1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 2 3 target 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 target triple = "x86_64-apple-macosx10.7.0" 6 7 define void @test() { 8 entry: 9 br i1 undef, label %while.end, label %while.body.lr.ph 10 11 while.body.lr.ph: 12 br label %while.body 13 14 while.body: 15 %it.sroa.0.091 = phi i32* [ undef, %while.body.lr.ph ], [ %incdec.ptr.i, %while.body ] 16 %incdec.ptr.i = getelementptr inbounds i32* %it.sroa.0.091, i64 1 17 %inc32 = add i32 undef, 1 ; <------------- Make sure we don't set NSW flags to the undef. 18 %cmp.i11 = icmp eq i32* %incdec.ptr.i, undef 19 br i1 %cmp.i11, label %while.end, label %while.body 20 21 while.end: 22 ret void 23 } 24 25 26
