Add a -lint pass which checks for common sources of undefined or likely

unintended behavior.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100798 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/Lint.h

@@ -0,0 +1,52 @@
+//===-- llvm/Analysis/Lint.h - LLVM IR Lint ---------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines lint interfaces that can be used for some sanity checking
+// of input to the system, and for checking that transformations
+// haven't done something bad. In contrast to the Verifier, the Lint checker
+// checks for undefined behavior or constructions with likely unintended
+// behavior.
+//
+// To see what specifically is checked, look at Lint.cpp
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_LINT_H
+#define LLVM_ANALYSIS_LINT_H
+
+#include <string>
+
+namespace llvm {
+
+class FunctionPass;
+class Module;
+class Function;
+
+/// @brief Create a lint pass.
+///
+/// Check a module or function.
+FunctionPass *createLintPass();
+
+/// @brief Check a module.
+///
+/// This should only be used for debugging, because it plays games with
+/// PassManagers and stuff.
+void lintModule(
+  const Module &M,  ///< The module to be checked
+  std::string *ErrorInfo = 0      ///< Information about failures.
+);
+
+// lintFunction - Check a function.
+void lintFunction(
+  const Function &F  ///< The function to be checked
+);
+
+} // End llvm namespace
+
+#endif