[llvm-bugs] [Bug 48727] New: Infinite loop compiling for AVX512

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=48727

            Bug ID: 48727
           Summary: Infinite loop compiling for AVX512
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: benny.kra at gmail.com
                CC: craig.topper at gmail.com, llvm-bugs at lists.llvm.org,
                    llvm-dev at redking.me.uk, pengfei.wang at intel.com,
                    spatel+llvm at rotateright.com

Created attachment 24374
  --> https://bugs.llvm.org/attachment.cgi?id=24374&action=edit
reduced test case

$ llc < bugpoint-reduced-simplified.ll -mcpu=skylake
works

$ llc < bugpoint-reduced-simplified.ll -mcpu=skylake-avx512
hangs forever

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