1 files changed, 77 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Analysis/CycleAnalysis.cpp b/contrib/llvm-project/llvm/lib/Analysis/CycleAnalysis.cpp
new file mode 100644
index 000000000000..09c7ee67e05c
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Analysis/CycleAnalysis.cpp
@@ -0,0 +1,77 @@
+//===- CycleAnalysis.cpp - Compute CycleInfo for LLVM IR ------------------===//
+//
+// 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/Analysis/CycleAnalysis.h"
+#include "llvm/ADT/GenericCycleImpl.h"
+#include "llvm/IR/CFG.h"
+#include "llvm/InitializePasses.h"
+
+using namespace llvm;
+
+template class llvm::GenericCycleInfo<SSAContext>;
+template class llvm::GenericCycle<SSAContext>;
+
+CycleInfo CycleAnalysis::run(Function &F, FunctionAnalysisManager &) {
+  CycleInfo CI;
+  CI.compute(F);
+  return CI;
+}
+
+AnalysisKey CycleAnalysis::Key;
+
+CycleInfoPrinterPass::CycleInfoPrinterPass(raw_ostream &OS) : OS(OS) {}
+
+PreservedAnalyses CycleInfoPrinterPass::run(Function &F,
+                                            FunctionAnalysisManager &AM) {
+  OS << "CycleInfo for function: " << F.getName() << "\n";
+  AM.getResult<CycleAnalysis>(F).print(OS);
+
+  return PreservedAnalyses::all();
+}
+
+//===----------------------------------------------------------------------===//
+//  CycleInfoWrapperPass Implementation
+//===----------------------------------------------------------------------===//
+//
+// The implementation details of the wrapper pass that holds a CycleInfo
+// suitable for use with the legacy pass manager.
+//
+//===----------------------------------------------------------------------===//
+
+char CycleInfoWrapperPass::ID = 0;
+
+CycleInfoWrapperPass::CycleInfoWrapperPass() : FunctionPass(ID) {
+  initializeCycleInfoWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+INITIALIZE_PASS_BEGIN(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis",
+                      true, true)
+INITIALIZE_PASS_END(CycleInfoWrapperPass, "cycles", "Cycle Info Analysis", true,
+                    true)
+
+void CycleInfoWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+}
+
+bool CycleInfoWrapperPass::runOnFunction(Function &Func) {
+  CI.clear();
+
+  F = &Func;
+  CI.compute(Func);
+  return false;
+}
+
+void CycleInfoWrapperPass::print(raw_ostream &OS, const Module *) const {
+  OS << "CycleInfo for function: " << F->getName() << "\n";
+  CI.print(OS);
+}
+
+void CycleInfoWrapperPass::releaseMemory() {
+  CI.clear();
+  F = nullptr;
+}