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11 #endif
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12
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13 /* classical function call case (0) */
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119
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14 int g0(int);
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15 int h0(int);
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21
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16
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119
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17 int
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21
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18 f0(int i) {
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19 int k,j;
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20 k = 3+i;
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21 j = g0(i+3);
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22 return k+4+j;
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23 }
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24
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119
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25 int
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21
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26 g0(int i) {
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27 return h0(i+4)+i;
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28 }
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29
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119
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30 int
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21
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31 h0(int i) {
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32 return i+4;
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33 }
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34
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35 #if !CC_ONLY
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36
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37 /* straight conversion case (1) */
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38
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119
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39 typedef void *stack;
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21
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40
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41 struct cont_interface { // General Return Continuation
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42 __code (*ret)(int, void *);
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43 };
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44
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119
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45 #ifndef __llvm__
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46 __code f_g0(int i,int k,stack sp);
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47 __code f_g1(int j,stack sp);
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48 __code g(int i,stack sp);
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49 __code h(int i,stack sp);
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50 __code f2(int i,char *sp);
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51 __code g2(int i,int k,int j,char *sp);
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52 __code h2(int i,int k,char *sp);
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53 __code main_return2(int i,stack sp);
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54 __code g2_1(int k,int i,stack *sp);
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55 __code h2_11(int i,int k,stack *sp);
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56 #endif
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57
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21
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58 __code f(int i,stack sp) {
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59 int k,j;
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60 k = 3+i;
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61 goto f_g0(i,k,sp);
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62 }
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63
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64 struct f_g0_interface { // Specialized Return Continuation
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65 __code (*ret)(int, void *);
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66 int i_,k_,j_;
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67 };
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68
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69 __code f_g1(int j,stack sp);
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70
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71 __code f_g0(int i,int k,stack sp) { // Caller
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72 struct f_g0_interface *c =
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73 (struct f_g0_interface *)(sp -= sizeof(struct f_g0_interface));
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74
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75 c->ret = f_g1;
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76 c->k_ = k;
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77 c->i_ = i;
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78
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79 goto g(i+3,sp);
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80 }
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81
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82 __code f_g1(int j,stack sp) { // Continuation
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83 struct f_g0_interface *c = (struct f_g0_interface *)sp;
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84 int k = c->k_;
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85 sp+=sizeof(struct f_g0_interface);
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86 c = (struct f_g0_interface *)sp;
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87 goto (c->ret)(k+4+j,sp);
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88 }
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89
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90 __code g_h1(int j,stack sp);
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91
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92 __code g(int i,stack sp) { // Caller
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93 struct f_g0_interface *c =
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94 (struct f_g0_interface *)(sp -= sizeof(struct f_g0_interface));
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95
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96 c->ret = g_h1;
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97 c->i_ = i;
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98
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99 goto h(i+3,sp);
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100 }
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101
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102 __code g_h1(int j,stack sp) { // Continuation
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103 struct f_g0_interface *c = (struct f_g0_interface *)sp;
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104 int i = c->i_;
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105 sp+=sizeof(struct f_g0_interface);
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106 c = (struct f_g0_interface *)sp;
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107 goto (c->ret)(j+i,sp);
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108 }
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109
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110 __code h(int i,stack sp) {
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111 struct f_g0_interface *c = (struct f_g0_interface *)sp;
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112 goto (c->ret)(i+4,sp);
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113 }
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114
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115 struct main_continuation { // General Return Continuation
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116 __code (*ret)();
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117 __code (*main_ret)();
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118 void *env;
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119 };
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120
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121 __code main_return(int i,stack sp) {
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122 if (loop-->0)
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123 goto f(233,sp);
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124 printf("#0103:%d\n",i);
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125 goto (( (struct main_continuation *)sp)->main_ret)(0,
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126 ((struct main_continuation *)sp)->env);
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127 }
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128
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129 /* little optimzation without stack continuation (2) */
