[llvm-commits] CVS: llvm/utils/TableGen/RegisterInfoEmitter.h RegisterInfoEmitter.cpp

[Chris Lattner]

Changes in directory llvm/utils/TableGen:

RegisterInfoEmitter.h added (r1.1)
RegisterInfoEmitter.cpp added (r1.1)

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Log message:

Initial checkin of register info emitter


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Diffs of the changes:

Index: llvm/utils/TableGen/RegisterInfoEmitter.h
diff -c /dev/null llvm/utils/TableGen/RegisterInfoEmitter.h:1.1
*** /dev/null	Thu Jul 31 23:39:18 2003
--- llvm/utils/TableGen/RegisterInfoEmitter.h	Thu Jul 31 23:38:38 2003
***************
*** 0 ****
--- 1,28 ----
+ //===- RegisterInfoEmitter.h - Generate a Register File Desc. ---*- C++ -*-===//
+ //
+ // This tablegen backend is responsible for emitting a description of a target
+ // register file for a code generator.  It uses instances of the Register,
+ // RegisterAliases, and RegisterClass classes to gather this information.
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ #ifndef REGISTER_INFO_EMITTER_H
+ #define REGISTER_INFO_EMITTER_H
+ 
+ #include <iosfwd>
+ class RecordKeeper;
+ 
+ class RegisterInfoEmitter {
+   RecordKeeper &Records;
+ public:
+   RegisterInfoEmitter(RecordKeeper &R) : Records(R) {}
+   
+   // run - Output the register file description, returning true on failure.
+   void run(std::ostream &o);
+ 
+   // runHeader - Emit a header fragment for the register info emitter.
+   void runHeader(std::ostream &o);
+ private:
+ };
+ 
+ #endif


Index: llvm/utils/TableGen/RegisterInfoEmitter.cpp
diff -c /dev/null llvm/utils/TableGen/RegisterInfoEmitter.cpp:1.1
*** /dev/null	Thu Jul 31 23:39:18 2003
--- llvm/utils/TableGen/RegisterInfoEmitter.cpp	Thu Jul 31 23:38:38 2003
***************
*** 0 ****
--- 1,40 ----
+ //===- RegisterInfoEmitter.cpp - Generate a Register File Desc. -*- C++ -*-===//
+ //
+ // This tablegen backend is responsible for emitting a description of a target
+ // register file for a code generator.  It uses instances of the Register,
+ // RegisterAliases, and RegisterClass classes to gather this information.
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ #include "RegisterInfoEmitter.h"
+ #include "Record.h"
+ 
+ static void EmitSourceHeader(const std::string &Desc, std::ostream &o) {
+   o << "//===- TableGen'erated file -------------------------------------*-"
+        " C++ -*-===//\n//\n// " << Desc << "\n//\n// Automatically generate"
+        "d file, do not edit!\n//\n//===------------------------------------"
+        "----------------------------------===//\n\n";
+ }
+ 
+ void RegisterInfoEmitter::runHeader(std::ostream &OS) {
+   std::vector<Record*> RegisterInfos =
+     Records.getAllDerivedDefinitions("RegisterInfo");
+ 
+   if (RegisterInfos.size() != 1)
+     throw std::string("ERROR: Multiple subclasses of RegisterInfo defined!");
+ 
+   EmitSourceHeader("Register Information Header Fragment", OS);
+ 
+   std::string ClassName = RegisterInfos[0]->getValueAsString("ClassName");
+ 
+   OS << "#include \"llvm/CodeGen/MRegisterInfo.h\"\n\n";
+ 
+   OS << "struct " << ClassName << ": public MRegisterInfo {\n"
+      << "  " << ClassName << "();\n"
+      << "  const unsigned* getCalleeSaveRegs() const;\n"
+      << "};\n\n";
+ }
+ 
+ void RegisterInfoEmitter::run(std::ostream &o) {
+ 
+ }