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3 Commits

Author SHA1 Message Date
Craig Topper 7339e61b89 [X86] Correct the value of MaxAtomicInlineWidth for pre-586 cpus 
Use the new cx8 feature flag that was added to the backend to represent support for cmpxchg8b. Use this flag to set the MaxAtomicInlineWidth.

This also assumes all the cmpxchg instructions are enabled for CK_Generic which is what cc1 defaults to when nothing is specified.

Differential Revision: https://reviews.llvm.org/D59566

llvm-svn: 356709
 2019-03-21 20:36:08 +00:00
Nirav Dave 90868bb058 [X86] Add clang support for X86 flag output parameters. 
Summary:
Add frontend support and expected flags for X86 inline assembly flag
parameters.

Reviewers: craig.topper, rnk, echristo

Subscribers: eraman, nickdesaulniers, void, llvm-commits

Differential Revision: https://reviews.llvm.org/D57394

llvm-svn: 354053
 2019-02-14 19:27:25 +00:00
Reid Kleckner dbc390d0c5 [MS] Update _MSVC_LANG values for C++17 and C++2a 
Fixes PR38262

llvm-svn: 337715
 2018-07-23 17:44:00 +00:00