1 files changed, 134 insertions, 0 deletions

diff --git a/contrib/llvm-project/llvm/lib/IR/DebugLoc.cpp b/contrib/llvm-project/llvm/lib/IR/DebugLoc.cpp
new file mode 100644
index 000000000000..14d1396f1543
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/IR/DebugLoc.cpp
@@ -0,0 +1,134 @@
+//===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/IR/DebugLoc.h"
+#include "LLVMContextImpl.h"
+#include "llvm/Config/llvm-config.h"
+#include "llvm/IR/DebugInfo.h"
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// DebugLoc Implementation
+//===----------------------------------------------------------------------===//
+DebugLoc::DebugLoc(const DILocation *L) : Loc(const_cast<DILocation *>(L)) {}
+DebugLoc::DebugLoc(const MDNode *L) : Loc(const_cast<MDNode *>(L)) {}
+
+DILocation *DebugLoc::get() const {
+  return cast_or_null<DILocation>(Loc.get());
+}
+
+unsigned DebugLoc::getLine() const {
+  assert(get() && "Expected valid DebugLoc");
+  return get()->getLine();
+}
+
+unsigned DebugLoc::getCol() const {
+  assert(get() && "Expected valid DebugLoc");
+  return get()->getColumn();
+}
+
+MDNode *DebugLoc::getScope() const {
+  assert(get() && "Expected valid DebugLoc");
+  return get()->getScope();
+}
+
+DILocation *DebugLoc::getInlinedAt() const {
+  assert(get() && "Expected valid DebugLoc");
+  return get()->getInlinedAt();
+}
+
+MDNode *DebugLoc::getInlinedAtScope() const {
+  return cast<DILocation>(Loc)->getInlinedAtScope();
+}
+
+DebugLoc DebugLoc::getFnDebugLoc() const {
+  // FIXME: Add a method on \a DILocation that does this work.
+  const MDNode *Scope = getInlinedAtScope();
+  if (auto *SP = getDISubprogram(Scope))
+    return DebugLoc::get(SP->getScopeLine(), 0, SP);
+
+  return DebugLoc();
+}
+
+bool DebugLoc::isImplicitCode() const {
+  if (DILocation *Loc = get()) {
+    return Loc->isImplicitCode();
+  }
+  return true;
+}
+
+void DebugLoc::setImplicitCode(bool ImplicitCode) {
+  if (DILocation *Loc = get()) {
+    Loc->setImplicitCode(ImplicitCode);
+  }
+}
+
+DebugLoc DebugLoc::get(unsigned Line, unsigned Col, const MDNode *Scope,
+                       const MDNode *InlinedAt, bool ImplicitCode) {
+  // If no scope is available, this is an unknown location.
+  if (!Scope)
+    return DebugLoc();
+
+  return DILocation::get(Scope->getContext(), Line, Col,
+                         const_cast<MDNode *>(Scope),
+                         const_cast<MDNode *>(InlinedAt), ImplicitCode);
+}
+
+DebugLoc DebugLoc::appendInlinedAt(DebugLoc DL, DILocation *InlinedAt,
+                                   LLVMContext &Ctx,
+                                   DenseMap<const MDNode *, MDNode *> &Cache,
+                                   bool ReplaceLast) {
+  SmallVector<DILocation *, 3> InlinedAtLocations;
+  DILocation *Last = InlinedAt;
+  DILocation *CurInlinedAt = DL;
+
+  // Gather all the inlined-at nodes.
+  while (DILocation *IA = CurInlinedAt->getInlinedAt()) {
+    // Skip any we've already built nodes for.
+    if (auto *Found = Cache[IA]) {
+      Last = cast<DILocation>(Found);
+      break;
+    }
+
+    if (ReplaceLast && !IA->getInlinedAt())
+      break;
+    InlinedAtLocations.push_back(IA);
+    CurInlinedAt = IA;
+  }
+
+  // Starting from the top, rebuild the nodes to point to the new inlined-at
+  // location (then rebuilding the rest of the chain behind it) and update the
+  // map of already-constructed inlined-at nodes.
+  for (const DILocation *MD : reverse(InlinedAtLocations))
+    Cache[MD] = Last = DILocation::getDistinct(
+        Ctx, MD->getLine(), MD->getColumn(), MD->getScope(), Last);
+
+  return Last;
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void DebugLoc::dump() const { print(dbgs()); }
+#endif
+
+void DebugLoc::print(raw_ostream &OS) const {
+  if (!Loc)
+    return;
+
+  // Print source line info.
+  auto *Scope = cast<DIScope>(getScope());
+  OS << Scope->getFilename();
+  OS << ':' << getLine();
+  if (getCol() != 0)
+    OS << ':' << getCol();
+
+  if (DebugLoc InlinedAtDL = getInlinedAt()) {
+    OS << " @[ ";
+    InlinedAtDL.print(OS);
+    OS << " ]";
+  }
+}