You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.3 KiB
80 lines
2.3 KiB
//=--- X86MCExpr.h - X86 specific MC expression classes ---*- C++ -*-=//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file describes X86-specific MCExprs, i.e, registers used for
|
|
// extended variable assignments.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H
|
|
#define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H
|
|
|
|
#include "X86ATTInstPrinter.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
|
|
namespace llvm {
|
|
|
|
class X86MCExpr : public MCTargetExpr {
|
|
|
|
private:
|
|
const int64_t RegNo; // All
|
|
|
|
explicit X86MCExpr(int64_t R) : RegNo(R) {}
|
|
|
|
public:
|
|
/// @name Construction
|
|
/// @{
|
|
|
|
static const X86MCExpr *create(int64_t RegNo, MCContext &Ctx) {
|
|
return new (Ctx) X86MCExpr(RegNo);
|
|
}
|
|
|
|
/// @}
|
|
/// @name Accessors
|
|
/// @{
|
|
|
|
/// getSubExpr - Get the child of this expression.
|
|
int64_t getRegNo() const { return RegNo; }
|
|
|
|
/// @}
|
|
|
|
void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override {
|
|
if (!MAI || MAI->getAssemblerDialect() == 0)
|
|
OS << '%';
|
|
OS << X86ATTInstPrinter::getRegisterName(RegNo);
|
|
}
|
|
|
|
bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
|
|
const MCFixup *Fixup) const override {
|
|
return false;
|
|
}
|
|
// Register values should be inlined as they are not valid .set expressions.
|
|
bool inlineAssignedExpr() const override { return true; }
|
|
bool isEqualTo(const MCExpr *X) const override {
|
|
if (auto *E = dyn_cast<X86MCExpr>(X))
|
|
return getRegNo() == E->getRegNo();
|
|
return false;
|
|
}
|
|
void visitUsedExpr(MCStreamer &Streamer) const override{};
|
|
MCFragment *findAssociatedFragment() const override { return nullptr; }
|
|
|
|
// There are no TLS X86MCExprs at the moment.
|
|
void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
|
|
|
|
static bool classof(const MCExpr *E) {
|
|
return E->getKind() == MCExpr::Target;
|
|
}
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|