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Abstracted more (most) ABI details out of the normal codegen.

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This commit is contained in:
Tomas Lindquist Olsen
2009-03-03 02:51:21 +01:00
parent 100815c097
commit 5dbe3ee8e2
11 changed files with 488 additions and 434 deletions
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61
ir/irfunction.h
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@@ -1,6 +1,7 @@
#ifndef LDC_IR_IRFUNCTION_H
#define LDC_IR_IRFUNCTION_H
#include "gen/llvm.h"
#include "ir/ir.h"
#include "ir/irlandingpad.h"
@@ -8,6 +9,66 @@
#include <stack>
#include <map>
struct ABIRewrite;
// represents a function type argument
// both explicit and implicit as well as return values
struct IrFuncTyArg : IrBase
{
Type* type;
const llvm::Type* ltype;
unsigned attrs;
bool byref;
ABIRewrite* rewrite;
bool isInReg() const { return (attrs & llvm::Attribute::InReg) != 0; }
bool isSRet() const { return (attrs & llvm::Attribute::StructRet) != 0; }
bool isByVal() const { return (attrs & llvm::Attribute::ByVal) != 0; }
IrFuncTyArg(Type* t, bool byref, unsigned a = 0);
};
// represents a function type
struct IrFuncTy : IrBase
{
// return value
IrFuncTyArg* ret;
// null if not applicable
IrFuncTyArg* arg_sret;
IrFuncTyArg* arg_this;
IrFuncTyArg* arg_nest;
IrFuncTyArg* arg_arguments;
IrFuncTyArg* arg_argptr;
// normal explicit arguments
LLSmallVector<IrFuncTyArg*, 4> args;
// C varargs
bool c_vararg;
// range of normal parameters to reverse
bool reverseParams;
IrFuncTy()
: ret(NULL),
arg_sret(NULL),
arg_this(NULL),
arg_nest(NULL),
arg_arguments(NULL),
arg_argptr(NULL),
c_vararg(false),
reverseParams(false)
{}
llvm::Value* putRet(Type* dty, llvm::Value* val);
llvm::Value* getRet(Type* dty, llvm::Value* val);
llvm::Value* getParam(Type* dty, int idx, llvm::Value* val);
llvm::Value* putParam(Type* dty, int idx, llvm::Value* val);
};
// represents a function
struct IrFunction : IrBase
{