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view gen/dvalue.h @ 1351:8d501abecd24
Initial (but disabled) fix for ticket #294 , the actual part that fixes the bug is in a #if 0 block as I'm afraid it will cause regressions. I'm most likely not going to be around tonight, and maybe not tomorrow as well, so I'm pushing it in case someone wants to run some serious testing/investigate the problem noted in llvmhelpers.cpp : realignOffset .
author | Tomas Lindquist Olsen <tomas.l.olsen gmail com> |
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date | Thu, 14 May 2009 17:20:17 +0200 |
parents | a5bfed1f6775 |
children |
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#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