annotate gen/asmstmt.cpp @ 300:7b1040c76dd2 trunk

[svn r321] Fix bug in argument remapping functions.
author ChristianK
date Tue, 24 Jun 2008 22:27:55 +0200
parents df8a7b8d5929
children f42a1090e895
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1 // Taken from GDC source tree, licence unclear?
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2 //
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3 // Taken from an earlier version of DMD -- why is it missing from 0.79?
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4
220
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5 #include "gen/llvm.h"
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6 #include "llvm/InlineAsm.h"
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7
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8 //#include "d-gcc-includes.h"
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9 //#include "total.h"
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10 #include "dmd/statement.h"
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11 #include "dmd/scope.h"
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12 #include "dmd/declaration.h"
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13 #include "dmd/dsymbol.h"
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14
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15 #include <cassert>
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16 #include <deque>
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17 #include <iostream>
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18 #include <sstream>
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19 #include <cstring>
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20
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21 //#include "d-lang.h"
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22 //#include "d-codegen.h"
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23
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24 #include "gen/irstate.h"
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25 #include "gen/dvalue.h"
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26 #include "gen/tollvm.h"
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27 #include "gen/logger.h"
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28 #include "gen/todebug.h"
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29
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30 typedef enum {
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31 Arg_Integer,
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32 Arg_Pointer,
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33 Arg_Memory,
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34 Arg_FrameRelative,
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35 Arg_LocalSize,
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36 Arg_Dollar
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37 } AsmArgType;
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38
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39 typedef enum {
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40 Mode_Input,
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41 Mode_Output,
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42 Mode_Update
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43 } AsmArgMode;
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44
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45 struct AsmArg {
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46 AsmArgType type;
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47 Expression * expr;
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48 AsmArgMode mode;
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49 AsmArg(AsmArgType type, Expression * expr, AsmArgMode mode) {
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50 this->type = type;
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51 this->expr = expr;
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52 this->mode = mode;
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53 }
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54 };
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55
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56 struct AsmCode {
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57 char * insnTemplate;
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58 unsigned insnTemplateLen;
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59 Array args; // of AsmArg
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60 unsigned moreRegs;
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61 unsigned dollarLabel;
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62 int clobbersMemory;
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63 AsmCode() {
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64 insnTemplate = NULL;
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65 insnTemplateLen = 0;
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66 moreRegs = 0;
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67 dollarLabel = 0;
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68 clobbersMemory = 0;
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69 }
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70 };
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71
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72 AsmStatement::AsmStatement(Loc loc, Token *tokens) :
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73 Statement(loc)
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74 {
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75 this->tokens = tokens; // Do I need to copy these?
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76 asmcode = 0;
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77 asmalign = 0;
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78 refparam = 0;
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79 naked = 0;
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80 regs = 0;
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81
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82 isBranchToLabel = NULL;
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83 }
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84
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85 Statement *AsmStatement::syntaxCopy()
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86 {
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87 // copy tokens? copy 'code'?
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88 AsmStatement * a_s = new AsmStatement(loc,tokens);
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89 a_s->asmcode = asmcode;
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90 a_s->refparam = refparam;
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91 a_s->naked = naked;
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92 a_s->regs = a_s->regs;
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93 return a_s;
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94 }
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95
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96 void AsmStatement::toCBuffer(OutBuffer *buf, HdrGenState *hgs)
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97 {
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98 bool sep = 0, nsep = 0;
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99 buf->writestring("asm { ");
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100
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101 for (Token * t = tokens; t; t = t->next) {
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102 switch (t->value) {
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103 case TOKlparen:
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104 case TOKrparen:
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105 case TOKlbracket:
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106 case TOKrbracket:
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107 case TOKcolon:
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108 case TOKsemicolon:
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109 case TOKcomma:
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110 case TOKstring:
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111 case TOKcharv:
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112 case TOKwcharv:
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113 case TOKdcharv:
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114 nsep = 0;
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115 break;
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116 default:
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117 nsep = 1;
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118 }
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119 if (sep + nsep == 2)
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120 buf->writeByte(' ');
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121 sep = nsep;
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122 buf->writestring(t->toChars());
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123 }
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124 buf->writestring("; }");
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125 buf->writenl();
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126 }
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127
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128 int AsmStatement::comeFrom()
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129 {
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130 return FALSE;
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131 }
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132
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133 /* GCC does not support jumps from asm statements. When optimization
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134 is turned on, labels referenced only from asm statements will not
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135 be output at the correct location. There are ways around this:
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136
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137 1) Reference the label with a reachable goto statement
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138 2) Have reachable computed goto in the function
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139 3) Hack cfgbuild.c to act as though there is a computed goto.
