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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
Andrey Turetskiy 5f1cf5fa66 [X86] Add "x87" in x86 target feature map. 
Differential Revision: http://reviews.llvm.org/D13980

llvm-svn: 264149
 2016-03-23 11:15:10 +00:00