annotate gen/asmstmt.cpp @ 339:385a18242485 trunk

[svn r360] Another mostly rewrite of DtoArrayInit. Should be much more robust now, and probably faster code generated for the most common cases too! Fixed issues with slice initialization (!!!) of multidimensional static arrays. Attempt to fix issue with referencing nested 'this' pointers introduced in DMD 1.033 merge.
author lindquist
date Sun, 13 Jul 2008 01:29:49 +0200
parents aaade6ded589
children 44daf304421c
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1 // Taken from GDC source tree. Original by David Friedman.
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2 // Released under the Artistic License found in dmd/artistic.txt
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3
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4 #include "gen/llvm.h"
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5 #include "llvm/InlineAsm.h"
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6
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7 //#include "d-gcc-includes.h"
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8 //#include "total.h"
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9 #include "dmd/statement.h"
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10 #include "dmd/scope.h"
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11 #include "dmd/declaration.h"
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12 #include "dmd/dsymbol.h"
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13
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14 #include <cassert>
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15 #include <deque>
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16 #include <iostream>
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17 #include <sstream>
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18 #include <cstring>
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19
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20 //#include "d-lang.h"
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21 //#include "d-codegen.h"
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22
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23 #include "gen/irstate.h"
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24 #include "gen/dvalue.h"
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25 #include "gen/tollvm.h"
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26 #include "gen/logger.h"
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27 #include "gen/todebug.h"
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28 #include "gen/llvmhelpers.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
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134 #include "d-asm-i386.h"
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135
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136 bool d_have_inline_asm() { return true; }
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137
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138 Statement *AsmStatement::semantic(Scope *sc)
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139 {
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140 bool err = false;
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141 if (global.params.cpu != ARCHx86)
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142 {
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143 error("inline asm is not supported for the \"%s\" architecture", global.params.llvmArch);
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144 err = true;
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145 }
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146 if (!global.params.useInlineAsm)
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147 {
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148 error("inline asm is not allowed when the -noasm switch is used");
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149 err = true;
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150 }
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151 if (err)
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152 fatal();
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153
219
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154 sc->func->inlineAsm = 1;
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155 sc->func->inlineStatus = ILSno; // %% not sure
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156 // %% need to set DECL_UNINLINABLE too?
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157 sc->func->hasReturnExp = 1; // %% DMD does this, apparently...
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158
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159 // empty statement -- still do the above things because they might be expected?
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160 if (! tokens)
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161 return this;
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162
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163 AsmProcessor ap(sc, this);
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164 ap.run();
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165 return this;
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166 }
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167
336
aaade6ded589 [svn r357] Merged DMD 1.033
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168 int AsmStatement::blockExit()
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169 {
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170 //printf("AsmStatement::blockExit(%p)\n", this);
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171 return BEfallthru | BEreturn | BEgoto | BEhalt;
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172 }
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173
219
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174 void
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175 AsmStatement::toIR(IRState * irs)
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176 {
220
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177 Logger::println("AsmStatement::toIR(): %s", loc.toChars());
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178 LOG_SCOPE;
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179
233
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180 // get asm block
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181 IRAsmBlock* asmblock = irs->asmBlock;
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182 assert(asmblock);
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183
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184 // debug info
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185 if (global.params.symdebug)
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186 DtoDwarfStopPoint(loc.linnum);
219
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187
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188 if (! asmcode)
233
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189 return;
219
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190
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191 static std::string i_cns = "i";
231
61aa721a6b7f [svn r247] fixed accessing global symbols from inline asm.
