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//===-------------------------- CodeRegion.cpp -----------------*- 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 methods from the CodeRegions interface.
///
//===----------------------------------------------------------------------===//
#include "CodeRegion.h"
namespace llvm {
namespace mca {
CodeRegions::CodeRegions(llvm::SourceMgr &S) : SM(S) {
// Create a default region for the input code sequence.
Regions.emplace_back(make_unique<CodeRegion>("Default", SMLoc()));
}
bool CodeRegion::isLocInRange(SMLoc Loc) const {
if (RangeEnd.isValid() && Loc.getPointer() > RangeEnd.getPointer())
return false;
if (RangeStart.isValid() && Loc.getPointer() < RangeStart.getPointer())
return false;
return true;
}
void CodeRegions::beginRegion(StringRef Description, SMLoc Loc) {
assert(!Regions.empty() && "Missing Default region");
const CodeRegion &CurrentRegion = *Regions.back();
if (CurrentRegion.startLoc().isValid() && !CurrentRegion.endLoc().isValid()) {
SM.PrintMessage(Loc, SourceMgr::DK_Warning,
"Ignoring invalid region start");
return;
}
// Remove the default region if there are user defined regions.
if (!CurrentRegion.startLoc().isValid())
Regions.erase(Regions.begin());
Regions.emplace_back(make_unique<CodeRegion>(Description, Loc));
}
void CodeRegions::endRegion(SMLoc Loc) {
assert(!Regions.empty() && "Missing Default region");
CodeRegion &CurrentRegion = *Regions.back();
if (CurrentRegion.endLoc().isValid()) {
SM.PrintMessage(Loc, SourceMgr::DK_Warning,
"Ignoring invalid region end");
return;
}
CurrentRegion.setEndLocation(Loc);
}
void CodeRegions::addInstruction(const MCInst &Instruction) {
const SMLoc &Loc = Instruction.getLoc();
const auto It =
std::find_if(Regions.rbegin(), Regions.rend(),
[Loc](const UniqueCodeRegion &Region) {
return Region->isLocInRange(Loc);
});
if (It != Regions.rend())
(*It)->addInstruction(Instruction);
}
} // namespace mca
} // namespace llvm
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