[llvm] r198158 - Make LLVM_MSC_PREREQ() compatible with all MSVC versions

[Alp Toker]

Author: alp
Date: Sun Dec 29 01:39:53 2013
New Revision: 198158

URL: http://llvm.org/viewvc/llvm-project?rev=198158&view=rev
Log:
Make LLVM_MSC_PREREQ() compatible with all MSVC versions

The defined() preprocessor expansion wasn't working out on the lld builder.

Also update the documentation to cover another Visual Studio release versioning
convention.

Modified:
    llvm/trunk/include/llvm/Support/Compiler.h

Modified: llvm/trunk/include/llvm/Support/Compiler.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/Compiler.h?rev=198158&r1=198157&r2=198158&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Support/Compiler.h (original)
+++ llvm/trunk/include/llvm/Support/Compiler.h Sun Dec 29 01:39:53 2013
@@ -43,11 +43,14 @@
 /// \macro LLVM_MSC_PREREQ
 /// \brief Is the compiler MSVC of at least the specified version?
 /// The common \param version values to check for are:
-///  * 1600: Microsoft Visual Studio 2010
-///  * 1700: Microsoft Visual Studio 2012
-///  * 1800: Microsoft Visual Studio 2013
-#define LLVM_MSC_PREREQ(version) \
-  (defined(_MSC_VER) && _MSC_VER >= (version))
+///  * 1600: Microsoft Visual Studio 2010 / 10.0
+///  * 1700: Microsoft Visual Studio 2012 / 11.0
+///  * 1800: Microsoft Visual Studio 2013 / 12.0
+#ifdef _MSC_VER
+#define LLVM_MSC_PREREQ(version) (_MSC_VER >= (version))
+#else
+#define LLVM_MSC_PREREQ(version) 0
+#endif
 
 /// \brief Does the compiler support r-value references?
 /// This implies that <utility> provides the one-argument std::move;  it