Vendor import of llvm trunk r256633:

https://llvm.org/svn/llvm-project/llvm/trunk@256633

1 files changed, 156 insertions, 0 deletions

diff --git a/utils/TableGen/Attributes.cpp b/utils/TableGen/Attributes.cpp
new file mode 100644
index 000000000000..7b001bf14de5
--- /dev/null
+++ b/utils/TableGen/Attributes.cpp
@@ -0,0 +1,156 @@
+//===- Attributes.cpp - Generate attributes -------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+#include <algorithm>
+#include <string>
+#include <vector>
+using namespace llvm;
+
+#define DEBUG_TYPE "attr-enum"
+
+namespace {
+
+class Attributes {
+public:
+  Attributes(RecordKeeper &R) : Records(R) {}
+  void emit(raw_ostream &OS);
+
+private:
+  void emitTargetIndependentEnums(raw_ostream &OS);
+  void emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr);
+
+  void printEnumAttrClasses(raw_ostream &OS,
+                            const std::vector<Record *> &Records);
+  void printStrBoolAttrClasses(raw_ostream &OS,
+                               const std::vector<Record *> &Records);
+
+  RecordKeeper &Records;
+};
+
+} // End anonymous namespace.
+
+void Attributes::emitTargetIndependentEnums(raw_ostream &OS) {
+  OS << "#ifdef GET_ATTR_ENUM\n";
+  OS << "#undef GET_ATTR_ENUM\n";
+
+  std::vector<Record*> Attrs =
+      Records.getAllDerivedDefinitions("EnumAttr");
+
+  for (auto A : Attrs)
+    OS << A->getName() << ",\n";
+
+  OS << "#endif\n";
+}
+
+void Attributes::emitFnAttrCompatCheck(raw_ostream &OS, bool IsStringAttr) {
+  OS << "#ifdef GET_ATTR_COMPAT_FUNC\n";
+  OS << "#undef GET_ATTR_COMPAT_FUNC\n";
+
+  OS << "struct EnumAttr {\n";
+  OS << "  static bool isSet(const Function &Fn,\n";
+  OS << "                    Attribute::AttrKind Kind) {\n";
+  OS << "    return Fn.hasFnAttribute(Kind);\n";
+  OS << "  }\n\n";
+  OS << "  static void set(Function &Fn,\n";
+  OS << "                  Attribute::AttrKind Kind, bool Val) {\n";
+  OS << "    if (Val)\n";
+  OS << "      Fn.addFnAttr(Kind);\n";
+  OS << "    else\n";
+  OS << "      Fn.removeFnAttr(Kind);\n";
+  OS << "  }\n";
+  OS << "};\n\n";
+
+  OS << "struct StrBoolAttr {\n";
+  OS << "  static bool isSet(const Function &Fn,\n";
+  OS << "                    StringRef Kind) {\n";
+  OS << "    auto A = Fn.getFnAttribute(Kind);\n";
+  OS << "    return A.getValueAsString().equals(\"true\");\n";
+  OS << "  }\n\n";
+  OS << "  static void set(Function &Fn,\n";
+  OS << "                  StringRef Kind, bool Val) {\n";
+  OS << "    Fn.addFnAttr(Kind, Val ? \"true\" : \"false\");\n";
+  OS << "  }\n";
+  OS << "};\n\n";
+
+  printEnumAttrClasses(OS ,Records.getAllDerivedDefinitions("EnumAttr"));
+  printStrBoolAttrClasses(OS , Records.getAllDerivedDefinitions("StrBoolAttr"));
+
+  OS << "static inline bool hasCompatibleFnAttrs(const Function &Caller,\n"
+     << "                                        const Function &Callee) {\n";
+  OS << "  bool Ret = true;\n\n";
+
+  std::vector<Record *> CompatRules =
+      Records.getAllDerivedDefinitions("CompatRule");
+
+  for (auto *Rule : CompatRules) {
+    std::string FuncName = Rule->getValueAsString("CompatFunc");
+    OS << "  Ret &= " << FuncName << "(Caller, Callee);\n";
+  }
+
+  OS << "\n";
+  OS << "  return Ret;\n";
+  OS << "}\n\n";
+
+  std::vector<Record *> MergeRules =
+      Records.getAllDerivedDefinitions("MergeRule");
+  OS << "static inline void mergeFnAttrs(Function &Caller,\n"
+     << "                                const Function &Callee) {\n";
+
+  for (auto *Rule : MergeRules) {
+    std::string FuncName = Rule->getValueAsString("MergeFunc");
+    OS << "  " << FuncName << "(Caller, Callee);\n";
+  }
+
+  OS << "}\n\n";
+
+  OS << "#endif\n";
+}
+
+void Attributes::printEnumAttrClasses(raw_ostream &OS,
+                                      const std::vector<Record *> &Records) {
+  OS << "// EnumAttr classes\n";
+  for (const auto *R : Records) {
+    OS << "struct " << R->getName() << "Attr : EnumAttr {\n";
+    OS << "  static enum Attribute::AttrKind getKind() {\n";
+    OS << "    return llvm::Attribute::" << R->getName() << ";\n";
+    OS << "  }\n";
+    OS << "};\n";
+  }
+  OS << "\n";
+}
+
+void Attributes::printStrBoolAttrClasses(raw_ostream &OS,
+                                         const std::vector<Record *> &Records) {
+  OS << "// StrBoolAttr classes\n";
+  for (const auto *R : Records) {
+    OS << "struct " << R->getName() << "Attr : StrBoolAttr {\n";
+    OS << "  static const char *getKind() {\n";
+    OS << "    return \"" << R->getValueAsString("AttrString") << "\";\n";
+    OS << "  }\n";
+    OS << "};\n";
+  }
+  OS << "\n";
+}
+
+void Attributes::emit(raw_ostream &OS) {
+  emitTargetIndependentEnums(OS);
+  emitFnAttrCompatCheck(OS, false);
+}
+
+namespace llvm {
+
+void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
+  Attributes(RK).emit(OS);
+}
+
+} // End llvm namespace.