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...do their own thing >  - The other targets don't support thread-local storage > > [1] http://gcc.gnu.org/onlinedocs/gcc-4.0.4/gcc/Variable-Attributes.html#index-g_t_0040code_007btls_005fmodel_007d-attribute-1797 > [2] http://www.akkadia.org/drepper/tls.pdf [3] http://code.google.com/searchframe#BGeH2W13jNw/trunk/src/thread_cache.h&l=257 -------------- next part -------------- A non-text attachment was scrubbed... Name: tls_models.diff Type: application/octet-stream Size: 36638 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120604/33a322f0/at...

Hi all, I would like to hear your thoughts on adding support for extending the IR to allow for explicitly selecting which model to use for thread-local storage of a variable. The motivation is to allow Clang to support the "tls_model" variable attribute [1], as requested in PR9788. The idea would be to extend the IR to allow an optional TLS-model argument to the thread_local