[llvm-bugs] [Bug 37790] New: [llvm-mca] hangs with int3/stmxcsr input

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=37790

            Bug ID: 37790
           Summary: [llvm-mca] hangs with int3/stmxcsr input
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: greg.bedwell at sony.com
                CC: andrea.dibiagio at gmail.com, llvm-bugs at lists.llvm.org,
                    llvm-dev at redking.me.uk, matthew.davis at sony.com

Tested using r334380.

$ cat y.s
int3
stmxcsr  (%rsp)

$ llvm-mca -mcpu=btver2 y.s
<hangs>


as demonstrated at https://godbolt.org/g/47rem6

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