view ir/irvar.h @ 1486:9ed0695cb93c

Teach `-dgc2stack` to promote GC allocations in simple loops to stack allocations too. (A "simple" loop is one where the allocation isn't used in a subsequent iteration) This also means it's no longer necessary to run this pass multiple times. Running it once after inlining should now catch all cases.
author Frits van Bommel <fvbommel wxs.nl>
date Mon, 08 Jun 2009 12:35:55 +0200
parents 0c03ba6f7c24
children
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#ifndef LDC_IR_IRVAR_H
#define LDC_IR_IRVAR_H

#include "ir/ir.h"
#include "llvm/Type.h"

struct IrVar : IrBase
{
    IrVar(VarDeclaration* var);

    VarDeclaration* V;
    llvm::Value* value;
};

// represents a global variable
struct IrGlobal : IrVar
{
    IrGlobal(VarDeclaration* v);

    llvm::PATypeHolder type;
    llvm::Constant* constInit;
};

// represents a local variable variable
struct IrLocal : IrVar
{
    IrLocal(VarDeclaration* v);

    bool byref;         // Not used for -nested-ctx=array
    int nestedDepth;    // ditto
    int nestedIndex;
};

// represents an aggregate field variable
struct IrField : IrVar
{
    IrField(VarDeclaration* v);

    unsigned index;
    unsigned unionOffset;

    llvm::Constant* getDefaultInit();

protected:
    /// FIXME: only used for StructLiteralsExps
    llvm::Constant* constInit;
};

#endif