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140
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141 These are all pretty bad, but if would be nice to be able to tell
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142 GCC not to optimize in this case (even on per label/block basis).
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143
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144 The current solution is output our own private labels (as asm
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145 statements) along with the "real" label. If the label happens to
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146 be referred to by a goto statement, the "real" label will also be
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147 output in the correct location.
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148
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149 Also had to add 'asmLabelNum' to LabelDsymbol to indicate it needs
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150 special processing.
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151
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152 (junk) d-lang.cc:916:case LABEL_DECL: // C doesn't do this. D needs this for referencing labels in inline assembler since there may be not goto referencing it.
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153
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154 */
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155
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156 static unsigned d_priv_asm_label_serial = 0;
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157
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158 // may need to make this target-specific
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159 static void d_format_priv_asm_label(char * buf, unsigned n)
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160 {
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161 //ASM_GENERATE_INTERNAL_LABEL(buf, "LDASM", n);//inserts a '*' for use with assemble_name
234
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162 assert(0);
219
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163 sprintf(buf, ".LDASM%u", n);
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164 }
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165
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166 void
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167 d_expand_priv_asm_label(IRState * irs, unsigned n)
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168 {
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169 /* char buf[64];
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170 d_format_priv_asm_label(buf, n);
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171 strcat(buf, ":");
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172 tree insnt = build_string(strlen(buf), buf);
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173 #if D_GCC_VER < 40
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174 expand_asm(insnt, 1);
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175 #else
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176 tree t = d_build_asm_stmt(insnt, NULL_TREE, NULL_TREE, NULL_TREE);
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177 ASM_VOLATILE_P( t ) = 1;
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178 ASM_INPUT_P( t) = 1; // what is this doing?
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179 irs->addExp(t);
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180 #endif*/
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181 }
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182
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183
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184 // StringExp::toIR usually adds a NULL. We don't want that...
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185
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186 /*static tree
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187 naturalString(Expression * e)
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188 {
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189 // don't fail, just an error?
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190 assert(e->op == TOKstring);
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191 StringExp * s = (StringExp *) e;
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192 assert(s->sz == 1);
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193 return build_string(s->len, (char *) s->string);
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194 }*/
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195
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196
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197 #include "d-asm-i386.h"
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198
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199 bool d_have_inline_asm() { return true; }
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200
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201 Statement *AsmStatement::semantic(Scope *sc)
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202 {
237
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203 bool err = false;
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204 if (global.params.cpu != ARCHx86)
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205 {
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206 error("inline asm is not supported for the \"%s\" architecture", global.params.llvmArch);
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207 err = true;
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208 }
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209 if (!global.params.useInlineAsm)
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210 {
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211 error("inline asm is not allowed when the -noasm switch is used");
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212 err = true;
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213 }
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214 if (err)
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215 fatal();
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216
219
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217 sc->func->inlineAsm = 1;
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218 sc->func->inlineStatus = ILSno; // %% not sure
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219 // %% need to set DECL_UNINLINABLE too?
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220 sc->func->hasReturnExp = 1; // %% DMD does this, apparently...
