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llvm-mirror/utils/TableGen/CodeGenHwModes.h
Krzysztof Parzyszek f817a9b5c3 TableGen support for parameterized register class information
This replaces TableGen's type inference to operate on parameterized
types instead of MVTs, and as a consequence, some interfaces have
changed:
- Uses of MVTs are replaced by ValueTypeByHwMode.
- EEVT::TypeSet is replaced by TypeSetByHwMode.

This affects the way that types and type sets are printed, and the
tests relying on that have been updated.

There are certain users of the inferred types outside of TableGen
itself, namely FastISel and GlobalISel. For those users, the way
that the types are accessed have changed. For typical scenarios,
these replacements can be used:
- TreePatternNode::getType(ResNo) -> getSimpleType(ResNo)
- TreePatternNode::hasTypeSet(ResNo) -> hasConcreteType(ResNo)
- TypeSet::isConcrete -> TypeSetByHwMode::isValueTypeByHwMode(false)

For more information, please refer to the review page.

Differential Revision: https://reviews.llvm.org/D31951

llvm-svn: 313271
2017-09-14 16:56:21 +00:00

65 lines
1.8 KiB
C++

//===--- CodeGenHwModes.h ---------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Classes to parse and store HW mode information for instruction selection.
//===----------------------------------------------------------------------===//
#ifndef LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H
#define LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H
#include "llvm/ADT/StringMap.h"
#include <map>
#include <string>
#include <vector>
// HwModeId -> list of predicates (definition)
namespace llvm {
class Record;
class RecordKeeper;
struct CodeGenHwModes;
struct HwMode {
HwMode(Record *R);
StringRef Name;
std::string Features;
void dump() const;
};
struct HwModeSelect {
HwModeSelect(Record *R, CodeGenHwModes &CGH);
typedef std::pair<unsigned, Record*> PairType;
std::vector<PairType> Items;
void dump() const;
};
struct CodeGenHwModes {
enum : unsigned { DefaultMode = 0 };
static StringRef DefaultModeName;
CodeGenHwModes(RecordKeeper &R);
unsigned getHwModeId(StringRef Name) const;
const HwMode &getMode(unsigned Id) const {
assert(Id != 0 && "Mode id of 0 is reserved for the default mode");
return Modes[Id-1];
}
const HwModeSelect &getHwModeSelect(Record *R) const;
unsigned getNumModeIds() const { return Modes.size()+1; }
void dump() const;
private:
RecordKeeper &Records;
StringMap<unsigned> ModeIds; // HwMode (string) -> HwModeId
std::vector<HwMode> Modes;
std::map<Record*,HwModeSelect> ModeSelects;
};
}
#endif // LLVM_UTILS_TABLEGEN_CODEGENHWMODES_H