| 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.getStableDebugLoc(); |
| 29 | if (!DL) |
| 30 | continue; |
| 31 | |
| 32 | auto *Scope = cast<DIScope>(Val: DL.getScope()); |
| 33 | |
| 34 | if (FileName.empty()) |
| 35 | FileName = Scope->getFilename().str(); |
| 36 | |
| 37 | unsigned NewLine = DL.getLine(); |
| 38 | |
| 39 | LineBegin = std::min(a: LineBegin, b: NewLine); |
| 40 | LineEnd = std::max(a: LineEnd, b: NewLine); |
| 41 | } |
| 42 | } |
| 43 | } // namespace polly |
| 44 |