vendor/llvm/llvm-trunk-r338150

1 files changed, 66 insertions, 0 deletions

diff --git a/tools/llvm-mca/CodeRegion.cpp b/tools/llvm-mca/CodeRegion.cpp
new file mode 100644
index 0000000000000..8968659965042
--- /dev/null
+++ b/tools/llvm-mca/CodeRegion.cpp
@@ -0,0 +1,66 @@
+//===-------------------------- CodeRegion.cpp -----------------*- C++ -* -===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+/// \file
+///
+/// This file implements methods from the CodeRegions interface.
+///
+//===----------------------------------------------------------------------===//
+
+#include "CodeRegion.h"
+
+using namespace llvm;
+
+namespace mca {
+
+bool CodeRegion::isLocInRange(SMLoc Loc) const {
+  if (RangeEnd.isValid() && Loc.getPointer() > RangeEnd.getPointer())
+    return false;
+  if (RangeStart.isValid() && Loc.getPointer() < RangeStart.getPointer())
+    return false;
+  return true;
+}
+
+void CodeRegions::beginRegion(StringRef Description, SMLoc Loc) {
+  assert(!Regions.empty() && "Missing Default region");
+  const CodeRegion &CurrentRegion = *Regions.back();
+  if (CurrentRegion.startLoc().isValid() && !CurrentRegion.endLoc().isValid()) {
+    SM.PrintMessage(Loc, SourceMgr::DK_Warning,
+                    "Ignoring invalid region start");
+    return;
+  }
+
+  // Remove the default region if there are user defined regions.
+  if (!CurrentRegion.startLoc().isValid())
+    Regions.erase(Regions.begin());
+  addRegion(Description, Loc);
+}
+
+void CodeRegions::endRegion(SMLoc Loc) {
+  assert(!Regions.empty() && "Missing Default region");
+  CodeRegion &CurrentRegion = *Regions.back();
+  if (CurrentRegion.endLoc().isValid()) {
+    SM.PrintMessage(Loc, SourceMgr::DK_Warning, "Ignoring invalid region end");
+    return;
+  }
+
+  CurrentRegion.setEndLocation(Loc);
+}
+
+void CodeRegions::addInstruction(std::unique_ptr<const MCInst> Instruction) {
+  const SMLoc &Loc = Instruction->getLoc();
+  const auto It =
+      std::find_if(Regions.rbegin(), Regions.rend(),
+                   [Loc](const std::unique_ptr<CodeRegion> &Region) {
+                     return Region->isLocInRange(Loc);
+                   });
+  if (It != Regions.rend())
+    (*It)->addInstruction(std::move(Instruction));
+}
+
+} // namespace mca