Mercurial > projects > ldc
annotate gen/asmstmt.cpp @ 316:163cad969791 trunk
[svn r337] Reverted changes to toobj.cpp: Module constructor calls can never be invokes.
author | ChristianK |
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date | Fri, 04 Jul 2008 08:51:49 +0200 |
parents | 553f844ae5b9 |
children | aaade6ded589 |
rev | line source |
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304 | 1 // Taken from GDC source tree. Original by David Friedman. |
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" |
302 | 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 |
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168 void |
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169 AsmStatement::toIR(IRState * irs) |
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170 { |
220
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171 Logger::println("AsmStatement::toIR(): %s", loc.toChars()); |
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172 LOG_SCOPE; |
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173 |
233
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174 // get asm block |
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175 IRAsmBlock* asmblock = irs->asmBlock; |
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176 assert(asmblock); |
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177 |
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178 // debug info |
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179 if (global.params.symdebug) |
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180 DtoDwarfStopPoint(loc.linnum); |
219
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181 |
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182 if (! asmcode) |
233
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183 return; |
219
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184 |
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185 static std::string i_cns = "i"; |
231
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186 static std::string p_cns = "i"; |
222
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187 static std::string m_cns = "*m"; |
221
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188 static std::string mw_cns = "=*m"; |
223
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189 static std::string mrw_cns = "+*m"; |
219
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190 static std::string memory_name = "memory"; |
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191 |
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192 AsmCode * code = (AsmCode *) asmcode; |
229
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193 std::deque<LLValue*> input_values; |
219
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194 std::deque<std::string> input_constraints; |
229
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195 std::deque<LLValue*> output_values; |
219
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196 std::deque<std::string> output_constraints; |
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197 std::deque<std::string> clobbers; |
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198 |
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199 // FIXME |
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200 #define HOST_WIDE_INT long |
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201 HOST_WIDE_INT var_frame_offset; // "frame_offset" is a macro |
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202 bool clobbers_mem = code->clobbersMemory; |
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203 int input_idx = 0; |
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204 int n_outputs = 0; |
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205 int arg_map[10]; |
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206 |
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207 assert(code->args.dim <= 10); |
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208 |
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209 for (unsigned i = 0; i < code->args.dim; i++) { |
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210 AsmArg * arg = (AsmArg *) code->args.data[i]; |
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211 |
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212 bool is_input = true; |
229
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213 LLValue* arg_val = 0; |
219
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214 std::string cns; |
220
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215 |
219
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216 switch (arg->type) { |
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217 case Arg_Integer: |
229
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218 arg_val = arg->expr->toElem(irs)->getRVal(); |
219
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219 do_integer: |
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220 cns = i_cns; |
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221 break; |
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222 case Arg_Pointer: |
234
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223 assert(arg->expr->op == TOKvar); |
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224 arg_val = arg->expr->toElem(irs)->getRVal(); |
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225 cns = p_cns; |
220
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226 |
219
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227 break; |
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228 case Arg_Memory: |
229
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229 arg_val = arg->expr->toElem(irs)->getRVal(); |
220
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230 |
219
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231 switch (arg->mode) { |
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232 case Mode_Input: cns = m_cns; break; |
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233 case Mode_Output: cns = mw_cns; is_input = false; break; |
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234 case Mode_Update: cns = mrw_cns; is_input = false; break; |
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235 default: assert(0); break; |
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236 } |
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237 break; |
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238 case Arg_FrameRelative: |
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239 // FIXME |
220
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240 std::cout << "asm fixme Arg_FrameRelative" << std::endl; |
229
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241 assert(0); |
219
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242 /* if (arg->expr->op == TOKvar) |
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243 arg_val = ((VarExp *) arg->expr)->var->toSymbol()->Stree; |
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244 else |
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245 assert(0);*/ |
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246 if ( getFrameRelativeValue(arg_val, & var_frame_offset) ) { |
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247 // arg_val = irs->integerConstant(var_frame_offset); |
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248 cns = i_cns; |
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249 } else { |
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250 this->error("%s", "argument not frame relative"); |
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251 return; |
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252 } |
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253 if (arg->mode != Mode_Input) |
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254 clobbers_mem = true; |
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255 break; |
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256 case Arg_LocalSize: |
