[LLVMbugs] [Bug 22867] New: [avx512] fail to select sign_extend

[bugzilla-daemon at llvm.org]

https:llvm.org/bugs/show_bug.cgi?id=22867

            Bug ID: 22867
           Summary: [avx512] fail to select sign_extend
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: asaf.badouh at intel.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 14022
  --> https:llvm.org/bugs/attachment.cgi?id=14022&action=edit
test case

fail to select sext in the following code,
  %0 = phi i1 [ true, %for.body ], [ false, %lor.rhs ]
  %cond = sext i1 %0 to i32

repro:
llc -mcpu=knl sext_fail.ll

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