Mercurial > projects > ldc
view gen/dvalue.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> |
---|---|
date | Thu, 21 May 2009 15:23:28 +0200 |
parents | a5bfed1f6775 |
children |
line wrap: on
line source
#ifndef LDC_GEN_DVALUE_H #define LDC_GEN_DVALUE_H /* These classes are used for generating the IR. They encapsulate D values and provide a common interface to the most common operations. When more specialized handling is necessary, they hold enough information to do-the-right-thing (TM) */ #include <cassert> #include "root.h" struct Type; struct Dsymbol; struct VarDeclaration; struct FuncDeclaration; namespace llvm { class Value; class Type; class Constant; } struct DImValue; struct DConstValue; struct DNullValue; struct DVarValue; struct DFieldValue; struct DFuncValue; struct DSliceValue; // base class for d-values struct DValue : Object { Type* type; DValue(Type* ty) : type(ty) {} Type*& getType() { assert(type); return type; } virtual llvm::Value* getLVal() { assert(0); return 0; } virtual llvm::Value* getRVal() { assert(0); return 0; } virtual bool isLVal() { return false; } virtual DImValue* isIm() { return NULL; } virtual DConstValue* isConst() { return NULL; } virtual DNullValue* isNull() { return NULL; } virtual DVarValue* isVar() { return NULL; } virtual DFieldValue* isField() { return NULL; } virtual DSliceValue* isSlice() { return NULL; } virtual DFuncValue* isFunc() { return NULL; } protected: DValue() {} DValue(const DValue&) { } DValue& operator=(const DValue& other) { type = other.type; return *this; } }; // immediate d-value struct DImValue : DValue { llvm::Value* val; DImValue(Type* t, llvm::Value* v) : DValue(t), val(v) { } virtual llvm::Value* getRVal() { assert(val); return val; } virtual DImValue* isIm() { return this; } }; // constant d-value struct DConstValue : DValue { llvm::Constant* c; DConstValue(Type* t, llvm::Constant* con) : DValue(t), c(con) {} virtual llvm::Value* getRVal(); virtual DConstValue* isConst() { return this; } }; // null d-value struct DNullValue : DConstValue { DNullValue(Type* t, llvm::Constant* con) : DConstValue(t,con) {} virtual DNullValue* isNull() { return this; } }; // variable d-value struct DVarValue : DValue { VarDeclaration* var; llvm::Value* val; DVarValue(Type* t, VarDeclaration* vd, llvm::Value* llvmValue); DVarValue(Type* t, llvm::Value* llvmValue); virtual bool isLVal() { return true; } virtual llvm::Value* getLVal(); virtual llvm::Value* getRVal(); virtual DVarValue* isVar() { return this; } }; // field d-value struct DFieldValue : DVarValue { DFieldValue(Type* t, llvm::Value* llvmValue) : DVarValue(t, llvmValue) {} virtual DFieldValue* isField() { return this; } }; // slice d-value struct DSliceValue : DValue { llvm::Value* len; llvm::Value* ptr; DSliceValue(Type* t, llvm::Value* l, llvm::Value* p) : DValue(t), len(l), ptr(p) {} virtual llvm::Value* getRVal(); virtual DSliceValue* isSlice() { return this; } }; // function d-value struct DFuncValue : DValue { FuncDeclaration* func; llvm::Value* val; llvm::Value* vthis; DFuncValue(FuncDeclaration* fd, llvm::Value* v, llvm::Value* vt = 0); virtual llvm::Value* getRVal(); virtual DFuncValue* isFunc() { return this; } }; #endif // LDC_GEN_DVALUE_H