Updated Debug macro header file for LLVM-9 and use for HPVM

hpvm/llvm_patches/include/Support/Debug.h

 //===- llvm/Support/Debug.h - Easy way to add debug output ------*- C++ -*-===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// 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
 //
 //===----------------------------------------------------------------------===//
 //
@@ -11,17 +10,18 @@
 // code, without it being enabled all of the time, and without having to add
 // command line options to enable it.
 //
-// In particular, just wrap your code with the DEBUG() macro, and it will be
-// enabled automatically if you specify '-debug' on the command-line.
-// DEBUG() requires the DEBUG_TYPE macro to be defined. Set it to "foo" specify
-// that your debug code belongs to class "foo". Be careful that you only do
-// this after including Debug.h and not around any #include of headers. Headers
-// should define and undef the macro acround the code that needs to use the
-// DEBUG() macro. Then, on the command line, you can specify '-debug-only=foo'
-// to enable JUST the debug information for the foo class.
+// In particular, just wrap your code with the LLVM_DEBUG() macro, and it will
+// be enabled automatically if you specify '-debug' on the command-line.
+// LLVM_DEBUG() requires the DEBUG_TYPE macro to be defined. Set it to "foo"
+// specify that your debug code belongs to class "foo". Be careful that you only
+// do this after including Debug.h and not around any #include of headers.
+// Headers should define and undef the macro acround the code that needs to use
+// the LLVM_DEBUG() macro. Then, on the command line, you can specify
+// '-debug-only=foo' to enable JUST the debug information for the foo class.
 //
 // When compiling without assertions, the -debug-* options and all code in
-// DEBUG() statements disappears, so it does not affect the runtime of the code.
+// LLVM_DEBUG() statements disappears, so it does not affect the runtime of the
+// code.
 //
 //===----------------------------------------------------------------------===//
 
@@ -33,11 +33,6 @@ namespace llvm {
 class raw_ostream;
 
 #ifndef NDEBUG
-/// DebugFlag - This boolean is set to true if the '-debug' command line option
-/// is specified.  This should probably not be referenced directly, instead, use
-/// the DEBUG macro below.
-///
-extern bool DebugFlag;
 
 /// isCurrentDebugType - Return true if the specified string is the debug type
 /// specified on the command line, or if none was specified on the command line
@@ -77,6 +72,33 @@ void setCurrentDebugTypes(const char **Types, unsigned Count);
 #define DEBUG_WITH_TYPE(TYPE, X) do { } while (false)
 #endif
 
+/// This boolean is set to true if the '-debug' command line option
+/// is specified.  This should probably not be referenced directly, instead, use
+/// the DEBUG macro below.
+///
+extern bool DebugFlag;
+
+/// \name Verification flags.
+///
+/// These flags turns on/off that are expensive and are turned off by default,
+/// unless macro EXPENSIVE_CHECKS is defined. The flags allow selectively
+/// turning the checks on without need to recompile.
+/// \{
+
+/// Enables verification of dominator trees.
+///
+extern bool VerifyDomInfo;
+
+/// Enables verification of loop info.
+///
+extern bool VerifyLoopInfo;
+
+/// Enables verification of MemorySSA.
+///
+extern bool VerifyMemorySSA;
+
+///\}
+
 /// EnableDebugBuffering - This defaults to false.  If true, the debug
 /// stream will install signal handlers to dump any buffered debug
 /// output.  It allows clients to selectively allow the debug stream
@@ -95,8 +117,10 @@ raw_ostream &dbgs();
 // debug build, then the code specified as the option to the macro will be
 // executed.  Otherwise it will not be.  Example:
 //
-// DEBUG(dbgs() << "Bitset contains: " << Bitset << "\n");
+// LLVM_DEBUG(dbgs() << "Bitset contains: " << Bitset << "\n");
 //
+#define LLVM_DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
+
 #define DEBUG(X) DEBUG_WITH_TYPE(DEBUG_TYPE, X)
 
 } // end namespace llvm