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221
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222 // empty statement -- still do the above things because they might be expected?
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223 if (! tokens)
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224 return this;
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225
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226 AsmProcessor ap(sc, this);
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227 ap.run();
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228 return this;
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229 }
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230
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231 void
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232 AsmStatement::toIR(IRState * irs)
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233 {
220
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234 Logger::println("AsmStatement::toIR(): %s", loc.toChars());
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235 LOG_SCOPE;
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236
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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237 // get asm block
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238 IRAsmBlock* asmblock = irs->asmBlock;
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239 assert(asmblock);
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240
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241 // debug info
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242 if (global.params.symdebug)
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243 DtoDwarfStopPoint(loc.linnum);
219
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244
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245 if (! asmcode)
233
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246 return;
219
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247
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248 static std::string i_cns = "i";
231
61aa721a6b7f [svn r247] fixed accessing global symbols from inline asm.
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249 static std::string p_cns = "i";
222
251548c1035d [svn r238] use *m for memory input constraints and pass in their address
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250 static std::string m_cns = "*m";
221
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251 static std::string mw_cns = "=*m";
223
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252 static std::string mrw_cns = "+*m";
219
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253 static std::string memory_name = "memory";
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254
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255 AsmCode * code = (AsmCode *) asmcode;
229
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256 std::deque<LLValue*> input_values;
219
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257 std::deque<std::string> input_constraints;
229
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258 std::deque<LLValue*> output_values;
219
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259 std::deque<std::string> output_constraints;
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260 std::deque<std::string> clobbers;
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261
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262 // FIXME
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263 #define HOST_WIDE_INT long
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264 HOST_WIDE_INT var_frame_offset; // "frame_offset" is a macro
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265 bool clobbers_mem = code->clobbersMemory;
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266 int input_idx = 0;
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267 int n_outputs = 0;
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268 int arg_map[10];
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269
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270 assert(code->args.dim <= 10);
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271
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272 for (unsigned i = 0; i < code->args.dim; i++) {
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273 AsmArg * arg = (AsmArg *) code->args.data[i];
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274
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275 bool is_input = true;
229
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276 LLValue* arg_val = 0;
219
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277 std::string cns;
220
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278
219
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279 switch (arg->type) {
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280 case Arg_Integer:
229
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281 arg_val = arg->expr->toElem(irs)->getRVal();
219
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282 do_integer:
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283 cns = i_cns;
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284 break;
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285 case Arg_Pointer:
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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286 assert(arg->expr->op == TOKvar);
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287 arg_val = arg->expr->toElem(irs)->getRVal();
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288 cns = p_cns;
220
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289
219
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290 break;
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291 case Arg_Memory:
229
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292 arg_val = arg->expr->toElem(irs)->getRVal();
220
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293
219
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294 switch (arg->mode) {
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295 case Mode_Input: cns = m_cns; break;
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296 case Mode_Output: cns = mw_cns; is_input = false; break;
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297 case Mode_Update: cns = mrw_cns; is_input = false; break;
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298 default: assert(0); break;
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299 }
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300 break;
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301 case Arg_FrameRelative:
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302 // FIXME
220
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303 std::cout << "asm fixme Arg_FrameRelative" << std::endl;
229
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304 assert(0);
219
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305 /* if (arg->expr->op == TOKvar)
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306 arg_val = ((VarExp *) arg->expr)->var->toSymbol()->Stree;
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307 else
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308 assert(0);*/
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309 if ( getFrameRelativeValue(arg_val, & var_frame_offset) ) {
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310 // arg_val = irs->integerConstant(var_frame_offset);
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311 cns = i_cns;
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312 } else {
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313 this->error("%s", "argument not frame relative");
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314 return;
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315 }
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316 if (arg->mode != Mode_Input)
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317 clobbers_mem = true;
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318 break;
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319 case Arg_LocalSize:
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320 // FIXME
220
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
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321 std::cout << "asm fixme Arg_LocalSize" << std::endl;
229
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322 assert(0);
219
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323 /* var_frame_offset = cfun->x_frame_offset;
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324 if (var_frame_offset < 0)
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325 var_frame_offset = - var_frame_offset;
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326 arg_val = irs->integerConstant( var_frame_offset );*/
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327 goto do_integer;
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328 default:
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329 assert(0);
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330 }
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331
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332 if (is_input) {
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333 arg_map[i] = --input_idx;
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334 //inputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val);
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335 input_values.push_back(arg_val);
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336 input_constraints.push_back(cns);
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337 } else {
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338 arg_map[i] = n_outputs++;
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339 //outputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val);
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340 output_values.push_back(arg_val);
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341 output_constraints.push_back(cns);
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342 }
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343 }
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344
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345 // Telling GCC that callee-saved registers are clobbered makes it preserve
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346 // those registers. This changes the stack from what a naked function
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347 // expects.
