2 Commits

Author	SHA1	Message	Date
Kristina Brooks	a1e6e65b9f	[X86][Tests] Make sure tls-direct-seg-refs tests only run where supported ... This flag is only supported for x86 targets, make sure the tests only run for those. llvm-svn: 344742	2018-10-18 14:44:25 +00:00
Kristina Brooks	7f569b7c4f	Add support for -mno-tls-direct-seg-refs to Clang ... This patch exposes functionality added in rL344723 to the Clang driver/frontend as a flag and adds appropriate metadata. Driver tests pass: ``` ninja check-clang-driver -snip- Expected Passes : 472 Expected Failures : 3 Unsupported Tests : 65 ``` Odd failure in CodeGen tests but unrelated to this: ``` ninja check-clang-codegen -snip- /SourceCache/llvm-trunk-8.0/tools/clang/test/CodeGen/builtins-wasm.c:87:10: error: cannot compile this builtin function yet -snip- Failing Tests (1): Clang :: CodeGen/builtins-wasm.c Expected Passes : 1250 Expected Failures : 2 Unsupported Tests : 120 Unexpected Failures: 1 ``` Original commit: [X86] Support for the mno-tls-direct-seg-refs flag 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 Patch by nruslan (Ruslan Nikolaev). Differential Revision: https://reviews.llvm.org/D53102 llvm-svn: 344739	2018-10-18 14:07:02 +00:00