lib/DebugInfo/GSYM/InlineInfo.cpp

   1 //===- InlineInfo.cpp -------------------------------------------*- C++ -*-===//
   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 #include "llvm/DebugInfo/GSYM/FileEntry.h"
  11 #include "llvm/DebugInfo/GSYM/InlineInfo.h"
  12 #include <algorithm>
  13 #include <inttypes.h>
  14
  15 using namespace llvm;
  16 using namespace gsym;
  17
  18
  19 raw_ostream &llvm::gsym::operator<<(raw_ostream &OS, const InlineInfo &II) {
  20   if (!II.isValid())
  21     return OS;
  22   bool First = true;
  23   for (auto Range : II.Ranges) {
  24     if (First)
  25       First = false;
  26     else
  27       OS << ' ';
  28     OS << Range;
  29   }
  30   OS << " Name = " << HEX32(II.Name) << ", CallFile = " << II.CallFile
  31      << ", CallLine = " << II.CallFile << '\n';
  32   for (const auto &Child : II.Children)
  33     OS << Child;
  34   return OS;
  35 }
  36
  37 static bool getInlineStackHelper(const InlineInfo &II, uint64_t Addr,
  38     std::vector<const InlineInfo *> &InlineStack) {
  39   if (II.Ranges.contains(Addr)) {
  40     // If this is the top level that represents the concrete function,
  41     // there will be no name and we shoud clear the inline stack. Otherwise
  42     // we have found an inline call stack that we need to insert.
  43     if (II.Name != 0)
  44       InlineStack.insert(InlineStack.begin(), &II);
  45     for (const auto &Child : II.Children) {
  46       if (::getInlineStackHelper(Child, Addr, InlineStack))
  47         break;
  48     }
  49     return !InlineStack.empty();
  50   }
  51   return false;
  52 }
  53
  54 llvm::Optional<InlineInfo::InlineArray> InlineInfo::getInlineStack(uint64_t Addr) const {
  55   InlineArray Result;
  56   if (getInlineStackHelper(*this, Addr, Result))
  57     return Result;
  58   return llvm::None;
  59 }