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348
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349 // FIXME
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350 // if (! irs->func->naked) {
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351 for (int i = 0; i < 32; i++) {
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352 if (regs & (1 << i)) {
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353 //clobbers.cons(NULL_TREE, regInfo[i].gccName);
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354 clobbers.push_back(regInfo[i].gccName);
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355 }
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356 }
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357 for (int i = 0; i < 32; i++) {
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358 if (code->moreRegs & (1 << (i-32))) {
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359 //clobbers.cons(NULL_TREE, regInfo[i].gccName);
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360 clobbers.push_back(regInfo[i].gccName);
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361 }
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362 }
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363 if (clobbers_mem)
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364 clobbers.push_back(memory_name);
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365 //clobbers.cons(NULL_TREE, memory_name);
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366 // }
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367
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368
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369 // Remap argument numbers
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370 for (unsigned i = 0; i < code->args.dim; i++) {
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371 if (arg_map[i] < 0)
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372 arg_map[i] = -arg_map[i] - 1 + n_outputs;
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373 }
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374
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375 bool pct = false;
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376 char * p = code->insnTemplate;
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377 char * q = p + code->insnTemplateLen;
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378 //printf("start: %.*s\n", code->insnTemplateLen, code->insnTemplate);
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379 while (p < q) {
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380 if (pct) {
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381 if (*p >= '0' && *p <= '9') {
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382 // %% doesn't check against nargs
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383 *p = '0' + arg_map[*p - '0'];
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384 pct = false;
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385 } else if (*p == '$') {
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386 pct = false;
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387 }
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diff changeset
388 //assert(*p == '%');// could be 'a', etc. so forget it..
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389 } else if (*p == '$')
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390 pct = true;
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391 ++p;
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392 }
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393
237
a168a2c3ea48 [svn r253] Removed -inlineasm option. inline asm is now enabled by default unless the new -noasm option is passed.
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diff changeset
394 Logger::println("final asm: %.*s", code->insnTemplateLen, code->insnTemplate);
219
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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395
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396 std::string insnt(code->insnTemplate, code->insnTemplateLen);
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397
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398 // rewrite GCC-style constraints to LLVM-style constraints
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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399 std::string llvmOutConstraints;
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400 std::string llvmInConstraints;
219
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401 int n = 0;
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402 typedef std::deque<std::string>::iterator it;
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diff changeset
403 for(it i = output_constraints.begin(), e = output_constraints.end(); i != e; ++i, ++n) {
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
404 // rewrite update constraint to in and out constraints
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
405 if((*i)[0] == '+') {
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
406 (*i)[0] = '=';
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
407 std::string input_constraint;
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diff changeset
408 std::stringstream ss;
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409 ss << n;
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
410 ss >> input_constraint;
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diff changeset
411 //FIXME: I think multiple inout constraints will mess up the order!
