[LLVMbugs] [Bug 21251] New: vbroadcast is not formed

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Sat Oct 11 12:16:05 PDT 2014


            Bug ID: 21251
           Summary: vbroadcast is not formed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: asl at math.spbu.ru
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13190
  --> http://llvm.org/bugs/attachment.cgi?id=13190&action=edit

Consider the attached testcase. It passes with
-x86-experimental-vector-shuffle-lowering=0, so it's clearly a regression from
new vector shuffle lowering code.

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