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192 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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193 static std::string m_cns = "*m";
221
68687d8c3e9a [svn r237] some inline asm output now seems to work, see tangotests/asm2.d
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194 static std::string mw_cns = "=*m";
223
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195 static std::string mrw_cns = "+*m";
219
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196 static std::string memory_name = "memory";
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197
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198 AsmCode * code = (AsmCode *) asmcode;
229
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199 std::deque<LLValue*> input_values;
219
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200 std::deque<std::string> input_constraints;
229
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201 std::deque<LLValue*> output_values;
219
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202 std::deque<std::string> output_constraints;
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203 std::deque<std::string> clobbers;
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204
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205 // FIXME
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206 #define HOST_WIDE_INT long
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207 HOST_WIDE_INT var_frame_offset; // "frame_offset" is a macro
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208 bool clobbers_mem = code->clobbersMemory;
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209 int input_idx = 0;
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210 int n_outputs = 0;
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211 int arg_map[10];
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212
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213 assert(code->args.dim <= 10);
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214
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215 for (unsigned i = 0; i < code->args.dim; i++) {
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216 AsmArg * arg = (AsmArg *) code->args.data[i];
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217
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218 bool is_input = true;
229
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219 LLValue* arg_val = 0;
219
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220 std::string cns;
220
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221
219
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222 switch (arg->type) {
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223 case Arg_Integer:
229
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224 arg_val = arg->expr->toElem(irs)->getRVal();
219
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225 do_integer:
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226 cns = i_cns;
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227 break;
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228 case Arg_Pointer:
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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229 assert(arg->expr->op == TOKvar);
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230 arg_val = arg->expr->toElem(irs)->getRVal();
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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231 cns = p_cns;
220
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232
219
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233 break;
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234 case Arg_Memory:
229
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235 arg_val = arg->expr->toElem(irs)->getRVal();
220
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236
219
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237 switch (arg->mode) {
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238 case Mode_Input: cns = m_cns; break;
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239 case Mode_Output: cns = mw_cns; is_input = false; break;
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240 case Mode_Update: cns = mrw_cns; is_input = false; break;
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241 default: assert(0); break;
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242 }
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243 break;
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244 case Arg_FrameRelative:
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245 // FIXME
220
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246 std::cout << "asm fixme Arg_FrameRelative" << std::endl;
229
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247 assert(0);
219
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248 /* if (arg->expr->op == TOKvar)
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249 arg_val = ((VarExp *) arg->expr)->var->toSymbol()->Stree;
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250 else
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251 assert(0);*/
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252 if ( getFrameRelativeValue(arg_val, & var_frame_offset) ) {
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253 // arg_val = irs->integerConstant(var_frame_offset);
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254 cns = i_cns;
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255 } else {
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256 this->error("%s", "argument not frame relative");
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257 return;
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258 }
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259 if (arg->mode != Mode_Input)
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260 clobbers_mem = true;
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261 break;
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262 case Arg_LocalSize:
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263 // FIXME
220
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264 std::cout << "asm fixme Arg_LocalSize" << std::endl;
229
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265 assert(0);
219
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266 /* var_frame_offset = cfun->x_frame_offset;
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267 if (var_frame_offset < 0)
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268 var_frame_offset = - var_frame_offset;
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269 arg_val = irs->integerConstant( var_frame_offset );*/
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270 goto do_integer;
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271 default:
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272 assert(0);
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273 }
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274
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275 if (is_input) {
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276 arg_map[i] = --input_idx;
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277 //inputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val);
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278 input_values.push_back(arg_val);
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279 input_constraints.push_back(cns);
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280 } else {
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281 arg_map[i] = n_outputs++;
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282 //outputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val);
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283 output_values.push_back(arg_val);
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284 output_constraints.push_back(cns);
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285 }
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286 }
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287
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288 // Telling GCC that callee-saved registers are clobbered makes it preserve
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289 // those registers. This changes the stack from what a naked function
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290 // expects.
