1; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 2 3target datalayout = 4"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" 5 6define void @test(i1 %arg) { 7entry: 8 br i1 %arg, label %while.end, label %while.body.lr.ph 9 10while.body.lr.ph: 11 br label %while.body 12 13while.body: 14 %it.sroa.0.091 = phi ptr [ undef, %while.body.lr.ph ], [ %incdec.ptr.i, %while.body ] 15 %incdec.ptr.i = getelementptr inbounds i32, ptr %it.sroa.0.091, i64 1 16 %inc32 = add i32 undef, 1 ; <------------- Make sure we don't set NSW flags to the undef. 17 %cmp.i11 = icmp eq ptr %incdec.ptr.i, undef 18 br i1 %cmp.i11, label %while.end, label %while.body 19 20while.end: 21 ret void 22} 23 24 25