Mercurial > projects > ldc
annotate gen/asmstmt.cpp @ 314:8d98e42ece93 trunk
[svn r335] The basics of exception handling are in place.
Still need to make sure calls are turned into invokes everywhere. (NewExpression for instance)
Still some rough edges and corner cases to figure out.
Needs testing!
author | ChristianK |
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date | Wed, 02 Jul 2008 22:20:18 +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; |
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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; | |
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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]; | |
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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; | |
299
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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 } |