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257 // FIXME |
220
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258 std::cout << "asm fixme Arg_LocalSize" << std::endl; |
229
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259 assert(0); |
219
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260 /* var_frame_offset = cfun->x_frame_offset; |
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261 if (var_frame_offset < 0) |
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262 var_frame_offset = - var_frame_offset; |
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263 arg_val = irs->integerConstant( var_frame_offset );*/ |
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264 goto do_integer; |
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265 default: |
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266 assert(0); |
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267 } |
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268 |
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269 if (is_input) { |
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270 arg_map[i] = --input_idx; |
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271 //inputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val); |
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272 input_values.push_back(arg_val); |
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273 input_constraints.push_back(cns); |
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274 } else { |
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275 arg_map[i] = n_outputs++; |
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276 //outputs.cons(tree_cons(NULL_TREE, cns, NULL_TREE), arg_val); |
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277 output_values.push_back(arg_val); |
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278 output_constraints.push_back(cns); |
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279 } |
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280 } |
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281 |
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282 // Telling GCC that callee-saved registers are clobbered makes it preserve |
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283 // those registers. This changes the stack from what a naked function |
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284 // expects. |
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285 |
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286 // FIXME |
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287 // if (! irs->func->naked) { |
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288 for (int i = 0; i < 32; i++) { |
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289 if (regs & (1 << i)) { |
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290 //clobbers.cons(NULL_TREE, regInfo[i].gccName); |
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291 clobbers.push_back(regInfo[i].gccName); |
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292 } |
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293 } |
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294 for (int i = 0; i < 32; i++) { |
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295 if (code->moreRegs & (1 << (i-32))) { |
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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 if (clobbers_mem) |
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301 clobbers.push_back(memory_name); |
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302 //clobbers.cons(NULL_TREE, memory_name); |
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303 // } |
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304 |
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305 |
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306 // Remap argument numbers |
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307 for (unsigned i = 0; i < code->args.dim; i++) { |
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308 if (arg_map[i] < 0) |
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309 arg_map[i] = -arg_map[i] - 1 + n_outputs; |
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310 } |
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311 |
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312 bool pct = false; |
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313 char * p = code->insnTemplate; |
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314 char * q = p + code->insnTemplateLen; |
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315 //printf("start: %.*s\n", code->insnTemplateLen, code->insnTemplate); |
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316 while (p < q) { |
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317 if (pct) { |
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318 if (*p >= '0' && *p <= '9') { |
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319 // %% doesn't check against nargs |
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320 *p = '0' + arg_map[*p - '0']; |
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321 pct = false; |
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322 } else if (*p == '$') { |
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323 pct = false; |
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324 } |
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325 //assert(*p == '%');// could be 'a', etc. so forget it.. |
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326 } else if (*p == '$') |
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327 pct = true; |
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328 ++p; |
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329 } |
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330 |
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331 Logger::println("final asm: %.*s", code->insnTemplateLen, code->insnTemplate); |
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332 |
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333 std::string insnt(code->insnTemplate, code->insnTemplateLen); |
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334 |
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335 // rewrite GCC-style constraints to LLVM-style constraints |
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336 std::string llvmOutConstraints; |
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337 std::string llvmInConstraints; |
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338 int n = 0; |
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339 typedef std::deque<std::string>::iterator it; |
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340 for(it i = output_constraints.begin(), e = output_constraints.end(); i != e; ++i, ++n) { |
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341 // rewrite update constraint to in and out constraints |
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342 if((*i)[0] == '+') { |
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343 (*i)[0] = '='; |
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344 std::string input_constraint; |
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345 std::stringstream ss; |
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346 ss << n; |
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347 ss >> input_constraint; |
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348 //FIXME: I think multiple inout constraints will mess up the order! |
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349 input_constraints.push_front(input_constraint); |
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350 input_values.push_front(output_values[n]); |
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351 } |
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352 llvmOutConstraints += *i; |
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353 llvmOutConstraints += ","; |
