1; RUN: opt -S -passes=loop-vectorize < %s | FileCheck %s
2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
3
4; CHECK-LABEL: @fn1
5define void @fn1() {
6entry-block:
7  br label %middle
8
9middle:
10  %0 = phi {}* [ %3, %middle ], [ inttoptr (i64 0 to {}*), %entry-block ]
11  %1 = bitcast {}* %0 to i8*
12  %2 = getelementptr i8, i8* %1, i64 1
13  %3 = bitcast i8* %2 to {}*
14  %4 = icmp eq i8* %2, undef
15  br i1 %4, label %exit, label %middle
16
17; CHECK:      %[[phi:.*]] = phi {}* [ %3, %middle ], [ null, %entry-block ]
18; CHECK-NEXT: %[[bc1:.*]] = bitcast {}* %[[phi]] to i8*
19; CHECK-NEXT: %[[gep:.*]] = getelementptr i8, i8* %[[bc1]], i64 1
20; CHECK-NEXT: %[[bc2:.*]] = bitcast i8* %[[gep]] to {}*
21; CHECK-NEXT: %[[cmp:.*]] = icmp eq i8* %[[gep]], undef
22; CHECK-NEXT: br i1 %[[cmp]],
23
24exit:
25  ret void
26}
27