Mercurial > projects > ldc
annotate gen/cl_helpers.h @ 1404:11b122f92136
Now that templates instantiations are no longer emitted for all modules that
even blink at them they seem to break due to being linkonce (if compiled with
any optimization level > 0), so let's give them weak linkage instead.
The difference is that unreferenced linkonce symbols can be deleted, while
weak symbols need to be preserved.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Thu, 21 May 2009 15:23:28 +0200 |
parents | 3171f67ad006 |
children | 40bd4a0d4870 |
rev | line source |
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1 #ifndef LDC_CL_HELPERS_H |
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2 #define LDC_CL_HELPERS_H |
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3 |
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4 #include <string> |
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5 |
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6 #include "llvm/Support/CommandLine.h" |
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7 #include "llvm/Support/Compiler.h" |
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8 |
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9 struct Array; |
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10 |
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11 namespace opts { |
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12 namespace cl = llvm::cl; |
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13 |
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14 /// Helper class for fancier options |
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15 class FlagParser : public cl::parser<bool> { |
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16 std::vector<std::pair<std::string, bool> > switches; |
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17 public: |
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18 template <class Opt> |
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19 void initialize(Opt &O) { |
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20 std::string Name = O.ArgStr; |
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21 switches.push_back(make_pair("enable-" + Name, true)); |
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22 switches.push_back(make_pair("disable-" + Name, false)); |
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23 // Replace <foo> with -enable-<foo> |
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24 O.ArgStr = switches[0].first.c_str(); |
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25 } |
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26 |
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27 bool parse(cl::Option &O, const char *ArgName, const std::string &ArgValue, bool &Val); |
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28 |
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29 void getExtraOptionNames(std::vector<const char*> &Names); |
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30 }; |
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31 |
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32 /// Helper class for options that set multiple flags |
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33 class MultiSetter { |
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34 std::vector<bool*> locations; |
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35 bool invert; |
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36 MultiSetter(bool); //not implemented, disable auto-conversion |
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37 public: |
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38 MultiSetter(bool invert, bool* p, ...) END_WITH_NULL; |
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39 |
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40 void operator=(bool val); |
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41 }; |
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42 |
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43 /// Helper class to fill Array with char* when given strings |
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44 /// (Errors on empty strings) |
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45 class ArrayAdapter { |
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46 const char* name; |
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47 Array** arrp; |
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48 public: |
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49 ArrayAdapter(const char* name_, Array*& arr) { |
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50 name = name_; |
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51 arrp = &arr; |
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52 assert(name); |
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53 assert(arrp); |
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54 } |
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55 |
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56 void push_back(const char* cstr); |
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57 |
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58 void push_back(const std::string& str) { |
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59 push_back(str.c_str()); |
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60 } |
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61 }; |
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62 |
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63 /// Helper class to allow use of a parser<bool> with BoolOrDefault |
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64 class BoolOrDefaultAdapter { |
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65 cl::boolOrDefault value; |
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66 public: |
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67 operator cl::boolOrDefault() { |
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68 return value; |
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69 } |
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70 |
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71 void operator=(cl::boolOrDefault val) { |
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72 value = val; |
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73 } |
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74 |
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75 void operator=(bool val) { |
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76 *this = (val ? cl::BOU_TRUE : cl::BOU_FALSE); |
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77 } |
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78 }; |
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79 } |
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80 |
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81 #endif |