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https://github.com/c64scene-ar/llvm-6502.git
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ed84062812
isa<> et al. automatically infer when the cast is an upcast (including a self-cast), so these are no longer necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165767 91177308-0d34-0410-b5e6-96231b3b80d8
109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
//===-- llvm/CodeGen/PseudoSourceValue.h ------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the PseudoSourceValue class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_PSEUDOSOURCEVALUE_H
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#define LLVM_CODEGEN_PSEUDOSOURCEVALUE_H
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#include "llvm/Value.h"
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namespace llvm {
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class MachineFrameInfo;
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class raw_ostream;
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/// PseudoSourceValue - Special value supplied for machine level alias
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/// analysis. It indicates that a memory access references the functions
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/// stack frame (e.g., a spill slot), below the stack frame (e.g., argument
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/// space), or constant pool.
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class PseudoSourceValue : public Value {
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private:
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/// printCustom - Implement printing for PseudoSourceValue. This is called
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/// from Value::print or Value's operator<<.
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///
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virtual void printCustom(raw_ostream &O) const;
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public:
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explicit PseudoSourceValue(enum ValueTy Subclass = PseudoSourceValueVal);
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/// isConstant - Test whether the memory pointed to by this
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/// PseudoSourceValue has a constant value.
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///
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virtual bool isConstant(const MachineFrameInfo *) const;
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/// isAliased - Test whether the memory pointed to by this
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/// PseudoSourceValue may also be pointed to by an LLVM IR Value.
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virtual bool isAliased(const MachineFrameInfo *) const;
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/// mayAlias - Return true if the memory pointed to by this
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/// PseudoSourceValue can ever alias a LLVM IR Value.
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virtual bool mayAlias(const MachineFrameInfo *) const;
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/// classof - Methods for support type inquiry through isa, cast, and
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/// dyn_cast:
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///
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static inline bool classof(const Value *V) {
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return V->getValueID() == PseudoSourceValueVal ||
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V->getValueID() == FixedStackPseudoSourceValueVal;
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}
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/// A pseudo source value referencing a fixed stack frame entry,
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/// e.g., a spill slot.
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static const PseudoSourceValue *getFixedStack(int FI);
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/// A pseudo source value referencing the area below the stack frame of
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/// a function, e.g., the argument space.
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static const PseudoSourceValue *getStack();
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/// A pseudo source value referencing the global offset table
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/// (or something the like).
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static const PseudoSourceValue *getGOT();
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/// A pseudo source value referencing the constant pool. Since constant
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/// pools are constant, this doesn't need to identify a specific constant
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/// pool entry.
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static const PseudoSourceValue *getConstantPool();
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/// A pseudo source value referencing a jump table. Since jump tables are
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/// constant, this doesn't need to identify a specific jump table.
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static const PseudoSourceValue *getJumpTable();
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};
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/// FixedStackPseudoSourceValue - A specialized PseudoSourceValue
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/// for holding FixedStack values, which must include a frame
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/// index.
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class FixedStackPseudoSourceValue : public PseudoSourceValue {
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const int FI;
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public:
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explicit FixedStackPseudoSourceValue(int fi) :
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PseudoSourceValue(FixedStackPseudoSourceValueVal), FI(fi) {}
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/// classof - Methods for support type inquiry through isa, cast, and
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/// dyn_cast:
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///
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static inline bool classof(const Value *V) {
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return V->getValueID() == FixedStackPseudoSourceValueVal;
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}
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virtual bool isConstant(const MachineFrameInfo *MFI) const;
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virtual bool isAliased(const MachineFrameInfo *MFI) const;
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virtual bool mayAlias(const MachineFrameInfo *) const;
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virtual void printCustom(raw_ostream &OS) const;
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int getFrameIndex() const { return FI; }
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};
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} // End llvm namespace
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#endif
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