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view gen/structs.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> |
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date | Sat, 06 Jun 2009 20:16:13 +0200 |
parents | 45aca7e7cc88 |
children |
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#ifndef LLVMD_GEN_STRUCTS_H #define LLVMD_GEN_STRUCTS_H struct StructInitializer; /// Generate code for the struct. void DtoResolveStruct(StructDeclaration* sd); /// Build constant struct initializer. LLConstant* DtoConstStructInitializer(StructInitializer* si); /// Build values for a struct literal. std::vector<llvm::Value*> DtoStructLiteralValues(const StructDeclaration* sd, const std::vector<llvm::Value*>& inits); /// Returns a boolean=true if the two structs are equal. LLValue* DtoStructEquals(TOK op, DValue* lhs, DValue* rhs); /// index a struct one level LLValue* DtoIndexStruct(LLValue* src, StructDeclaration* sd, VarDeclaration* vd); /// Return the type returned by DtoUnpaddedStruct called on a value of the /// specified type. /// Union types will get expanded into a struct, with a type for each member. LLType* DtoUnpaddedStructType(Type* dty); /// Return the struct value represented by v without the padding fields. /// Unions will be expanded, with a value for each member. /// Note: v must be a pointer to a struct, but the return value will be a /// first-class struct value. LLValue* DtoUnpaddedStruct(Type* dty, LLValue* v); /// Undo the transformation performed by DtoUnpaddedStruct, writing to lval. void DtoPaddedStruct(Type* dty, LLValue* v, LLValue* lval); #endif