1; RUN: opt -loop-unroll -disable-output < %s 2; PR11361 3 4; This tests for an iterator invalidation issue. 5 6target 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" 7target triple = "x86_64-unknown-linux-gnu" 8 9define void @func_1() nounwind uwtable { 10entry: 11 br label %for.cond8.preheader 12 13for.cond8.preheader: ; preds = %for.inc15, %entry 14 %l_1264.04 = phi i32 [ 0, %entry ], [ %add.i, %for.inc15 ] 15 %l_1330.0.03 = phi i80 [ undef, %entry ], [ %ins.lcssa, %for.inc15 ] 16 br label %for.body9 17 18for.body9: ; preds = %for.body9, %for.cond8.preheader 19 %l_1330.0.12 = phi i80 [ %l_1330.0.03, %for.cond8.preheader ], [ %ins, %for.body9 ] 20 %storemerge1 = phi i32 [ 7, %for.cond8.preheader ], [ %sub, %for.body9 ] 21 %tmp = lshr i80 %l_1330.0.12, 8 22 %tmp1 = trunc i80 %tmp to i8 23 %inc12 = add i8 %tmp1, 1 24 %tmp2 = zext i8 %inc12 to i80 25 %tmp3 = shl nuw nsw i80 %tmp2, 8 26 %mask = and i80 %l_1330.0.12, -65281 27 %ins = or i80 %tmp3, %mask 28 %sub = add nsw i32 %storemerge1, -1 29 %tobool = icmp eq i32 %sub, 0 30 br i1 %tobool, label %for.inc15, label %for.body9 31 32for.inc15: ; preds = %for.body9 33 %ins.lcssa = phi i80 [ %ins, %for.body9 ] 34 %sext = shl i32 %l_1264.04, 24 35 %conv.i = ashr exact i32 %sext, 24 36 %add.i = add nsw i32 %conv.i, 1 37 %cmp = icmp slt i32 %add.i, 3 38 br i1 %cmp, label %for.cond8.preheader, label %for.end16 39 40for.end16: ; preds = %for.inc15 41 ret void 42} 43