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291
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292 // FIXME
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293 // if (! irs->func->naked) {
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294 for (int i = 0; i < 32; i++) {
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295 if (regs & (1 << i)) {
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296 //clobbers.cons(NULL_TREE, regInfo[i].gccName);
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297 clobbers.push_back(regInfo[i].gccName);
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298 }
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299 }
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300 for (int i = 0; i < 32; i++) {
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301 if (code->moreRegs & (1 << (i-32))) {
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302 //clobbers.cons(NULL_TREE, regInfo[i].gccName);
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303 clobbers.push_back(regInfo[i].gccName);
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304 }
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305 }
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306 if (clobbers_mem)
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307 clobbers.push_back(memory_name);
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308 //clobbers.cons(NULL_TREE, memory_name);
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309 // }
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310
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311
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312 // Remap argument numbers
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313 for (unsigned i = 0; i < code->args.dim; i++) {
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314 if (arg_map[i] < 0)
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315 arg_map[i] = -arg_map[i] - 1 + n_outputs;
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316 }
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317
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318 bool pct = false;
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319 char * p = code->insnTemplate;
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320 char * q = p + code->insnTemplateLen;
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321 //printf("start: %.*s\n", code->insnTemplateLen, code->insnTemplate);
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322 while (p < q) {
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323 if (pct) {
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324 if (*p >= '0' && *p <= '9') {
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325 // %% doesn't check against nargs
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326 *p = '0' + arg_map[*p - '0'];
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327 pct = false;
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328 } else if (*p == '$') {
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329 pct = false;
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330 }
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331 //assert(*p == '%');// could be 'a', etc. so forget it..
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332 } else if (*p == '$')
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333 pct = true;
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334 ++p;
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335 }
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336
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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337 Logger::println("final asm: %.*s", code->insnTemplateLen, code->insnTemplate);
219
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338
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339 std::string insnt(code->insnTemplate, code->insnTemplateLen);
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340
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341 // rewrite GCC-style constraints to LLVM-style constraints
232
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342 std::string llvmOutConstraints;
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343 std::string llvmInConstraints;
219
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344 int n = 0;
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345 typedef std::deque<std::string>::iterator it;
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346 for(it i = output_constraints.begin(), e = output_constraints.end(); i != e; ++i, ++n) {
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347 // rewrite update constraint to in and out constraints
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348 if((*i)[0] == '+') {
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349 (*i)[0] = '=';
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350 std::string input_constraint;
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351 std::stringstream ss;
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352 ss << n;
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353 ss >> input_constraint;
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354 //FIXME: I think multiple inout constraints will mess up the order!
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355 input_constraints.push_front(input_constraint);
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356 input_values.push_front(output_values[n]);
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357 }
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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358 llvmOutConstraints += *i;
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359 llvmOutConstraints += ",";
219
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360 }
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361 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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362 llvmInConstraints += *i;
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363 llvmInConstraints += ",";
219
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364 }
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365
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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366 std::string clobstr;
232
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367 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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368 clobstr = "~{" + *i + "},";
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369 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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370 }
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
371
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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372 // excessive commas are removed later...
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373
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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374 // push asm statement
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375 IRAsmStmt* asmStmt = new IRAsmStmt;
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376 asmStmt->code = insnt;
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377 asmStmt->out_c = llvmOutConstraints;
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378 asmStmt->in_c = llvmInConstraints;
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379 asmStmt->out.insert(asmStmt->out.begin(), output_values.begin(), output_values.end());
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380 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
381 asmStmt->isBranchToLabel = isBranchToLabel;
233
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diff changeset
382 asmblock->s.push_back(asmStmt);
232
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383 }
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384
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385 //////////////////////////////////////////////////////////////////////////////
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386
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387 AsmBlockStatement::AsmBlockStatement(Loc loc, Statements* s)
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388 : CompoundStatement(loc, s)
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389 {
309
d59c363fccad [svn r330] Implemented synchronized statements.
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diff changeset
390 enclosinghandler = NULL;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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391 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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392
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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393 // rewrite argument indices to the block scope indices
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394 static void remap_outargs(std::string& insnt, size_t nargs, size_t& idx)
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395 {
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396 static const std::string digits[10] =
220
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397 {
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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398 "0","1","2","3","4",
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399 "5","6","7","8","9"
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400 };
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401 assert(nargs <= 10);
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402
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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403 static const std::string prefix("<<out");
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404 static const std::string suffix(">>");
232
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405 std::string argnum;
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406 std::string needle;
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407 char buf[10];
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408 for (unsigned i = 0; i < nargs; i++) {
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409 needle = prefix + digits[i] + suffix;
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
410 size_t pos = insnt.find(needle);
303
4aa2b6753059 [svn r324] Small indentation fixes.
