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Author SHA1 Message Date
Petr Hosek 7b27454477 [ADT] Normalize empty triple components 
LLVM triple normalization is handling "unknown" and empty components
differently; for example given "x86_64-unknown-linux-gnu" and
"x86_64-linux-gnu" which should be equivalent, triple normalization
returns "x86_64-unknown-linux-gnu" and "x86_64--linux-gnu". autoconf's
config.sub returns "x86_64-unknown-linux-gnu" for both
"x86_64-linux-gnu" and "x86_64-unknown-linux-gnu". This changes the
triple normalization to behave the same way, replacing empty triple
components with "unknown".

This addresses PR37129.

Differential Revision: https://reviews.llvm.org/D50219

llvm-svn: 339294
 2018-08-08 22:23:57 +00:00
David Majnemer e11d373512 [Driver] Inject the MSVC compatibility version into the triple 
Encoding the version into the triple will allow us to communicate to
LLVM what functions it can expect to depend upon in the implementation.

llvm-svn: 239273
 2015-06-08 00:22:46 +00:00
Saleem Abdulrasool f4c9e49f94 Driver: add target definition for Windows on ARM 
This introduces the definitions needed for the Windows on ARM target.  Add
target definitions for both the MSVC environment and the MSVC + Itanium C++ ABI
environment.  The Visual Studio definitions correspond to the definitions
provided by Visual Studio 2012.

llvm-svn: 205650
 2014-04-04 20:31:19 +00:00