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diff changeset
412 input_constraints.push_front(input_constraint);
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diff changeset
413 input_values.push_front(output_values[n]);
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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414 }
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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415 llvmOutConstraints += *i;
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416 llvmOutConstraints += ",";
219
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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417 }
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
418 for(it i = input_constraints.begin(), e = input_constraints.end(); i != e; ++i) {
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
419 llvmInConstraints += *i;
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diff changeset
420 llvmInConstraints += ",";
219
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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421 }
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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diff changeset
422
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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diff changeset
423 std::string clobstr;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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424 for(it i = clobbers.begin(), e = clobbers.end(); i != e; ++i) {
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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diff changeset
425 clobstr = "~{" + *i + "},";
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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diff changeset
426 asmblock->clobs.insert(clobstr);
220
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
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diff changeset
427 }
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
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diff changeset
428
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
429 // excessive commas are removed later...
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
430
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
431 // push asm statement
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diff changeset
432 IRAsmStmt* asmStmt = new IRAsmStmt;
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diff changeset
433 asmStmt->code = insnt;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
434 asmStmt->out_c = llvmOutConstraints;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
435 asmStmt->in_c = llvmInConstraints;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
436 asmStmt->out.insert(asmStmt->out.begin(), output_values.begin(), output_values.end());
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
437 asmStmt->in.insert(asmStmt->in.begin(), input_values.begin(), input_values.end());
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
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diff changeset
438 asmStmt->isBranchToLabel = isBranchToLabel;
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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diff changeset
439 asmblock->s.push_back(asmStmt);
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
440 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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441
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
442 //////////////////////////////////////////////////////////////////////////////
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
443
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
444 AsmBlockStatement::AsmBlockStatement(Loc loc, Statements* s)
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diff changeset
445 : CompoundStatement(loc, s)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
446 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
447 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
448
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
449 // rewrite argument indices to the block scope indices
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
450 static void remap_outargs(std::string& insnt, size_t nargs, size_t& idx)
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diff changeset
451 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
452 static const std::string digits[10] =
220
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
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453 {
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
454 "0","1","2","3","4",
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
455 "5","6","7","8","9"
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
456 };
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
457 assert(nargs <= 10);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
458
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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diff changeset
459 static const std::string prefix("<<out");
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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diff changeset
460 static const std::string suffix(">>");
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
461 std::string argnum;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
462 std::string needle;
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lindquist
parents: 231
diff changeset
463 char buf[10];
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
464 for (unsigned i = 0; i < nargs; i++) {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
465 needle = prefix + digits[i] + suffix;
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
466 size_t pos = insnt.find(needle);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
467 if(pos != std::string::npos) {
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
468 sprintf(buf, "%u", idx++);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
469 insnt.replace(pos, needle.size(), buf);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
470 }
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
471 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
472 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
473
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
474 // rewrite argument indices to the block scope indices
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
475 static void remap_inargs(std::string& insnt, size_t nargs, size_t& idx)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
476 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
477 static const std::string digits[10] =
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
478 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
479 "0","1","2","3","4",
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
480 "5","6","7","8","9"
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
481 };
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
482 assert(nargs <= 10);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
483
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
lindquist
parents: 233
diff changeset
484 static const std::string prefix("<<in");
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
lindquist
parents: 233
diff changeset
485 static const std::string suffix(">>");
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
486 std::string argnum;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
487 std::string needle;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
488 char buf[10];
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
489 for (unsigned i = 0; i < nargs; i++) {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
490 needle = prefix + digits[i] + suffix;
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
491 size_t pos = insnt.find(needle);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
492 if(pos != std::string::npos) {
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
493 sprintf(buf, "%u", idx++);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
494 insnt.replace(pos, needle.size(), buf);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
495 }
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
496 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
497 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
498
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
499 void AsmBlockStatement::toIR(IRState* p)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
500 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
501 Logger::println("AsmBlockStatement::toIR(): %s", loc.toChars());
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
502 LOG_SCOPE;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
503 Logger::println("BEGIN ASM");
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
504
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
505 // create asm block structure
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
506 assert(!p->asmBlock);
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
507 IRAsmBlock* asmblock = new IRAsmBlock;
239
fa691b1c0498 [svn r256] AsmBlockStatement was still being flattened in some cases.
