1 //=== ScopLocation.cpp - Debug location for ScopDetection ----- -*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Helper function for extracting region debug information. 10 // 11 //===----------------------------------------------------------------------===// 12 // 13 #include "polly/Support/ScopLocation.h" 14 #include "llvm/Analysis/RegionInfo.h" 15 #include "llvm/IR/DebugInfoMetadata.h" 16 17 using namespace llvm; 18 19 namespace polly { 20 21 void getDebugLocation(const Region *R, unsigned &LineBegin, unsigned &LineEnd, 22 std::string &FileName) { 23 LineBegin = -1; 24 LineEnd = 0; 25 26 for (const BasicBlock *BB : R->blocks()) 27 for (const Instruction &Inst : *BB) { 28 DebugLoc DL = Inst.getDebugLoc(); 29 if (!DL) 30 continue; 31 32 auto *Scope = cast<DIScope>(DL.getScope()); 33 34 if (FileName.empty()) 35 FileName = Scope->getFilename().str(); 36 37 unsigned NewLine = DL.getLine(); 38 39 LineBegin = std::min(LineBegin, NewLine); 40 LineEnd = std::max(LineEnd, NewLine); 41 } 42 } 43 } // namespace polly 44