[llvm-bugs] [Bug 32325] New: [META][X86] Improve implementation and use of X86 scheduler models

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=32325

            Bug ID: 32325
           Summary: [META][X86] Improve implementation and use of X86
                    scheduler models
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm-dev at redking.me.uk
                CC: andrew.v.tischenko at gmail.com, craig.topper at gmail.com,
                    davide at freebsd.org, filcab at gmail.com,
                    llvm-bugs at lists.llvm.org, spatel+llvm at rotateright.com

Meta ticket covering issues with the x86 scheduler models, which currently
include:

X86ScheduleAtom.td
X86SchedSandyBridge.td
X86SchedHaswell.td
X86ScheduleSLM.td
X86ScheduleBtVer2.td

Including incorrect latency/throughput values and resources.

Also covers possible improvements to how we can use the schedulers to improve
performance (e.g. use in the machine combiner for better instruction
selection).

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