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Chris Lattner4a24c642005-09-03 01:14:03 +00001//===- DAGISelEmitter.h - Generate an instruction selector ------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner30609102007-12-29 20:37:13 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Chris Lattner4a24c642005-09-03 01:14:03 +00007//
8//===----------------------------------------------------------------------===//
9//
10// This tablegen backend emits a DAG instruction selector.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef DAGISEL_EMITTER_H
15#define DAGISEL_EMITTER_H
16
Dan Gohmanee4fa192008-04-03 00:02:49 +000017#include "TableGenBackend.h"
Chris Lattner6cefb772008-01-05 22:25:12 +000018#include "CodeGenDAGPatterns.h"
Evan Cheng21ad3922006-02-07 00:37:41 +000019#include <set>
Chris Lattner4a24c642005-09-03 01:14:03 +000020
21namespace llvm {
Evan Cheng58e84a62005-12-14 22:02:59 +000022
Chris Lattner09fb7d42006-01-17 21:31:18 +000023/// DAGISelEmitter - The top-level class which coordinates construction
Chris Lattner4a24c642005-09-03 01:14:03 +000024/// and emission of the instruction selector.
25///
26class DAGISelEmitter : public TableGenBackend {
27 RecordKeeper &Records;
Chris Lattnerfe718932008-01-06 01:10:31 +000028 CodeGenDAGPatterns CGP;
Chris Lattner4a24c642005-09-03 01:14:03 +000029public:
Dan Gohman38deef92009-02-18 16:37:45 +000030 explicit DAGISelEmitter(RecordKeeper &R) : Records(R), CGP(R) {}
Chris Lattner4a24c642005-09-03 01:14:03 +000031
32 // run - Output the isel, returning true on failure.
Daniel Dunbar1a551802009-07-03 00:10:29 +000033 void run(raw_ostream &OS);
Chris Lattnerca559d02005-09-08 21:03:01 +000034
Chris Lattner5a1df382006-03-24 23:10:39 +000035
Chris Lattner54cb8fd2005-09-07 23:44:43 +000036private:
Daniel Dunbar1a551802009-07-03 00:10:29 +000037 void EmitNodeTransforms(raw_ostream &OS);
38 void EmitPredicateFunctions(raw_ostream &OS);
Chris Lattnerdc32f982008-01-05 22:43:57 +000039
Chris Lattner60d81392008-01-05 22:30:17 +000040 void GenerateCodeForPattern(const PatternToMatch &Pattern,
Evan Cheng676d7312006-08-26 00:59:04 +000041 std::vector<std::pair<unsigned, std::string> > &GeneratedCode,
Evan Chengf5493192006-08-26 01:02:19 +000042 std::set<std::string> &GeneratedDecl,
Evan Chengfceb57a2006-07-15 08:45:20 +000043 std::vector<std::string> &TargetOpcodes,
Dan Gohmane4c67cd2008-05-31 02:11:25 +000044 std::vector<std::string> &TargetVTs,
45 bool &OutputIsVariadic,
46 unsigned &NumInputRootOps);
Chris Lattner60d81392008-01-05 22:30:17 +000047 void EmitPatterns(std::vector<std::pair<const PatternToMatch*,
Evan Cheng676d7312006-08-26 00:59:04 +000048 std::vector<std::pair<unsigned, std::string> > > > &Patterns,
Daniel Dunbar1a551802009-07-03 00:10:29 +000049 unsigned Indent, raw_ostream &OS);
Chris Lattnerdc32f982008-01-05 22:43:57 +000050
Daniel Dunbar1a551802009-07-03 00:10:29 +000051 void EmitInstructionSelector(raw_ostream &OS);
Chris Lattner4a24c642005-09-03 01:14:03 +000052};
53
54} // End llvm namespace
55
56#endif