This makes the C++ ABI depend entirely on the target: MS ABI for -win32 triples,
Itanium otherwise. It's no longer possible to do weird combinations.
To be able to run a test with a specific ABI without constraining it to a
specific triple, new substitutions are added to lit: %itanium_abi_triple and
%ms_abi_triple can be used to get the current target triple adjusted to the
desired ABI. For example, if the test suite is running with the i686-pc-win32
target, %itanium_abi_triple will expand to i686-pc-mingw32.
Differential Revision: http://llvm-reviews.chandlerc.com/D2545
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@199250 91177308-0d34-0410-b5e6-96231b3b80d8
GCC 4.7 changed the MingW ABI. On the clang side this means that methods now
have the thiscall calling convention by default.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@197164 91177308-0d34-0410-b5e6-96231b3b80d8
weak linkage. Also, fix a problem where global weak variables
with non-trivial initializers were getting guard variables, or at
least were checking for them and then crashing.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129342 91177308-0d34-0410-b5e6-96231b3b80d8
Hans Wennborg