[PATCH] D53102: Support for the mno-tls-direct-seg-refs flag

[Ruslan Nikolaev via Phabricator via cfe-commits]

nruslan created this revision.
nruslan added reviewers: hans, craig.topper.
Herald added a subscriber: cfe-commits.

Allows to disable direct TLS segment access (%fs or %gs). GCC supports a similar flag, it can be useful in some circumstances, e.g. when a thread context block needs to be updated directly from user space. More info and specific use cases: https://bugs.llvm.org/show_bug.cgi?id=16145

There is another revision for LLVM as well.


Repository:
  rC Clang

https://reviews.llvm.org/D53102

Files:
  docs/ClangCommandLineReference.rst
  include/clang/Driver/CC1Options.td
  include/clang/Driver/Options.td
  include/clang/Frontend/CodeGenOptions.def
  lib/CodeGen/CGCall.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/indirect-tls-seg-refs.c
  test/Driver/indirect-tls-seg-refs.c

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