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354 } |
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355 for(it i = input_constraints.begin(), e = input_constraints.end(); i != e; ++i) { |
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356 llvmInConstraints += *i; |
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357 llvmInConstraints += ","; |
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358 } |
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359 |
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360 std::string clobstr; |
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361 for(it i = clobbers.begin(), e = clobbers.end(); i != e; ++i) { |
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362 clobstr = "~{" + *i + "},"; |
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363 asmblock->clobs.insert(clobstr); |
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364 } |
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365 |
232
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366 // excessive commas are removed later... |
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367 |
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368 // push asm statement |
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369 IRAsmStmt* asmStmt = new IRAsmStmt; |
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370 asmStmt->code = insnt; |
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371 asmStmt->out_c = llvmOutConstraints; |
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372 asmStmt->in_c = llvmInConstraints; |
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373 asmStmt->out.insert(asmStmt->out.begin(), output_values.begin(), output_values.end()); |
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374 asmStmt->in.insert(asmStmt->in.begin(), input_values.begin(), input_values.end()); |
299
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375 asmStmt->isBranchToLabel = isBranchToLabel; |
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376 asmblock->s.push_back(asmStmt); |
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377 } |
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378 |
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379 ////////////////////////////////////////////////////////////////////////////// |
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380 |
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381 AsmBlockStatement::AsmBlockStatement(Loc loc, Statements* s) |
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382 : CompoundStatement(loc, s) |
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383 { |
309 | 384 enclosinghandler = NULL; |
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385 } |
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386 |
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387 // rewrite argument indices to the block scope indices |
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388 static void remap_outargs(std::string& insnt, size_t nargs, size_t& idx) |
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389 { |
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390 static const std::string digits[10] = |
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391 { |
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392 "0","1","2","3","4", |
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393 "5","6","7","8","9" |
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394 }; |
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395 assert(nargs <= 10); |
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396 |
234
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397 static const std::string prefix("<<out"); |
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398 static const std::string suffix(">>"); |
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399 std::string argnum; |
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400 std::string needle; |
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401 char buf[10]; |
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402 for (unsigned i = 0; i < nargs; i++) { |
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403 needle = prefix + digits[i] + suffix; |
300
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404 size_t pos = insnt.find(needle); |
303 | 405 if(std::string::npos != pos) |
300
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406 sprintf(buf, "%u", idx++); |
302 | 407 while(std::string::npos != (pos = insnt.find(needle))) |
300
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408 insnt.replace(pos, needle.size(), buf); |
232
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409 } |
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410 } |
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411 |
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412 // rewrite argument indices to the block scope indices |
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413 static void remap_inargs(std::string& insnt, size_t nargs, size_t& idx) |
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414 { |
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415 static const std::string digits[10] = |
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416 { |
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417 "0","1","2","3","4", |
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418 "5","6","7","8","9" |
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419 }; |
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420 assert(nargs <= 10); |
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421 |
234
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422 static const std::string prefix("<<in"); |
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423 static const std::string suffix(">>"); |
232
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424 std::string argnum; |
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425 std::string needle; |
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426 char buf[10]; |
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427 for (unsigned i = 0; i < nargs; i++) { |
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428 needle = prefix + digits[i] + suffix; |
300
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429 size_t pos = insnt.find(needle); |
303 | 430 if(std::string::npos != pos) |
300
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431 sprintf(buf, "%u", idx++); |
302 | 432 while(std::string::npos != (pos = insnt.find(needle))) |
300
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433 insnt.replace(pos, needle.size(), buf); |
232
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434 } |
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435 } |
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436 |
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437 void AsmBlockStatement::toIR(IRState* p) |
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438 { |
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439 Logger::println("AsmBlockStatement::toIR(): %s", loc.toChars()); |
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440 LOG_SCOPE; |
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441 Logger::println("BEGIN ASM"); |
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442 |
233
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443 // create asm block structure |
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444 assert(!p->asmBlock); |
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445 IRAsmBlock* asmblock = new IRAsmBlock; |
239
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446 assert(asmblock); |
233
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447 p->asmBlock = asmblock; |
232
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448 |
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449 // do asm statements |