lindquist
parents: 237
diff changeset
508 assert(asmblock);
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
509 p->asmBlock = asmblock;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
510
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
511 // do asm statements
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
512 for (int i=0; i<statements->dim; i++)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
513 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
514 Statement* s = (Statement*)statements->data[i];
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
515 if (s) {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
516 s->toIR(p);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
517 }
220
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
lindquist
parents: 219
diff changeset
518 }
ccc2e6898a78 [svn r236] added initial codegen of inline asm, pretty buggy and incomplete still. see the tangotests/asm1.d test for a sample of what does
lindquist
parents: 219
diff changeset
519
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
520 // build forwarder for in-asm branches to external labels
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
521 // this additional asm code sets the __llvm_jump_target variable
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
522 // to a unique value that will identify the jump target in
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
523 // a post-asm switch
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
524
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
525 // create storage for and initialize the temporary
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
526 llvm::AllocaInst* jump_target = new llvm::AllocaInst(llvm::IntegerType::get(32), "__llvm_jump_target", p->topallocapoint());
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
527 gIR->ir->CreateStore(llvm::ConstantInt::get(llvm::IntegerType::get(32), 0), jump_target);
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
528
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
529 //FIXME: Store the value -> label mapping somewhere, so it can be referenced later
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
530 std::string asmGotoEnd = "jmp __llvm_asm_end ; ";
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
531 std::string outGotoSetter = asmGotoEnd;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
532
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
533 size_t n = asmblock->s.size();
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
534 for(size_t i=0; i<n; ++i)
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
535 {
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
536 IRAsmStmt* a = asmblock->s[i];
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
537
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
538 // skip non-branch statements
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
539 if(!a->isBranchToLabel)
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
540 continue;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
541
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
542 // if internal, no special handling is necessary, skip
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
543 std::vector<Identifier*>::const_iterator it, end;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
544 end = asmblock->internalLabels.end();
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
545 bool skip = false;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
546 for(it = asmblock->internalLabels.begin(); it != end; ++it)
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
547 if((*it)->equals(a->isBranchToLabel))
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
548 skip = true;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
549 if(skip)
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
550 continue;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
551
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
552 // provide an in-asm target for the branch and set value
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
553 Logger::println("statement '%s' references outer label '%s': creating forwarder", a->code.c_str(), a->isBranchToLabel->string);
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
554 outGotoSetter += a->isBranchToLabel->string;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
555 outGotoSetter += ": ; ";
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
556 outGotoSetter += "nop ; "; //FIXME: Change this to set __llvm_jump_target to a unique value
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
557 outGotoSetter += asmGotoEnd;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
558 }
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
559 if(outGotoSetter != asmGotoEnd)
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
560 {
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
561 outGotoSetter += "__llvm_asm_end: ; ";
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
562 IRAsmStmt* outSetterStmt = new IRAsmStmt;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
563 outSetterStmt->code = outGotoSetter;
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
564 //FIXME: set other stuff
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
565 asmblock->s.push_back(outSetterStmt);
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
566 }
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
567
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
568
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
569 // build asm block
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
570 std::vector<LLValue*> outargs;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
571 std::vector<LLValue*> inargs;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
572 std::vector<const LLType*> outtypes;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
573 std::vector<const LLType*> intypes;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
574 std::string out_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
575 std::string in_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
576 std::string clobbers;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
577 std::string code;
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
578 size_t asmIdx = 0;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
579
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
580 n = asmblock->s.size();
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
581 for (size_t i=0; i<n; ++i)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
582 {
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
583 IRAsmStmt* a = asmblock->s[i];
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
584 assert(a);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
585 size_t onn = a->out.size();
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
586 for (size_t j=0; j<onn; ++j)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
587 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
588 outargs.push_back(a->out[j]);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
589 outtypes.push_back(a->out[j]->getType());
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
590 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
591 if (!a->out_c.empty())
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
592 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
