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495f2550b0
Continuing from D105763, this allows placing certain properties about attributes in the TableGen definition. In particular, we store whether an attribute applies to fn/param/ret (or a combination thereof). This information is used by the Verifier, as well as the ForceFunctionAttrs pass. I also plan to use this in LLParser, which also duplicates info on which attributes are valid where. This keeps metadata about attributes in one place, and makes it more likely that it stays in sync, rather than in various functions spread across the codebase. Differential Revision: https://reviews.llvm.org/D105780
142 lines
4.2 KiB
C++
142 lines
4.2 KiB
C++
//===- Attributes.cpp - Generate attributes -------------------------------===//
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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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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/TableGen/Record.h"
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#include <algorithm>
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#include <string>
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#include <vector>
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using namespace llvm;
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#define DEBUG_TYPE "attr-enum"
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namespace {
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class Attributes {
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public:
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Attributes(RecordKeeper &R) : Records(R) {}
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void emit(raw_ostream &OS);
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private:
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void emitTargetIndependentNames(raw_ostream &OS);
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void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
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void emitAttributeProperties(raw_ostream &OF);
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RecordKeeper &Records;
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};
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} // End anonymous namespace.
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void Attributes::emitTargetIndependentNames(raw_ostream &OS) {
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OS << "#ifdef GET_ATTR_NAMES\n";
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OS << "#undef GET_ATTR_NAMES\n";
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OS << "#ifndef ATTRIBUTE_ALL\n";
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OS << "#define ATTRIBUTE_ALL(FIRST, SECOND)\n";
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OS << "#endif\n\n";
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auto Emit = [&](ArrayRef<StringRef> KindNames, StringRef MacroName) {
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OS << "#ifndef " << MacroName << "\n";
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OS << "#define " << MacroName
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<< "(FIRST, SECOND) ATTRIBUTE_ALL(FIRST, SECOND)\n";
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OS << "#endif\n\n";
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for (StringRef KindName : KindNames) {
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for (auto A : Records.getAllDerivedDefinitions(KindName)) {
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OS << MacroName << "(" << A->getName() << ","
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<< A->getValueAsString("AttrString") << ")\n";
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}
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}
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OS << "#undef " << MacroName << "\n\n";
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};
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// Emit attribute enums in the same order llvm::Attribute::operator< expects.
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Emit({"EnumAttr", "TypeAttr", "IntAttr"}, "ATTRIBUTE_ENUM");
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Emit({"StrBoolAttr"}, "ATTRIBUTE_STRBOOL");
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OS << "#undef ATTRIBUTE_ALL\n";
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OS << "#endif\n\n";
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OS << "#ifdef GET_ATTR_ENUM\n";
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OS << "#undef GET_ATTR_ENUM\n";
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unsigned Value = 1; // Leave zero for AttrKind::None.
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for (StringRef KindName : {"EnumAttr", "TypeAttr", "IntAttr"}) {
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OS << "First" << KindName << " = " << Value << ",\n";
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for (auto A : Records.getAllDerivedDefinitions(KindName)) {
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OS << A->getName() << " = " << Value << ",\n";
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Value++;
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}
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OS << "Last" << KindName << " = " << (Value - 1) << ",\n";
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}
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OS << "#endif\n\n";
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}
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void Attributes::emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr) {
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OS << "#ifdef GET_ATTR_COMPAT_FUNC\n";
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OS << "#undef GET_ATTR_COMPAT_FUNC\n";
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OS << "static inline bool hasCompatibleFnAttrs(const Function &Caller,\n"
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<< " const Function &Callee) {\n";
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OS << " bool Ret = true;\n\n";
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std::vector<Record *> CompatRules =
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Records.getAllDerivedDefinitions("CompatRule");
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for (auto *Rule : CompatRules) {
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StringRef FuncName = Rule->getValueAsString("CompatFunc");
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OS << " Ret &= " << FuncName << "(Caller, Callee);\n";
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}
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OS << "\n";
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OS << " return Ret;\n";
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OS << "}\n\n";
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std::vector<Record *> MergeRules =
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Records.getAllDerivedDefinitions("MergeRule");
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OS << "static inline void mergeFnAttrs(Function &Caller,\n"
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<< " const Function &Callee) {\n";
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for (auto *Rule : MergeRules) {
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StringRef FuncName = Rule->getValueAsString("MergeFunc");
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OS << " " << FuncName << "(Caller, Callee);\n";
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}
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OS << "}\n\n";
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OS << "#endif\n";
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}
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void Attributes::emitAttributeProperties(raw_ostream &OS) {
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OS << "#ifdef GET_ATTR_PROP_TABLE\n";
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OS << "#undef GET_ATTR_PROP_TABLE\n";
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OS << "static const uint8_t AttrPropTable[] = {\n";
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for (StringRef KindName : {"EnumAttr", "TypeAttr", "IntAttr"}) {
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for (auto A : Records.getAllDerivedDefinitions(KindName)) {
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OS << "0";
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for (Init *P : *A->getValueAsListInit("Properties"))
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OS << " | AttributeProperty::" << cast<DefInit>(P)->getDef()->getName();
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OS << ",\n";
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}
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}
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OS << "};\n";
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OS << "#endif\n";
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}
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void Attributes::emit(raw_ostream &OS) {
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emitTargetIndependentNames(OS);
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emitFnAttrCompatCheck(OS, false);
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emitAttributeProperties(OS);
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}
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namespace llvm {
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void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
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Attributes(RK).emit(OS);
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}
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} // End llvm namespace.
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