1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/llvm/lib/CodeGen/MachineFunctionPass.cpp b/contrib/llvm/lib/CodeGen/MachineFunctionPass.cpp
new file mode 100644
index 000000000000..228fe170ab46
--- /dev/null
+++ b/contrib/llvm/lib/CodeGen/MachineFunctionPass.cpp
@@ -0,0 +1,89 @@
+//===-- MachineFunctionPass.cpp -------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the definitions of the MachineFunctionPass members.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
+#include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Analysis/GlobalsModRef.h"
+#include "llvm/Analysis/IVUsers.h"
+#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/MemoryDependenceAnalysis.h"
+#include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionAnalysis.h"
+#include "llvm/CodeGen/Passes.h"
+#include "llvm/CodeGen/StackProtector.h"
+#include "llvm/IR/Dominators.h"
+#include "llvm/IR/Function.h"
+
+using namespace llvm;
+
+Pass *MachineFunctionPass::createPrinterPass(raw_ostream &O,
+                                             const std::string &Banner) const {
+  return createMachineFunctionPrinterPass(O, Banner);
+}
+
+bool MachineFunctionPass::runOnFunction(Function &F) {
+  // Do not codegen any 'available_externally' functions at all, they have
+  // definitions outside the translation unit.
+  if (F.hasAvailableExternallyLinkage())
+    return false;
+
+  MachineFunction &MF = getAnalysis<MachineFunctionAnalysis>().getMF();
+  MachineFunctionProperties &MFProps = MF.getProperties();
+
+#ifndef NDEBUG
+  if (!MFProps.verifyRequiredProperties(RequiredProperties)) {
+    errs() << "MachineFunctionProperties required by " << getPassName()
+           << " pass are not met by function " << F.getName() << ".\n"
+           << "Required properties: ";
+    RequiredProperties.print(errs(), /*OnlySet=*/true);
+    errs() << "\nCurrent properties: ";
+    MFProps.print(errs());
+    errs() << "\n";
+    llvm_unreachable("MachineFunctionProperties check failed");
+  }
+#endif
+
+  bool RV = runOnMachineFunction(MF);
+
+  MFProps.set(SetProperties);
+  MFProps.clear(ClearedProperties);
+  return RV;
+}
+
+void MachineFunctionPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.addRequired<MachineFunctionAnalysis>();
+  AU.addPreserved<MachineFunctionAnalysis>();
+
+  // MachineFunctionPass preserves all LLVM IR passes, but there's no
+  // high-level way to express this. Instead, just list a bunch of
+  // passes explicitly. This does not include setPreservesCFG,
+  // because CodeGen overloads that to mean preserving the MachineBasicBlock
+  // CFG in addition to the LLVM IR CFG.
+  AU.addPreserved<BasicAAWrapperPass>();
+  AU.addPreserved<DominanceFrontierWrapperPass>();
+  AU.addPreserved<DominatorTreeWrapperPass>();
+  AU.addPreserved<AAResultsWrapperPass>();
+  AU.addPreserved<GlobalsAAWrapperPass>();
+  AU.addPreserved<IVUsersWrapperPass>();
+  AU.addPreserved<LoopInfoWrapperPass>();
+  AU.addPreserved<MemoryDependenceWrapperPass>();
+  AU.addPreserved<ScalarEvolutionWrapperPass>();
+  AU.addPreserved<SCEVAAWrapperPass>();
+  AU.addPreserved<StackProtector>();
+
+  FunctionPass::getAnalysisUsage(AU);
+}