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130
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131 __code f2(int i,char *sp) {
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132 int k,j;
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133 k = 3+i;
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134 goto g2(i,k,i+3,sp);
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135 }
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136
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137 __code g2(int i,int k,int j,char *sp) {
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138 j = j+4;
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139 goto h2(i,k+4+j,sp);
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140 }
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141
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142 __code h2_1(int i,int k,int j,char *sp) {
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143 goto main_return2(i+j,sp);
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144 }
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145
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146 __code h2(int i,int k,char *sp) {
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147 goto h2_1(i,k,i+4,sp);
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148 }
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149
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150 __code main_return2(int i,stack sp) {
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151 if (loop-->0)
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152 goto f2(233,sp);
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153 printf("#0132:%d\n",i);
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154 goto (( (struct main_continuation *)sp)->main_ret)(0,
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155 ((struct main_continuation *)sp)->env);
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156 }
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157
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158 /* little optimizaed case (3) */
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159
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119
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160 __code f2_1(int i,stack *sp) {
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21
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161 int k,j;
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162 k = 3+i;
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163 goto g2_1(k,i+3,sp);
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164 }
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165
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119
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166 __code g2_1(int k,int i,stack *sp) {
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21
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167 goto h2_11(k,i+4,sp);
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168 }
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169
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119
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170 __code f2_0_1(int k,int j,stack *sp);
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171 __code h2_1_1(int i,int k,int j,stack *sp) {
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21
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172 goto f2_0_1(k,i+j,sp);
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173 }
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174
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119
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175 __code h2_11(int i,int k,stack *sp) {
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21
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176 goto h2_1_1(i,k,i+4,sp);
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177 }
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178
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119
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179 __code f2_0_1(int k,int j,stack *sp) {
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21
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180 goto (( (struct cont_interface *)sp)->ret)(k+4+j,sp);
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181 }
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182
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183 __code main_return2_1(int i,stack sp) {
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184 if (loop-->0)
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185 goto f2_1(233,sp);
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186 printf("#0165:%d\n",i);
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187 goto (( (struct main_continuation *)sp)->main_ret)(0,
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188 ((struct main_continuation *)sp)->env);
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189 }
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190
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191 #define STACK_SIZE 2048
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192 char main_stack[STACK_SIZE];
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193 #define stack_last (main_stack+STACK_SIZE)
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194
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195 #endif
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196
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197 #define LOOP_COUNT 10000000
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198
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119
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199 int
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21
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200 main(int ac,char *av[])
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201 {
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202 #if !CC_ONLY
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203 struct main_continuation *cont;
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204 stack sp = stack_last;
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205 #endif
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206 int sw;
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207 int j;
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208 if (ac==2) sw = atoi(av[1]);
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209 else sw=3;
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210
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211 if (sw==0) {
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212 for(loop=0;loop<LOOP_COUNT;loop++) {
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213 j = f0(233);
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214 }
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215 printf("#0193:%d\n",j);
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216 #if !CC_ONLY
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217 } else if (sw==1) {
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218 loop = LOOP_COUNT;
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219 sp -= sizeof(*cont);
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220 cont = (struct main_continuation *)sp;
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221 cont->ret = main_return;
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222 cont->main_ret = _CbC_return;
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223 cont->env = _CbC_environment;
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224 goto f(233,sp);
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225 } else if (sw==2) {
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226 loop = LOOP_COUNT;
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227 sp -= sizeof(*cont);
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228 cont = (struct main_continuation *)sp;
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229 cont->ret = main_return2;
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230 cont->main_ret = _CbC_return;
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231 cont->env = _CbC_environment;
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232 goto f2(233,sp);
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233 } else if (sw==3) {
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234 loop = LOOP_COUNT;
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235 sp -= sizeof(*cont);
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236 cont = (struct main_continuation *)sp;
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237 cont->ret = main_return2_1;
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238 cont->main_ret = _CbC_return;
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239 cont->env = _CbC_environment;
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240 goto f2_1(233,sp);
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241 #endif
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242 }
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243 return 0;
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244 }
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245
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246 /* end */
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