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https://github.com/c64scene-ar/llvm-6502.git
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73d2cc5b8e
This commit implements serialization of the machine basic block successors. It uses a YAML flow sequence that contains strings that have the MBB references. The MBB references in those strings use the same syntax as the MBB machine operands in the machine instruction strings. Reviewers: Duncan P. N. Exon Smith Differential Revision: http://reviews.llvm.org/D10699 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241093 91177308-0d34-0410-b5e6-96231b3b80d8
150 lines
4.4 KiB
C++
150 lines
4.4 KiB
C++
//===- MIRYAMLMapping.h - Describes the mapping between MIR and YAML ------===//
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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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// The MIR serialization library is currently a work in progress. It can't
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// serialize machine functions at this time.
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//
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// This file implements the mapping between various MIR data structures and
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// their corresponding YAML representation.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_CODEGEN_MIRYAMLMAPPING_H
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#define LLVM_LIB_CODEGEN_MIRYAMLMAPPING_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/YAMLTraits.h"
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#include <vector>
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namespace llvm {
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namespace yaml {
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/// A wrapper around std::string which contains a source range that's being
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/// set during parsing.
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struct StringValue {
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std::string Value;
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SMRange SourceRange;
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StringValue() {}
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StringValue(std::string Value) : Value(std::move(Value)) {}
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bool operator==(const StringValue &Other) const {
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return Value == Other.Value;
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}
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};
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template <> struct ScalarTraits<StringValue> {
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static void output(const StringValue &S, void *, llvm::raw_ostream &OS) {
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OS << S.Value;
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}
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static StringRef input(StringRef Scalar, void *Ctx, StringValue &S) {
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S.Value = Scalar.str();
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if (const auto *Node =
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reinterpret_cast<yaml::Input *>(Ctx)->getCurrentNode())
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S.SourceRange = Node->getSourceRange();
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return "";
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}
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static bool mustQuote(StringRef Scalar) { return needsQuotes(Scalar); }
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};
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struct FlowStringValue : StringValue {
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FlowStringValue() {}
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FlowStringValue(std::string Value) : StringValue(Value) {}
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};
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template <> struct ScalarTraits<FlowStringValue> {
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static void output(const FlowStringValue &S, void *, llvm::raw_ostream &OS) {
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return ScalarTraits<StringValue>::output(S, nullptr, OS);
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}
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static StringRef input(StringRef Scalar, void *Ctx, FlowStringValue &S) {
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return ScalarTraits<StringValue>::input(Scalar, Ctx, S);
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}
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static bool mustQuote(StringRef Scalar) { return needsQuotes(Scalar); }
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};
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} // end namespace yaml
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} // end namespace llvm
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::yaml::StringValue)
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LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR(llvm::yaml::FlowStringValue)
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namespace llvm {
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namespace yaml {
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struct MachineBasicBlock {
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unsigned ID;
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std::string Name;
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unsigned Alignment = 0;
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bool IsLandingPad = false;
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bool AddressTaken = false;
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// TODO: Serialize the successor weights and liveins.
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std::vector<FlowStringValue> Successors;
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std::vector<StringValue> Instructions;
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};
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template <> struct MappingTraits<MachineBasicBlock> {
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static void mapping(IO &YamlIO, MachineBasicBlock &MBB) {
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YamlIO.mapRequired("id", MBB.ID);
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YamlIO.mapOptional("name", MBB.Name,
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std::string()); // Don't print out an empty name.
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YamlIO.mapOptional("alignment", MBB.Alignment);
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YamlIO.mapOptional("isLandingPad", MBB.IsLandingPad);
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YamlIO.mapOptional("addressTaken", MBB.AddressTaken);
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YamlIO.mapOptional("successors", MBB.Successors);
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YamlIO.mapOptional("instructions", MBB.Instructions);
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}
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};
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} // end namespace yaml
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} // end namespace llvm
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LLVM_YAML_IS_SEQUENCE_VECTOR(llvm::yaml::MachineBasicBlock)
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namespace llvm {
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namespace yaml {
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struct MachineFunction {
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StringRef Name;
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unsigned Alignment = 0;
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bool ExposesReturnsTwice = false;
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bool HasInlineAsm = false;
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// Register information
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bool IsSSA = false;
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bool TracksRegLiveness = false;
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bool TracksSubRegLiveness = false;
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// TODO: Serialize virtual register definitions.
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// TODO: Serialize the various register masks.
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// TODO: Serialize live in registers.
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std::vector<MachineBasicBlock> BasicBlocks;
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};
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template <> struct MappingTraits<MachineFunction> {
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static void mapping(IO &YamlIO, MachineFunction &MF) {
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YamlIO.mapRequired("name", MF.Name);
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YamlIO.mapOptional("alignment", MF.Alignment);
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YamlIO.mapOptional("exposesReturnsTwice", MF.ExposesReturnsTwice);
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YamlIO.mapOptional("hasInlineAsm", MF.HasInlineAsm);
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YamlIO.mapOptional("isSSA", MF.IsSSA);
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YamlIO.mapOptional("tracksRegLiveness", MF.TracksRegLiveness);
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YamlIO.mapOptional("tracksSubRegLiveness", MF.TracksSubRegLiveness);
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YamlIO.mapOptional("body", MF.BasicBlocks);
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}
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};
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} // end namespace yaml
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} // end namespace llvm
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#endif
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