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450 for (int i=0; i<statements->dim; i++) |
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451 { |
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452 Statement* s = (Statement*)statements->data[i]; |
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453 if (s) { |
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454 s->toIR(p); |
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455 } |
220
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456 } |
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457 |
299
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458 // build forwarder for in-asm branches to external labels |
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459 // this additional asm code sets the __llvm_jump_target variable |
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460 // to a unique value that will identify the jump target in |
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461 // a post-asm switch |
300
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462 |
312
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463 // maps each goto destination to its special value |
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464 std::map<Identifier*, int> gotoToVal; |
300
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465 |
312
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466 // location of the special value determining the goto label |
302 | 467 // will be set if post-asm dispatcher block is needed |
468 llvm::AllocaInst* jump_target; | |
301
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469 |
302 | 470 { |
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471 FuncDeclaration* fd = gIR->func()->decl; |
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472 char* fdmangle = fd->mangle(); |
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473 |
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474 // we use a simple static counter to make sure the new end labels are unique |
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475 static size_t uniqueLabelsId = 0; |
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476 std::ostringstream asmGotoEndLabel; |
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477 asmGotoEndLabel << "." << fdmangle << "__llvm_asm_end" << uniqueLabelsId++; |
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478 |
302 | 479 // initialize the setter statement we're going to build |
480 IRAsmStmt* outSetterStmt = new IRAsmStmt; | |
305
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481 std::string asmGotoEnd = "jmp "+asmGotoEndLabel.str()+" ; "; |
302 | 482 std::ostringstream code; |
483 code << asmGotoEnd; | |
484 | |
485 int n_goto = 1; | |
299
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486 |
302 | 487 size_t n = asmblock->s.size(); |
488 for(size_t i=0; i<n; ++i) | |
489 { | |
490 IRAsmStmt* a = asmblock->s[i]; | |
299
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491 |
302 | 492 // skip non-branch statements |
493 if(!a->isBranchToLabel) | |
494 continue; | |
299
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495 |
302 | 496 // if internal, no special handling is necessary, skip |
497 std::vector<Identifier*>::const_iterator it, end; | |
498 end = asmblock->internalLabels.end(); | |
499 bool skip = false; | |
500 for(it = asmblock->internalLabels.begin(); it != end; ++it) | |
305
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501 if((*it)->equals(a->isBranchToLabel)) |
302 | 502 skip = true; |
503 if(skip) | |
504 continue; | |
505 | |
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506 // if we already set things up for this branch target, skip |
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507 if(gotoToVal.find(a->isBranchToLabel) != gotoToVal.end()) |
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508 continue; |
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509 |
302 | 510 // record that the jump needs to be handled in the post-asm dispatcher |
312
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511 gotoToVal[a->isBranchToLabel] = n_goto; |
299
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512 |
302 | 513 // provide an in-asm target for the branch and set value |
305
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514 Logger::println("statement '%s' references outer label '%s': creating forwarder", a->code.c_str(), a->isBranchToLabel->string); |
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515 code << fdmangle << '_' << a->isBranchToLabel->string << ": ; "; |
302 | 516 code << "movl $<<in" << n_goto << ">>, $<<out0>> ; "; |
517 //FIXME: Store the value -> label mapping somewhere, so it can be referenced later | |
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518 outSetterStmt->in.push_back(DtoConstUint(n_goto)); |
302 | 519 outSetterStmt->in_c += "i,"; |
520 code << asmGotoEnd; | |
521 | |
522 ++n_goto; | |
523 } | |
524 if(code.str() != asmGotoEnd) | |
525 { | |
526 // finalize code | |
527 outSetterStmt->code = code.str(); | |
305
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528 outSetterStmt->code += asmGotoEndLabel.str()+": ; "; |
302 | 529 |
530 // create storage for and initialize the temporary | |
531 jump_target = new llvm::AllocaInst(llvm::IntegerType::get(32), "__llvm_jump_target", p->topallocapoint()); | |
305
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532 gIR->ir->CreateStore(DtoConstUint(0), jump_target); |
302 | 533 // setup variable for output from asm |
534 outSetterStmt->out_c = "=*m,"; | |
535 outSetterStmt->out.push_back(jump_target); | |
536 | |
537 asmblock->s.push_back(outSetterStmt); | |
538 } | |
539 else | |
540 delete outSetterStmt; | |
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541 } |
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542 |
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543 |
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544 // build asm block |
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545 std::vector<LLValue*> outargs; |
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546 std::vector<LLValue*> inargs; |
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547 std::vector<const LLType*> outtypes; |
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548 std::vector<const LLType*> intypes; |
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549 std::string out_c; |
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550 std::string in_c; |
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551 std::string clobbers; |
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552 std::string code; |
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553 size_t asmIdx = 0; |
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554 |
302 | 555 size_t n = asmblock->s.size(); |
232
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556 for (size_t i=0; i<n; ++i) |
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557 { |
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558 IRAsmStmt* a = asmblock->s[i]; |
232
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559 assert(a); |
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560 size_t onn = a->out.size(); |
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561 for (size_t j=0; j<onn; ++j) |
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562 { |
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563 outargs.push_back(a->out[j]); |
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564 outtypes.push_back(a->out[j]->getType()); |
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565 } |
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566 if (!a->out_c.empty()) |
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567 { |
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568 out_c += a->out_c; |
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569 } |
