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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
101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
//===-- PPCMCExpr.h - PPC 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_POWERPC_MCTARGETDESC_PPCMCEXPR_H
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#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCEXPR_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 PPCMCExpr : public MCTargetExpr {
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public:
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enum VariantKind {
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VK_PPC_None,
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VK_PPC_LO,
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VK_PPC_HI,
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VK_PPC_HA,
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VK_PPC_HIGHER,
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VK_PPC_HIGHERA,
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VK_PPC_HIGHEST,
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VK_PPC_HIGHESTA
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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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bool IsDarwin;
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int64_t EvaluateAsInt64(int64_t Value) const;
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explicit PPCMCExpr(VariantKind Kind, const MCExpr *Expr, bool IsDarwin)
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: Kind(Kind), Expr(Expr), IsDarwin(IsDarwin) {}
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public:
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/// @name Construction
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/// @{
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static const PPCMCExpr *Create(VariantKind Kind, const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx);
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static const PPCMCExpr *CreateLo(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return Create(VK_PPC_LO, Expr, isDarwin, Ctx);
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}
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static const PPCMCExpr *CreateHi(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return Create(VK_PPC_HI, Expr, isDarwin, Ctx);
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}
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static const PPCMCExpr *CreateHa(const MCExpr *Expr,
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bool isDarwin, MCContext &Ctx) {
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return Create(VK_PPC_HA, Expr, isDarwin, Ctx);
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}
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/// @}
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/// @name Accessors
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/// @{
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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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/// isDarwinSyntax - True if expression is to be printed using Darwin syntax.
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bool isDarwinSyntax() const { return IsDarwin; }
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/// @}
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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 PPCMCExprs at the moment.
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void fixELFSymbolsInTLSFixups(MCAssembler &Asm) const override {}
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bool EvaluateAsConstant(int64_t &Res) const;
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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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