[llvm-bugs] [Bug 26418] New: Instruction scheduling model for the KNL

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26418

            Bug ID: 26418
           Summary: Instruction scheduling model for the KNL
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: hfinkel at anl.gov
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

We need to have a real instruction scheduling model for the KNL. Aside from
anything else, it seems reasonable to switch the default to be more like
Silvermont than like Haswell, plus there is a significant amount of information
here (under the "MICROARCHITECTURE" heading):

 
https://software.intel.com/en-us/articles/what-disclosures-has-intel-made-about-knights-landing

plus from Avinash's HotChips presentation:

 
http://www.hotchips.org/wp-content/uploads/hc_archives/hc27/HC27.25-Tuesday-Epub/HC27.25.70-Processors-Epub/HC27.25.710-Knights-Landing-Sodani-Intel.pdf

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