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diff changeset
411 if(std::string::npos != pos)
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
412 sprintf(buf, "%u", idx++);
302
bef811104734 [svn r323] Branching out of inline asm works.
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diff changeset
413 while(std::string::npos != (pos = insnt.find(needle)))
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
414 insnt.replace(pos, needle.size(), buf);
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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415 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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416 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
417
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
418 // rewrite argument indices to the block scope indices
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419 static void remap_inargs(std::string& insnt, size_t nargs, size_t& idx)
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diff changeset
420 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
421 static const std::string digits[10] =
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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422 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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423 "0","1","2","3","4",
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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424 "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
425 };
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
426 assert(nargs <= 10);
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diff changeset
427
234
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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diff changeset
428 static const std::string prefix("<<in");
9760f54af0b7 [svn r250] Fixed the warning about dropping arguments to _Dmain when optimizing.
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diff changeset
429 static const std::string suffix(">>");
232
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diff changeset
430 std::string argnum;
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diff changeset
431 std::string needle;
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diff changeset
432 char buf[10];
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diff changeset
433 for (unsigned i = 0; i < nargs; i++) {
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diff changeset
434 needle = prefix + digits[i] + suffix;
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
435 size_t pos = insnt.find(needle);
303
4aa2b6753059 [svn r324] Small indentation fixes.
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diff changeset
436 if(std::string::npos != pos)
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
437 sprintf(buf, "%u", idx++);
302
bef811104734 [svn r323] Branching out of inline asm works.
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diff changeset
438 while(std::string::npos != (pos = insnt.find(needle)))
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
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diff changeset
439 insnt.replace(pos, needle.size(), buf);
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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diff changeset
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 void AsmBlockStatement::toIR(IRState* p)
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diff changeset
444 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
445 Logger::println("AsmBlockStatement::toIR(): %s", loc.toChars());
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diff changeset
446 LOG_SCOPE;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
447 Logger::println("BEGIN ASM");
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
448
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
449 // 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.
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diff changeset
450 assert(!p->asmBlock);
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
451 IRAsmBlock* asmblock = new IRAsmBlock;
239
fa691b1c0498 [svn r256] AsmBlockStatement was still being flattened in some cases.
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diff changeset
452 assert(asmblock);
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
453 p->asmBlock = asmblock;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
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diff changeset
454
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
455 // do asm statements
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
456 for (int i=0; i<statements->dim; i++)
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
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diff changeset
457 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
458 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
459 if (s) {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
460 s->toIR(p);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
461 }
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
462 }
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
463
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
464 // 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
465 // 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
466 // 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
467 // a post-asm switch
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
468
312
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
469 // maps each goto destination to its special value
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
470 std::map<Identifier*, int> gotoToVal;
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
471
312
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
472 // location of the special value determining the goto label
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
473 // will be set if post-asm dispatcher block is needed
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
474 llvm::AllocaInst* jump_target;
301
f42a1090e895 [svn r322] More asm-to-outside jumping work. Unfinished.
