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Make LLVM_MSC_PREREQ() compatible with all MSVC versions

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

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

llvm-svn: 198158
This commit is contained in:
Alp Toker 2013-12-29 07:39:53 +00:00
parent 451c278cbc
commit f4ee495310
1 changed files with 8 additions and 5 deletions
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13
include/llvm/Support/Compiler.h
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@ -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