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Author SHA1 Message Date
serge-sans-paille 3c8bf29f14
Reduce the number of attributes attached to each function 
This takes advantage of the implicit default behavior to reduce the number of
attributes, which in turns reduces compilation time. I've observed -3% in
instruction count when compiling sqlite3 amalgamation with -O0

Differential Revision: https://reviews.llvm.org/D96400
 2021-02-16 16:19:54 +01:00
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