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https://github.com/c64scene-ar/llvm-6502.git
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7521964d28
This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237936 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
//===-- MipsMCExpr.h - Mips specific MC expression classes ------*- 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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#ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSMCEXPR_H
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#define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSMCEXPR_H
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#include "llvm/MC/MCAsmLayout.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCValue.h"
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namespace llvm {
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class MipsMCExpr : public MCTargetExpr {
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public:
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enum VariantKind {
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VK_Mips_None,
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VK_Mips_LO,
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VK_Mips_HI,
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VK_Mips_HIGHER,
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VK_Mips_HIGHEST
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};
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private:
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const VariantKind Kind;
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const MCExpr *Expr;
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explicit MipsMCExpr(VariantKind Kind, const MCExpr *Expr)
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: Kind(Kind), Expr(Expr) {}
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public:
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static bool isSupportedBinaryExpr(MCSymbolRefExpr::VariantKind VK,
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const MCBinaryExpr *BE);
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static const MipsMCExpr *Create(MCSymbolRefExpr::VariantKind VK,
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const MCExpr *Expr, MCContext &Ctx);
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/// getOpcode - Get the kind of this expression.
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VariantKind getKind() const { return Kind; }
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/// getSubExpr - Get the child of this expression.
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const MCExpr *getSubExpr() const { return Expr; }
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void PrintImpl(raw_ostream &OS) const override;
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bool EvaluateAsRelocatableImpl(MCValue &Res,
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const MCAsmLayout *Layout,
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const MCFixup *Fixup) const override;
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void visitUsedExpr(MCStreamer &Streamer) const override;
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MCSection *FindAssociatedSection() const override {
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return getSubExpr()->FindAssociatedSection();
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}
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// There are no TLS MipsMCExprs 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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