Stub out a new lazy value info pass, which will eventually

vend value constraint information to the optimizer.

llvm-svn: 86767

2 files changed, 32 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/CMakeLists.txt b/llvm/lib/Analysis/CMakeLists.txt
index 3f8356caf0a..0a83c3db89d 100644
--- a/llvm/lib/Analysis/CMakeLists.txt
+++ b/llvm/lib/Analysis/CMakeLists.txt
@@ -18,6 +18,7 @@ add_llvm_library(LLVMAnalysis
   InstructionSimplify.cpp
   Interval.cpp
   IntervalPartition.cpp
+  LazyValueInfo.cpp
   LibCallAliasAnalysis.cpp
   LibCallSemantics.cpp
   LiveValues.cpp
diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
new file mode 100644
index 00000000000..cfedc20448b
--- /dev/null
+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
@@ -0,0 +1,31 @@
+//===- LazyValueInfo.cpp - Value constraint analysis ----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the interface for lazy computation of value constraint
+// information.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Analysis/LazyValueInfo.h"
+using namespace llvm;
+
+char LazyValueInfo::ID = 0;
+static RegisterPass<LazyValueInfo>
+X("lazy-value-info", "Lazy Value Information Analysis", false, true);
+
+namespace llvm {
+  FunctionPass *createLazyValueInfoPass() { return new LazyValueInfo(); }
+}
+
+LazyValueInfo::LazyValueInfo() : FunctionPass(&ID) {
+}
+
+void LazyValueInfo::releaseMemory() {
+  
+}