mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 11:42:57 +01:00
80428fb35f
Lots of headers pass around MemoryBuffer objects, but very few open
them. Let those that do include FileSystem.h.
Saves ~250 includes of Chrono.h & FileSystem.h:
$ diff -u thedeps-before.txt thedeps-after.txt | grep '^[-+] ' | sort | uniq -c | sort -nr
254 - ../llvm/include/llvm/Support/FileSystem.h
253 - ../llvm/include/llvm/Support/Chrono.h
237 - ../llvm/include/llvm/Support/NativeFormatting.h
237 - ../llvm/include/llvm/Support/FormatProviders.h
192 - ../llvm/include/llvm/ADT/StringSwitch.h
190 - ../llvm/include/llvm/Support/FormatVariadicDetails.h
...
This requires duplicating the file_t typedef, which is unfortunate. I
sunk the choice of mapping mode down into the cpp file using variable
template specializations instead of class members in headers.
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
//===-------------------------- CodeRegion.h -------------------*- C++ -* -===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \file
|
|
///
|
|
/// This file implements class CodeRegion and CodeRegions.
|
|
///
|
|
/// A CodeRegion describes a region of assembly code guarded by special LLVM-MCA
|
|
/// comment directives.
|
|
///
|
|
/// # LLVM-MCA-BEGIN foo
|
|
/// ... ## asm
|
|
/// # LLVM-MCA-END
|
|
///
|
|
/// A comment starting with substring LLVM-MCA-BEGIN marks the beginning of a
|
|
/// new region of code.
|
|
/// A comment starting with substring LLVM-MCA-END marks the end of the
|
|
/// last-seen region of code.
|
|
///
|
|
/// Code regions are not allowed to overlap. Each region can have a optional
|
|
/// description; internally, regions are described by a range of source
|
|
/// locations (SMLoc objects).
|
|
///
|
|
/// An instruction (a MCInst) is added to a region R only if its location is in
|
|
/// range [R.RangeStart, R.RangeEnd].
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_TOOLS_LLVM_MCA_CODEREGION_H
|
|
#define LLVM_TOOLS_LLVM_MCA_CODEREGION_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringMap.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/MC/MCInst.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include "llvm/Support/SMLoc.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
namespace mca {
|
|
|
|
/// A region of assembly code.
|
|
///
|
|
/// It identifies a sequence of machine instructions.
|
|
class CodeRegion {
|
|
// An optional descriptor for this region.
|
|
llvm::StringRef Description;
|
|
// Instructions that form this region.
|
|
llvm::SmallVector<llvm::MCInst, 8> Instructions;
|
|
// Source location range.
|
|
llvm::SMLoc RangeStart;
|
|
llvm::SMLoc RangeEnd;
|
|
|
|
CodeRegion(const CodeRegion &) = delete;
|
|
CodeRegion &operator=(const CodeRegion &) = delete;
|
|
|
|
public:
|
|
CodeRegion(llvm::StringRef Desc, llvm::SMLoc Start)
|
|
: Description(Desc), RangeStart(Start), RangeEnd() {}
|
|
|
|
void addInstruction(const llvm::MCInst &Instruction) {
|
|
Instructions.emplace_back(Instruction);
|
|
}
|
|
|
|
llvm::SMLoc startLoc() const { return RangeStart; }
|
|
llvm::SMLoc endLoc() const { return RangeEnd; }
|
|
|
|
void setEndLocation(llvm::SMLoc End) { RangeEnd = End; }
|
|
bool empty() const { return Instructions.empty(); }
|
|
bool isLocInRange(llvm::SMLoc Loc) const;
|
|
|
|
llvm::ArrayRef<llvm::MCInst> getInstructions() const { return Instructions; }
|
|
|
|
llvm::StringRef getDescription() const { return Description; }
|
|
};
|
|
|
|
class CodeRegionParseError final : public Error {};
|
|
|
|
class CodeRegions {
|
|
// A source manager. Used by the tool to generate meaningful warnings.
|
|
llvm::SourceMgr &SM;
|
|
|
|
using UniqueCodeRegion = std::unique_ptr<CodeRegion>;
|
|
std::vector<UniqueCodeRegion> Regions;
|
|
llvm::StringMap<unsigned> ActiveRegions;
|
|
bool FoundErrors;
|
|
|
|
CodeRegions(const CodeRegions &) = delete;
|
|
CodeRegions &operator=(const CodeRegions &) = delete;
|
|
|
|
public:
|
|
CodeRegions(llvm::SourceMgr &S);
|
|
|
|
typedef std::vector<UniqueCodeRegion>::iterator iterator;
|
|
typedef std::vector<UniqueCodeRegion>::const_iterator const_iterator;
|
|
|
|
iterator begin() { return Regions.begin(); }
|
|
iterator end() { return Regions.end(); }
|
|
const_iterator begin() const { return Regions.cbegin(); }
|
|
const_iterator end() const { return Regions.cend(); }
|
|
|
|
void beginRegion(llvm::StringRef Description, llvm::SMLoc Loc);
|
|
void endRegion(llvm::StringRef Description, llvm::SMLoc Loc);
|
|
void addInstruction(const llvm::MCInst &Instruction);
|
|
llvm::SourceMgr &getSourceMgr() const { return SM; }
|
|
|
|
llvm::ArrayRef<llvm::MCInst> getInstructionSequence(unsigned Idx) const {
|
|
return Regions[Idx]->getInstructions();
|
|
}
|
|
|
|
bool empty() const {
|
|
return llvm::all_of(Regions, [](const UniqueCodeRegion &Region) {
|
|
return Region->empty();
|
|
});
|
|
}
|
|
|
|
bool isValid() const { return !FoundErrors; }
|
|
};
|
|
|
|
} // namespace mca
|
|
} // namespace llvm
|
|
|
|
#endif
|