65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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//===-- CallContext.h - Call Context Handler ---------------------*- C++-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_PROFGEN_CALLCONTEXT_H
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#define LLVM_TOOLS_LLVM_PROFGEN_CALLCONTEXT_H
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#include "llvm/ProfileData/SampleProf.h"
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#include <sstream>
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#include <string>
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#include <vector>
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namespace llvm {
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namespace sampleprof {
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// Function name, LineLocation
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typedef std::pair<std::string, LineLocation> FrameLocation;
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typedef SmallVector<FrameLocation, 4> FrameLocationStack;
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inline std::string getCallSite(const FrameLocation &Callsite) {
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std::string CallsiteStr = Callsite.first;
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CallsiteStr += ":";
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CallsiteStr += Twine(Callsite.second.LineOffset).str();
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if (Callsite.second.Discriminator > 0) {
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CallsiteStr += ".";
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CallsiteStr += Twine(Callsite.second.Discriminator).str();
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}
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return CallsiteStr;
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}
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// TODO: This operation is expansive. If it ever gets called multiple times we
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// may think of making a class wrapper with internal states for it.
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inline std::string getLocWithContext(const FrameLocationStack &Context) {
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std::ostringstream OContextStr;
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for (const auto &Callsite : Context) {
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if (OContextStr.str().size())
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OContextStr << " @ ";
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OContextStr << getCallSite(Callsite);
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}
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return OContextStr.str();
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}
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// Reverse call context, i.e., in the order of callee frames to caller frames,
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// is useful during instruction printing or pseudo probe printing.
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inline std::string
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getReversedLocWithContext(const FrameLocationStack &Context) {
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std::ostringstream OContextStr;
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for (const auto &Callsite : reverse(Context)) {
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if (OContextStr.str().size())
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OContextStr << " @ ";
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OContextStr << getCallSite(Callsite);
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}
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return OContextStr.str();
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}
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} // end namespace sampleprof
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} // end namespace llvm
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#endif
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