Move the enum attributes defined in Attributes.h to a table-gen file.

This is a step towards consolidating some of the information regarding
attributes in a single place.

This patch moves the enum attributes in Attributes.h to the table-gen
file. Additionally, it adds definitions of target independent string
attributes that will be used in follow-up commits by the inliner to
check attribute compatibility.

rdar://problem/19836465

llvm-svn: 252796

4 files changed, 68 insertions, 1 deletions

diff --git a/llvm/utils/TableGen/Attributes.cpp b/llvm/utils/TableGen/Attributes.cpp
new file mode 100644
index 00000000000..385a244d74d
--- /dev/null
+++ b/llvm/utils/TableGen/Attributes.cpp
@@ -0,0 +1,59 @@
+//===- 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);
+
+  RecordKeeper &Records;
+};
+
+} // End anonymous namespace.
+
+void Attributes::emitTargetIndependentEnums(raw_ostream &OS) {
+  OS << "#ifdef GET_ATTR_ENUM\n";
+  OS << "#undef GET_ATTR_ENUM\n";
+
+  const std::vector<Record*> &Attrs =
+      Records.getAllDerivedDefinitions("EnumAttr");
+
+  for (auto A : Attrs)
+    OS << A->getName() << ",\n";
+
+  OS << "#endif\n";
+}
+
+void Attributes::emit(raw_ostream &OS) {
+  emitTargetIndependentEnums(OS);
+}
+
+namespace llvm {
+
+void EmitAttributes(RecordKeeper &RK, raw_ostream &OS) {
+  Attributes(RK).emit(OS);
+}
+
+} // End llvm namespace.
diff --git a/llvm/utils/TableGen/CMakeLists.txt b/llvm/utils/TableGen/CMakeLists.txt
index feaa7c75796..eef1540424d 100644
--- a/llvm/utils/TableGen/CMakeLists.txt
+++ b/llvm/utils/TableGen/CMakeLists.txt
@@ -4,6 +4,7 @@ add_tablegen(llvm-tblgen LLVM
   AsmMatcherEmitter.cpp
   AsmWriterEmitter.cpp
   AsmWriterInst.cpp
+  Attributes.cpp
   CallingConvEmitter.cpp
   CodeEmitterGen.cpp
   CodeGenDAGPatterns.cpp
diff --git a/llvm/utils/TableGen/TableGen.cpp b/llvm/utils/TableGen/TableGen.cpp
index 02fe4dc98be..c16a5583eb3 100644
--- a/llvm/utils/TableGen/TableGen.cpp
+++ b/llvm/utils/TableGen/TableGen.cpp
@@ -41,7 +41,8 @@ enum ActionType {
   PrintEnums,
   PrintSets,
   GenOptParserDefs,
-  GenCTags
+  GenCTags,
+  GenAttributes
 };
 
 namespace {
@@ -85,6 +86,8 @@ namespace {
                                "Generate option definitions"),
                     clEnumValN(GenCTags, "gen-ctags",
                                "Generate ctags-compatible index"),
+                    clEnumValN(GenAttributes, "gen-attrs",
+                               "Generate attributes"),
                     clEnumValEnd));
 
   cl::opt<std::string>
@@ -165,6 +168,9 @@ bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
   case GenCTags:
     EmitCTags(Records, OS);
     break;
+  case GenAttributes:
+    EmitAttributes(Records, OS);
+    break;
   }
 
   return false;
diff --git a/llvm/utils/TableGen/TableGenBackends.h b/llvm/utils/TableGen/TableGenBackends.h
index 2dc03ce1e71..d9dd3d15769 100644
--- a/llvm/utils/TableGen/TableGenBackends.h
+++ b/llvm/utils/TableGen/TableGenBackends.h
@@ -78,6 +78,7 @@ void EmitSubtarget(RecordKeeper &RK, raw_ostream &OS);
 void EmitMapTable(RecordKeeper &RK, raw_ostream &OS);
 void EmitOptParser(RecordKeeper &RK, raw_ostream &OS);
 void EmitCTags(RecordKeeper &RK, raw_ostream &OS);
+void EmitAttributes(RecordKeeper &RK, raw_ostream &OS);
 
 } // End llvm namespace