ChristianK
parents: 300
diff changeset
475
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
476 {
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
477 FuncDeclaration* fd = gIR->func()->decl;
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
478 char* fdmangle = fd->mangle();
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
479
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
480 // we use a simple static counter to make sure the new end labels are unique
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
481 static size_t uniqueLabelsId = 0;
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
482 std::ostringstream asmGotoEndLabel;
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
483 asmGotoEndLabel << "." << fdmangle << "__llvm_asm_end" << uniqueLabelsId++;
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
484
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
485 // initialize the setter statement we're going to build
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
486 IRAsmStmt* outSetterStmt = new IRAsmStmt;
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
487 std::string asmGotoEnd = "jmp "+asmGotoEndLabel.str()+" ; ";
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
488 std::ostringstream code;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
489 code << asmGotoEnd;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
490
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
491 int n_goto = 1;
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
492
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
493 size_t n = asmblock->s.size();
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
494 for(size_t i=0; i<n; ++i)
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
495 {
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
496 IRAsmStmt* a = asmblock->s[i];
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
497
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
498 // skip non-branch statements
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
499 if(!a->isBranchToLabel)
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
500 continue;
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
501
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
502 // if internal, no special handling is necessary, skip
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
503 std::vector<Identifier*>::const_iterator it, end;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
504 end = asmblock->internalLabels.end();
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
505 bool skip = false;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
506 for(it = asmblock->internalLabels.begin(); it != end; ++it)
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
507 if((*it)->equals(a->isBranchToLabel))
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
508 skip = true;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
509 if(skip)
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
510 continue;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
511
312
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
512 // if we already set things up for this branch target, skip
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
513 if(gotoToVal.find(a->isBranchToLabel) != gotoToVal.end())
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
514 continue;
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
515
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
516 // record that the jump needs to be handled in the post-asm dispatcher
312
553f844ae5b9 [svn r333] Fix inline asm bug with multiple branches to the same label.
ChristianK
parents: 309
diff changeset
517 gotoToVal[a->isBranchToLabel] = n_goto;
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
518
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
519 // provide an in-asm target for the branch and set value
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
520 Logger::println("statement '%s' references outer label '%s': creating forwarder", a->code.c_str(), a->isBranchToLabel->string);
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
521 code << fdmangle << '_' << a->isBranchToLabel->string << ": ; ";
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
522 code << "movl $<<in" << n_goto << ">>, $<<out0>> ; ";
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
523 //FIXME: Store the value -> label mapping somewhere, so it can be referenced later
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
524 outSetterStmt->in.push_back(DtoConstUint(n_goto));
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
525 outSetterStmt->in_c += "i,";
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
526 code << asmGotoEnd;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
527
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
528 ++n_goto;
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
529 }
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
530 if(code.str() != asmGotoEnd)
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
531 {
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
532 // finalize code
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
533 outSetterStmt->code = code.str();
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
534 outSetterStmt->code += asmGotoEndLabel.str()+": ; ";
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
535
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
536 // create storage for and initialize the temporary
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
537 jump_target = new llvm::AllocaInst(llvm::IntegerType::get(32), "__llvm_jump_target", p->topallocapoint());
305
2b72433d5c8c [svn r326] Fixed a bunch of issues with printf's that MinGW32 did not support.
lindquist
parents: 304
diff changeset
538 gIR->ir->CreateStore(DtoConstUint(0), jump_target);
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
539 // setup variable for output from asm
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
540 outSetterStmt->out_c = "=*m,";
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
541 outSetterStmt->out.push_back(jump_target);
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
542
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
543 asmblock->s.push_back(outSetterStmt);
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
544 }
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
545 else
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
546 delete outSetterStmt;
299
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
547 }
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
548
df8a7b8d5929 [svn r320] Begun work on branches out of asm blocks. Unfinished.
ChristianK
parents: 239
diff changeset
549
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
550 // build asm block
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
551 std::vector<LLValue*> outargs;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
552 std::vector<LLValue*> inargs;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
553 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
554 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
555 std::string out_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
556 std::string in_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
557 std::string clobbers;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
558 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
559 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
560
302
bef811104734 [svn r323] Branching out of inline asm works.
ChristianK
parents: 301
diff changeset
561 size_t 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
562 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
563 {
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
564 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
565 assert(a);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
566 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
567 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
568 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
569 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
570 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
571 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
572 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
573 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
574 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
575 }
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
576 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
577 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
578 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
579 {
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
580 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
581 assert(a);
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
582 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
583 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
584 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
585 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
586 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
587 }
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
588 if (!a->in_c.empty())
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
589 {
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
590 in_c += a->in_c;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
591 }
300
7b1040c76dd2 [svn r321] Fix bug in argument remapping functions.
