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view gen/cl_helpers.h @ 1479:4f7d50c744ed
Rewrite `StructLiteralExp::toElem` to store individual fields instead of
generating a constant to fill the entire struct with a single `store`.
This is much more efficient at compile time (fixing #320) and vastly reduces
the size of the emitted code. Since LLVM no longer needs to keep the data for
all fields in "registers" until the store happens, it should also be more
efficient at run time in cases where the fields aren't assigned with constants.
There's also some code clean-up by removing duplicated logic.
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Sat, 06 Jun 2009 20:16:13 +0200 |
parents | 3171f67ad006 |
children | 40bd4a0d4870 |
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#ifndef LDC_CL_HELPERS_H #define LDC_CL_HELPERS_H #include <string> #include "llvm/Support/CommandLine.h" #include "llvm/Support/Compiler.h" struct Array; namespace opts { namespace cl = llvm::cl; /// Helper class for fancier options class FlagParser : public cl::parser<bool> { std::vector<std::pair<std::string, bool> > switches; public: template <class Opt> void initialize(Opt &O) { std::string Name = O.ArgStr; switches.push_back(make_pair("enable-" + Name, true)); switches.push_back(make_pair("disable-" + Name, false)); // Replace <foo> with -enable-<foo> O.ArgStr = switches[0].first.c_str(); } bool parse(cl::Option &O, const char *ArgName, const std::string &ArgValue, bool &Val); void getExtraOptionNames(std::vector<const char*> &Names); }; /// Helper class for options that set multiple flags class MultiSetter { std::vector<bool*> locations; bool invert; MultiSetter(bool); //not implemented, disable auto-conversion public: MultiSetter(bool invert, bool* p, ...) END_WITH_NULL; void operator=(bool val); }; /// Helper class to fill Array with char* when given strings /// (Errors on empty strings) class ArrayAdapter { const char* name; Array** arrp; public: ArrayAdapter(const char* name_, Array*& arr) { name = name_; arrp = &arr; assert(name); assert(arrp); } void push_back(const char* cstr); void push_back(const std::string& str) { push_back(str.c_str()); } }; /// Helper class to allow use of a parser<bool> with BoolOrDefault class BoolOrDefaultAdapter { cl::boolOrDefault value; public: operator cl::boolOrDefault() { return value; } void operator=(cl::boolOrDefault val) { value = val; } void operator=(bool val) { *this = (val ? cl::BOU_TRUE : cl::BOU_FALSE); } }; } #endif