[llvm-bugs] [Bug 38445] New: llvm optimizer abort in O2

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=38445

            Bug ID: 38445
           Summary: llvm optimizer abort in O2
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: santosh.zanjurne at amd.com
                CC: llvm-bugs at lists.llvm.org

The regression started from svn r338380. testcase attached.

$ opt testcase.ll -O2
PHI nodes not grouped at top of basic block!
  %e1.sroa.20.0 = phi <2 x float> [ %28, %if.then.i ], [ %11, %entry ]
label %_ZN40vtkUnstructuredGridQuadricDecimationVec49NormalizeEv.exit
PHI nodes not grouped at top of basic block!
  %e2.sroa.21.0 = phi <2 x float> [ %51, %if.then.i143 ], [ %41,
%_ZN40vtkUnstructuredGridQuadricDecimationVec49NormalizeEv.exit ]
label %_ZN40vtkUnstructuredGridQuadricDecimationVec49NormalizeEv.exit144
LLVM ERROR: Broken function found, compilation aborted!

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