ChristianK
parents: 299
diff changeset
592 remap_inargs(a->code, inn+a->out.size(), asmIdx);
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
593 if (!code.empty())
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
594 code += " ; ";
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
595 code += a->code;
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
596 }
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
597 asmblock->s.clear();
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
598
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 // append inputs
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
600 out_c += in_c;
232
092468448d25 [svn r248] Fixed: labels in inline asm block now work for the normal case.
lindquist
parents: 231
diff changeset
601
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
602 // append clobbers
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
603 typedef std::set<std::string>::iterator clobs_it;
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604 for (clobs_it i=asmblock->clobs.begin(); i!=asmblock->clobs.end(); ++i)
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605 {
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606 out_c += *i;
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607 }
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608
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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609 // remove excessive comma
232
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610 if (!out_c.empty())
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611 out_c.resize(out_c.size()-1);
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612
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613 Logger::println("code = \"%s\"", code.c_str());
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614 Logger::println("constraints = \"%s\"", out_c.c_str());
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615
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616 std::vector<const LLType*> types;
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617 types.insert(types.end(), outtypes.begin(), outtypes.end());
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618 types.insert(types.end(), intypes.begin(), intypes.end());
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619 llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, types, false);
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620 Logger::cout() << "function type = " << *fty << '\n';
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621 llvm::InlineAsm* ia = llvm::InlineAsm::get(fty, code, out_c, true);
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622
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623 std::vector<LLValue*> args;
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624 args.insert(args.end(), outargs.begin(), outargs.end());
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625 args.insert(args.end(), inargs.begin(), inargs.end());
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626 llvm::CallInst* call = p->ir->CreateCall(ia, args.begin(), args.end(), "");
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627
233
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628 p->asmBlock = NULL;
232
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629 Logger::println("END ASM");
299
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630
302
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631 // if asm contained external branches, emit goto forwarder code
312
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632 if(!gotoToVal.empty())
302
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633 {
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634 assert(jump_target);
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635
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636 // make new blocks
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637 llvm::BasicBlock* oldend = gIR->scopeend();
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638 llvm::BasicBlock* bb = llvm::BasicBlock::Create("afterasmgotoforwarder", p->topfunc(), oldend);
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639
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640 llvm::LoadInst* val = p->ir->CreateLoad(jump_target, "__llvm_jump_target_value");
312
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641 llvm::SwitchInst* sw = p->ir->CreateSwitch(val, bb, gotoToVal.size());
302
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642
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643 // add all cases
312
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644 std::map<Identifier*, int>::iterator it, end = gotoToVal.end();
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645 for(it = gotoToVal.begin(); it != end; ++it)
302
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646 {
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647 llvm::BasicBlock* casebb = llvm::BasicBlock::Create("case", p->topfunc(), bb);
312
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648 sw->addCase(llvm::ConstantInt::get(llvm::IntegerType::get(32), it->second), casebb);
302
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649
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650 p->scope() = IRScope(casebb,bb);
312
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651 DtoGoto(&loc, it->first, enclosinghandler);
302
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652 }
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653
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654 p->scope() = IRScope(bb,oldend);
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655 }
219
761c8352f494 [svn r235] rough port of GDC's inline assembler code, unfinished
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656 }
232
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657
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658 // the whole idea of this statement is to avoid the flattening
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659 Statements* AsmBlockStatement::flatten(Scope* sc)
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660 {
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661 return NULL;
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662 }
239
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663
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664 Statement *AsmBlockStatement::syntaxCopy()
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665 {
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666 Statements *a = new Statements();
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667 a->setDim(statements->dim);
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668 for (size_t i = 0; i < statements->dim; i++)
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669 {
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670 Statement *s = (Statement *)statements->data[i];
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671 if (s)
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672 s = s->syntaxCopy();
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673 a->data[i] = s;
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674 }
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675 AsmBlockStatement *cs = new AsmBlockStatement(loc, a);
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676 return cs;
299
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677 }
302
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678
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679 // necessary for in-asm branches
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680 Statement *AsmBlockStatement::semantic(Scope *sc)
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681 {
309
d59c363fccad [svn r330] Implemented synchronized statements.
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682 enclosinghandler = sc->tfOfTry;
302
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683
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684 return CompoundStatement::semantic(sc);
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685 }