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d0afa02a29
For some targets, there is a circular dependency between InstPrinter and MCTargetDesc. Merging them together will fix this. For the other targets, the merging is to maintain consistency so all targets will have the same structure. llvm-svn: 360484
80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
//=--- X86MCExpr.h - X86 specific MC expression classes ---*- C++ -*-=//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes X86-specific MCExprs, i.e, registers used for
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// extended variable assignments.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H
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#define LLVM_LIB_TARGET_X86_MCTARGETDESC_X86MCEXPR_H
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#include "X86ATTInstPrinter.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/Support/ErrorHandling.h"
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namespace llvm {
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class X86MCExpr : public MCTargetExpr {
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private:
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const int64_t RegNo; // All
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explicit X86MCExpr(int64_t R) : RegNo(R) {}
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public:
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/// @name Construction
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/// @{
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static const X86MCExpr *create(int64_t RegNo, MCContext &Ctx) {
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return new (Ctx) X86MCExpr(RegNo);
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}
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/// @}
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/// @name Accessors
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/// @{
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/// getSubExpr - Get the child of this expression.
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int64_t getRegNo() const { return RegNo; }
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/// @}
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void printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const override {
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if (!MAI || MAI->getAssemblerDialect() == 0)
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OS << '%';
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OS << X86ATTInstPrinter::getRegisterName(RegNo);
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}
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bool evaluateAsRelocatableImpl(MCValue &Res, const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override {
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return false;
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}
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// Register values should be inlined as they are not valid .set expressions.
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bool inlineAssignedExpr() const override { return true; }
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bool isEqualTo(const MCExpr *X) const override {
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if (auto *E = dyn_cast<X86MCExpr>(X))
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return getRegNo() == E->getRegNo();
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return false;
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}
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void visitUsedExpr(MCStreamer &Streamer) const override{};
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MCFragment *findAssociatedFragment() const override { return nullptr; }
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// There are no TLS X86MCExprs at the moment.
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void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
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static bool classof(const MCExpr *E) {
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return E->getKind() == MCExpr::Target;
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}
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};
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} // end namespace llvm
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#endif
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