593 out_c += a->out_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
594 }
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
595 remap_outargs(a->code, onn+a->in.size(), asmIdx);
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
596 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
597 for (size_t i=0; i<n; ++i)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
598 {
233
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
lindquist
parents: 232
diff changeset
599 IRAsmStmt* a = asmblock->s[i];
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
600 assert(a);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
601 size_t inn = a->in.size();
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
602 for (size_t j=0; j<inn; ++j)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
603 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
604 inargs.push_back(a->in[j]);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
605 intypes.push_back(a->in[j]->getType());
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
606 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
607 if (!a->in_c.empty())
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608 {
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609 in_c += a->in_c;
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610 }
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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611 remap_inargs(a->code, inn+a->out.size(), asmIdx);
232
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612 if (!code.empty())
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613 code += " ; ";
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614 code += a->code;
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615 }
233
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616 asmblock->s.clear();
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617
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618 // append inputs
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619 out_c += in_c;
232
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620
233
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621 // append clobbers
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622 typedef std::set<std::string>::iterator clobs_it;
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623 for (clobs_it i=asmblock->clobs.begin(); i!=asmblock->clobs.end(); ++i)
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624 {
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625 out_c += *i;
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626 }
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lindquist
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diff changeset
627
76ee1bbe487e [svn r249] Changed inline asm clobbers to a set instead of a list so we don't get duplicate clobbers.
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diff changeset
628 // remove excessive comma
232
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diff changeset
629 if (!out_c.empty())
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diff changeset
630 out_c.resize(out_c.size()-1);
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631
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632 Logger::println("code = \"%s\"", code.c_str());
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diff changeset
633 Logger::println("constraints = \"%s\"", out_c.c_str());
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lindquist
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diff changeset
634
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diff changeset
635 std::vector<const LLType*> types;
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diff changeset
636 types.insert(types.end(), outtypes.begin(), outtypes.end());
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637 types.insert(types.end(), intypes.begin(), intypes.end());
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diff changeset
638 llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, types, false);
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639 Logger::cout() << "function type = " << *fty << '\n';
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640 llvm::InlineAsm* ia = llvm::InlineAsm::get(fty, code, out_c, true);
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641
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642 std::vector<LLValue*> args;
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643 args.insert(args.end(), outargs.begin(), outargs.end());
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644 args.insert(args.end(), inargs.begin(), inargs.end());
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645 llvm::CallInst* call = p->ir->CreateCall(ia, args.begin(), args.end(), "");
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646
233
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647 p->asmBlock = NULL;
232
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diff changeset
648 Logger::println("END ASM");
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
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649
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
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diff changeset
650 //FIXME: Emit goto forwarder code here
219
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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parents:
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651 }
232
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diff changeset
652
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653 // the whole idea of this statement is to avoid the flattening
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654 Statements* AsmBlockStatement::flatten(Scope* sc)
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655 {
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656 return NULL;
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657 }
239
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658
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659 Statement *AsmBlockStatement::syntaxCopy()
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660 {
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661 Statements *a = new Statements();
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lindquist
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662 a->setDim(statements->dim);
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lindquist
parents: 237
diff changeset
663 for (size_t i = 0; i < statements->dim; i++)
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diff changeset
664 {
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diff changeset
665 Statement *s = (Statement *)statements->data[i];
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666 if (s)
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667 s = s->syntaxCopy();
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668 a->data[i] = s;
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669 }
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670 AsmBlockStatement *cs = new AsmBlockStatement(loc, a);
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671 return cs;
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
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parents: 239
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672 }