llvm/test/Transforms/LoopVectorize/lcssa-crash.ll

; RUN: opt < %s  -loop-vectorize -force-vector-width=4 

target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%type1 = type { %type2 }
%type2 = type { [0 x i8*], i8**, i32, i32, i32 }

define void @test() nounwind uwtable align 2 {
  br label %for.body.lr.ph.i.i.i

for.body.lr.ph.i.i.i:
  br label %for.body.i.i.i

for.body.i.i.i:
  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc.i.i.i ], [ 0, %for.body.lr.ph.i.i.i ]
  br label %for.inc.i.i.i

for.inc.i.i.i:
  %indvars.iv.next = add i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond = icmp ne i32 %lftr.wideiv, undef
  br i1 %exitcond, label %for.body.i.i.i, label %for.end.i.i.i

for.end.i.i.i:
  %lcssa = phi %type1* [ undef, %for.inc.i.i.i ]
  unreachable
}