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view ir/irtypestruct.h @ 1275:bedf0bfb8fdb
Implement first D-specific optimization pass: -simplify-drtcalls.
It uses the machinery of the standard -simplify-libcalls pass, but optimizes
calls to the D runtime instead of calls to C libraries.
At the moment, these optimizations are implemented by this pass:
- Avoid the runtime call for `arr.length = newlen` if it can determine that
the new length isn't longer than the old one.
- Ditto for `cast(T[]) arr` if it will clearly always succeed.
(e.g. if the length of the original array is zero, or if the old element
size is a multiple of the new element size)
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Tue, 28 Apr 2009 21:58:06 +0200 |
parents | dd135ff697fa |
children |
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#ifndef __LDC_IR_IRTYPESTRUCT_H__ #define __LDC_IR_IRTYPESTRUCT_H__ #include "ir/irtype.h" ////////////////////////////////////////////////////////////////////////////// struct AggregateDeclaration; struct StructDeclaration; struct TypeStruct; ////////////////////////////////////////////////////////////////////////////// class IrTypeAggr : public IrType { public: /// IrTypeAggr(AggregateDeclaration* ad); /// IrTypeAggr* isAggr() { return this; } /// typedef std::vector<VarDeclaration*>::iterator iterator; /// iterator def_begin() { return default_fields.begin(); } /// iterator def_end() { return default_fields.end(); } protected: /// AggregateDeclaration this type represents. AggregateDeclaration* aggr; /// Sorted list of all default fields. /// A default field is a field that contributes to the default initializer /// and the default type, and thus it has it's own unique GEP index into /// the aggregate. /// For classes, field of any super classes are not included. std::vector<VarDeclaration*> default_fields; }; ////////////////////////////////////////////////////////////////////////////// class IrTypeStruct : public IrTypeAggr { public: /// IrTypeStruct(StructDeclaration* sd); /// IrTypeStruct* isStruct() { return this; } /// const llvm::Type* buildType(); protected: /// StructDeclaration this type represents. StructDeclaration* sd; /// DMD TypeStruct of this type. TypeStruct* ts; }; ////////////////////////////////////////////////////////////////////////////// #endif