llvm-6502/utils/TableGen/DAGISelMatcher.cpp
Chris Lattner da272d1a70 Check in the first big step of rewriting DAGISelEmitter to
produce a table based matcher instead of gobs of C++ Code.

Though it's not done yet, the shrinkage seems promising,
the table for the X86 ISel is 75K and still has a lot of 
optimization to come (compare to the ~1.5M of .o generated
the old way, much of which will go away).

The code is currently disabled by default (the #if 0 in
DAGISelEmitter.cpp).  When enabled it generates a dead
SelectCode2 function in the DAGISel Header which will
eventually replace SelectCode.

There is still a lot of stuff left to do, which are
documented with a trail of FIXMEs.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96215 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 08:04:42 +00:00

109 lines
3.4 KiB
C++

//===- DAGISelMatcher.cpp - Representation of DAG pattern matcher ---------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "DAGISelMatcher.h"
#include "CodeGenDAGPatterns.h"
#include "CodeGenTarget.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
void MatcherNode::dump() const {
print(errs());
}
void EmitNodeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "EmitNode: Src = " << *Pattern.getSrcPattern() << "\n";
OS.indent(indent) << "EmitNode: Dst = " << *Pattern.getDstPattern() << "\n";
}
void MatcherNodeWithChild::printChild(raw_ostream &OS, unsigned indent) const {
if (Child)
return Child->print(OS, indent);
OS.indent(indent) << "<null child>\n";
}
void PushMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "Push\n";
printChild(OS, indent+2);
Failure->print(OS, indent);
}
void RecordMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "Record\n";
printChild(OS, indent);
}
void MoveChildMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "MoveChild " << ChildNo << '\n';
printChild(OS, indent);
}
void MoveParentMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "MoveParent\n";
printChild(OS, indent);
}
void CheckSameMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckSame " << MatchNumber << '\n';
printChild(OS, indent);
}
void CheckPatternPredicateMatcherNode::
print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckPatternPredicate " << Predicate << '\n';
printChild(OS, indent);
}
void CheckPredicateMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckPredicate " << PredName << '\n';
printChild(OS, indent);
}
void CheckOpcodeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckOpcode " << OpcodeName << '\n';
printChild(OS, indent);
}
void CheckTypeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckType " << getEnumName(Type) << '\n';
printChild(OS, indent);
}
void CheckIntegerMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckInteger " << Value << '\n';
printChild(OS, indent);
}
void CheckCondCodeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckCondCode ISD::" << CondCodeName << '\n';
printChild(OS, indent);
}
void CheckValueTypeMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckValueType MVT::" << TypeName << '\n';
printChild(OS, indent);
}
void CheckComplexPatMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckComplexPat " << Pattern.getSelectFunc() << '\n';
printChild(OS, indent);
}
void CheckAndImmMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckAndImm " << Value << '\n';
printChild(OS, indent);
}
void CheckOrImmMatcherNode::print(raw_ostream &OS, unsigned indent) const {
OS.indent(indent) << "CheckOrImm " << Value << '\n';
printChild(OS, indent);
}