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570 remap_outargs(a->code, onn+a->in.size(), asmIdx); |
232
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571 } |
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572 for (size_t i=0; i<n; ++i) |
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573 { |
233
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574 IRAsmStmt* a = asmblock->s[i]; |
232
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575 assert(a); |
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576 size_t inn = a->in.size(); |
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577 for (size_t j=0; j<inn; ++j) |
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578 { |
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579 inargs.push_back(a->in[j]); |
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580 intypes.push_back(a->in[j]->getType()); |
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581 } |
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582 if (!a->in_c.empty()) |
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583 { |
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584 in_c += a->in_c; |
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585 } |
300
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586 remap_inargs(a->code, inn+a->out.size(), asmIdx); |
232
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587 if (!code.empty()) |
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588 code += " ; "; |
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589 code += a->code; |
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590 } |
233
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591 asmblock->s.clear(); |
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592 |
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593 // append inputs |
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594 out_c += in_c; |
232
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595 |
233
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596 // append clobbers |
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597 typedef std::set<std::string>::iterator clobs_it; |
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598 for (clobs_it i=asmblock->clobs.begin(); i!=asmblock->clobs.end(); ++i) |
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599 { |
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600 out_c += *i; |
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601 } |
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602 |
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603 // remove excessive comma |
232
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604 if (!out_c.empty()) |
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605 out_c.resize(out_c.size()-1); |
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606 |
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607 Logger::println("code = \"%s\"", code.c_str()); |
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608 Logger::println("constraints = \"%s\"", out_c.c_str()); |
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609 |
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610 std::vector<const LLType*> types; |
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611 types.insert(types.end(), outtypes.begin(), outtypes.end()); |
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612 types.insert(types.end(), intypes.begin(), intypes.end()); |
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613 llvm::FunctionType* fty = llvm::FunctionType::get(llvm::Type::VoidTy, types, false); |
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614 Logger::cout() << "function type = " << *fty << '\n'; |
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615 llvm::InlineAsm* ia = llvm::InlineAsm::get(fty, code, out_c, true); |
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616 |
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617 std::vector<LLValue*> args; |
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618 args.insert(args.end(), outargs.begin(), outargs.end()); |
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619 args.insert(args.end(), inargs.begin(), inargs.end()); |
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620 llvm::CallInst* call = p->ir->CreateCall(ia, args.begin(), args.end(), ""); |
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621 |
233
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622 p->asmBlock = NULL; |
232
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623 Logger::println("END ASM"); |
299
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624 |
302 | 625 // if asm contained external branches, emit goto forwarder code |
312
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626 if(!gotoToVal.empty()) |
302 | 627 { |
628 assert(jump_target); | |
629 | |
630 // make new blocks | |
631 llvm::BasicBlock* oldend = gIR->scopeend(); | |
632 llvm::BasicBlock* bb = llvm::BasicBlock::Create("afterasmgotoforwarder", p->topfunc(), oldend); | |
633 | |
634 llvm::LoadInst* val = p->ir->CreateLoad(jump_target, "__llvm_jump_target_value"); | |
312
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635 llvm::SwitchInst* sw = p->ir->CreateSwitch(val, bb, gotoToVal.size()); |
302 | 636 |
637 // add all cases | |
312
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638 std::map<Identifier*, int>::iterator it, end = gotoToVal.end(); |
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639 for(it = gotoToVal.begin(); it != end; ++it) |
302 | 640 { |
641 llvm::BasicBlock* casebb = llvm::BasicBlock::Create("case", p->topfunc(), bb); | |
312
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642 sw->addCase(llvm::ConstantInt::get(llvm::IntegerType::get(32), it->second), casebb); |
302 | 643 |
644 p->scope() = IRScope(casebb,bb); | |
312
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645 DtoGoto(&loc, it->first, enclosinghandler); |
302 | 646 } |
647 | |
648 p->scope() = IRScope(bb,oldend); | |
649 } | |
219
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650 } |
232
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651 |
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652 // the whole idea of this statement is to avoid the flattening |
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653 Statements* AsmBlockStatement::flatten(Scope* sc) |
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654 { |
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655 return NULL; |
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656 } |
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657 |
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658 Statement *AsmBlockStatement::syntaxCopy() |
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659 { |
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660 Statements *a = new Statements(); |
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661 a->setDim(statements->dim); |
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662 for (size_t i = 0; i < statements->dim; i++) |
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663 { |
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664 Statement *s = (Statement *)statements->data[i]; |
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665 if (s) |
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666 s = s->syntaxCopy(); |
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667 a->data[i] = s; |
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668 } |
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669 AsmBlockStatement *cs = new AsmBlockStatement(loc, a); |
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670 return cs; |
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671 } |
302 | 672 |
673 // necessary for in-asm branches | |
674 Statement *AsmBlockStatement::semantic(Scope *sc) | |
675 { | |
309 | 676 enclosinghandler = sc->tfOfTry; |
302 | 677 |
678 return CompoundStatement::semantic(sc); | |
679 } |