[llvm-bugs] [Bug 41492] New: LLVM JIT generates invalid instructions for the CPU INTEL® PENTIUM® GOLD PROCESSOR 4415Y which is detected as being "Skylake"

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41492

            Bug ID: 41492
           Summary: LLVM JIT generates invalid instructions for the CPU
                    INTEL® PENTIUM® GOLD PROCESSOR 4415Y which is detected
                    as being "Skylake"
           Product: new-bugs
           Version: 8.0
          Hardware: PC
                OS: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: bique.alexandre at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Hi,

It seems that LLVM recognize the following CPU as being Skylake and generates
instructions for it that it can't decode.

https://www.intel.com/content/www/us/en/products/processors/pentium/4415y.html?_ga=2.61427049.456146392.1555206399-1251997790.1555206399

The issue has been reported on Windows using a Microsoft Surface Go base model
(4gb RAM, Intel Pentium Gold 4415Y processor) laptop.

Regards,
Alexandre

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