[MemorySSA] Reinstate the legacy printer and verifier.

Differential Revision: http://reviews.llvm.org/D22058

llvm-svn: 274679

2 files changed, 31 insertions, 0 deletions

diff --git a/llvm/lib/Transforms/Utils/MemorySSA.cpp b/llvm/lib/Transforms/Utils/MemorySSA.cpp
index d13cfe35470..0aed1334571 100644
--- a/llvm/lib/Transforms/Utils/MemorySSA.cpp
+++ b/llvm/lib/Transforms/Utils/MemorySSA.cpp
@@ -54,6 +54,16 @@ INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(MemorySSAWrapperPass, "memoryssa", "Memory SSA", false,
                     true)
 
+INITIALIZE_PASS_BEGIN(MemorySSAPrinterLegacyPass, "print-memoryssa",
+                      "Memory SSA Printer", false, false)
+INITIALIZE_PASS_DEPENDENCY(MemorySSAWrapperPass)
+INITIALIZE_PASS_END(MemorySSAPrinterLegacyPass, "print-memoryssa",
+                    "Memory SSA Printer", false, false)
+
+static cl::opt<bool>
+    VerifyMemorySSA("verify-memoryssa", cl::init(false), cl::Hidden,
+                    cl::desc("Verify MemorySSA in legacy printer pass."));
+
 namespace llvm {
 /// \brief An assembly annotator class to print Memory SSA information in
 /// comments.
@@ -894,6 +904,26 @@ void MemoryAccess::dump() const {
   dbgs() << "\n";
 }
 
+char MemorySSAPrinterLegacyPass::ID = 0;
+
+MemorySSAPrinterLegacyPass::MemorySSAPrinterLegacyPass() : FunctionPass(ID) {
+  initializeMemorySSAPrinterLegacyPassPass(*PassRegistry::getPassRegistry());
+}
+
+void MemorySSAPrinterLegacyPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<MemorySSAWrapperPass>();
+  AU.addPreserved<MemorySSAWrapperPass>();
+}
+
+bool MemorySSAPrinterLegacyPass::runOnFunction(Function &F) {
+  auto &MSSA = getAnalysis<MemorySSAWrapperPass>().getMSSA();
+  MSSA.print(dbgs());
+  if (VerifyMemorySSA)
+    MSSA.verifyMemorySSA();
+  return false;
+}
+
 char MemorySSAAnalysis::PassID;
 
 MemorySSA MemorySSAAnalysis::run(Function &F, AnalysisManager<Function> &AM) {
diff --git a/llvm/lib/Transforms/Utils/Utils.cpp b/llvm/lib/Transforms/Utils/Utils.cpp
index e363dd40da7..8f85f19efe3 100644
--- a/llvm/lib/Transforms/Utils/Utils.cpp
+++ b/llvm/lib/Transforms/Utils/Utils.cpp
@@ -34,6 +34,7 @@ void llvm::initializeTransformUtils(PassRegistry &Registry) {
   initializeInstSimplifierPass(Registry);
   initializeMetaRenamerPass(Registry);
   initializeMemorySSAWrapperPassPass(Registry);
+  initializeMemorySSAPrinterLegacyPassPass(Registry);
 }
 
 /// LLVMInitializeTransformUtils - C binding for initializeTransformUtilsPasses.