[LV] Add interleave only test case with reduction requiring casts.

exit:

  ret void

}

define i16 @reduction_with_casts() {

; CHECK-LABEL: define i16 @reduction_with_casts() {

; CHECK:       vector.body:

; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH:%.+]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY:%.+]] ]

; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP2:%.*]], [[VECTOR_BODY]] ]

; CHECK-NEXT:    [[VEC_PHI1:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[TMP3:%.*]], [[VECTOR_BODY]] ]

; CHECK-NEXT:    [[TMP0:%.*]] = and i32 [[VEC_PHI]], 65535

; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[VEC_PHI1]], 65535

; CHECK-NEXT:    [[TMP2]] = add i32 [[TMP0]], 1

; CHECK-NEXT:    [[TMP3]] = add i32 [[TMP1]], 1

; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2

; CHECK-NEXT:    [[TMP4:%.*]] = icmp eq i32 [[INDEX_NEXT]], 9998

; CHECK-NEXT:    br i1 [[TMP4]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]]

; CHECK:       middle.block:

; CHECK-NEXT:    [[BIN_RDX:%.*]] = add i32 [[TMP3]], [[TMP2]]

; CHECK-NEXT:    br i1 false, label [[EXIT:%.*]], label %scalar.ph

;

entry:

  br label %loop

loop:

  %count.0.in1 = phi i32 [ 0, %entry ], [ %add, %loop ]

  %iv = phi i16 [ 1, %entry ], [ %iv.next, %loop ]

  %conv1 = and i32 %count.0.in1, 65535

  %add = add nuw nsw i32 %conv1, 1

  %iv.next = add i16 %iv, 1

  %cmp = icmp eq i16 %iv.next, 10000

  br i1 %cmp, label %exit, label %loop

exit:

  %add.lcssa = phi i32 [ %add, %loop ]

  %count.0 = trunc i32 %add.lcssa to i16

  ret i16 %count.0

}

;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:

; DBG: {{.*}}