[llvm-bugs] [Bug 35546] New: [X86] Warn if a scheduling instregex fails to match any instruction

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35546

            Bug ID: 35546
           Summary: [X86] Warn if a scheduling instregex fails to match
                    any instruction
           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: andrea.dibiagio at gmail.com,
                    andrew.v.tischenko at gmail.com, gadi.haber at intel.com,
                    llvm-bugs at lists.llvm.org, spatel+llvm at rotateright.com
            Blocks: 32325

Working on the scheduler models recently I've noticed several cases where typos
in instregex entries have meant it failed to match any instruction.

It would be very useful if tablegen reported a warning/error if the instregex
fails to match any instruction.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=32325
[Bug 32325] [META][X86] Improve implementation and use of X86 scheduler models
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