clang  6.0.0svn
XRayLists.cpp
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1 //===--- XRayFunctionFilter.cpp - XRay automatic-attribution --------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // User-provided filters for always/never XRay instrumenting certain functions.
11 //
12 //===----------------------------------------------------------------------===//
13 #include "clang/Basic/XRayLists.h"
14 
15 using namespace clang;
16 
18  ArrayRef<std::string> AlwaysInstrumentPaths,
19  ArrayRef<std::string> NeverInstrumentPaths, SourceManager &SM)
20  : AlwaysInstrument(
21  llvm::SpecialCaseList::createOrDie(AlwaysInstrumentPaths)),
22  NeverInstrument(llvm::SpecialCaseList::createOrDie(NeverInstrumentPaths)),
23  SM(SM) {}
24 
26 XRayFunctionFilter::shouldImbueFunction(StringRef FunctionName) const {
27  // First apply the always instrument list, than if it isn't an "always" see
28  // whether it's treated as a "never" instrument function.
29  if (AlwaysInstrument->inSection("xray_always_instrument", "fun", FunctionName,
30  "arg1"))
32  if (AlwaysInstrument->inSection("xray_always_instrument", "fun",
33  FunctionName))
35  if (NeverInstrument->inSection("xray_never_instrument", "fun", FunctionName))
36  return ImbueAttribute::NEVER;
37  return ImbueAttribute::NONE;
38 }
39 
42  StringRef Category) const {
43  if (AlwaysInstrument->inSection("xray_always_instrument", "src", Filename,
44  Category))
46  if (NeverInstrument->inSection("xray_never_instrument", "src", Filename,
47  Category))
48  return ImbueAttribute::NEVER;
49  return ImbueAttribute::NONE;
50 }
51 
54  StringRef Category) const {
55  if (!Loc.isValid())
56  return ImbueAttribute::NONE;
57  return this->shouldImbueFunctionsInFile(SM.getFilename(SM.getFileLoc(Loc)),
58  Category);
59 }
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:26
ImbueAttribute shouldImbueFunctionsInFile(StringRef Filename, StringRef Category=StringRef()) const
Definition: XRayLists.cpp:41
int Category
Definition: Format.cpp:1348
XRayFunctionFilter(ArrayRef< std::string > AlwaysInstrumentPaths, ArrayRef< std::string > NeverInstrumentPaths, SourceManager &SM)
Definition: XRayLists.cpp:17
StringRef Filename
Definition: Format.cpp:1345
const SourceManager & SM
Definition: Format.cpp:1337
StringRef getFilename(SourceLocation SpellingLoc) const
Return the filename of the file containing a SourceLocation.
Encodes a location in the source.
SourceLocation getFileLoc(SourceLocation Loc) const
Given Loc, if it is a macro location return the expansion location or the spelling location...
Dataflow Directional Tag Classes.
bool isValid() const
Return true if this is a valid SourceLocation object.
ImbueAttribute shouldImbueFunction(StringRef FunctionName) const
Definition: XRayLists.cpp:26
ImbueAttribute shouldImbueLocation(SourceLocation Loc, StringRef Category=StringRef()) const
Definition: XRayLists.cpp:53
This class handles loading and caching of source files into memory.