1 ; RUN: opt < %s -indvars 2 ; PR4258 3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" 4 target triple = "i386-pc-linux-gnu" 5 6 define void @0(i32*, i32*, i32, i32) nounwind { 7 br i1 false, label %bb.nph1.preheader, label %.outer._crit_edge 8 9 bb.nph1.preheader: ; preds = %4 10 %smax = select i1 false, i32 -1, i32 0 ; <i32> [#uses=1] 11 %tmp12 = sub i32 0, %smax ; <i32> [#uses=1] 12 br label %bb.nph1 13 14 bb.nph1: ; preds = %.outer, %bb.nph1.preheader 15 br i1 undef, label %bb.nph3.preheader, label %.outer 16 17 bb.nph3.preheader: ; preds = %bb.nph1 18 br label %bb.nph3 19 20 bb.nph3: ; preds = %bb.nph3, %bb.nph3.preheader 21 %indvar7 = phi i32 [ %indvar.next8, %bb.nph3 ], [ 0, %bb.nph3.preheader ] ; <i32> [#uses=3] 22 %tmp9 = mul i32 %indvar7, -1 ; <i32> [#uses=1] 23 %tmp13 = add i32 %tmp9, %tmp12 ; <i32> [#uses=1] 24 %tmp14 = add i32 %tmp13, -2 ; <i32> [#uses=1] 25 %5 = icmp sgt i32 %tmp14, 0 ; <i1> [#uses=1] 26 %indvar.next8 = add i32 %indvar7, 1 ; <i32> [#uses=1] 27 br i1 %5, label %bb.nph3, label %.outer.loopexit 28 29 .outer.loopexit: ; preds = %bb.nph3 30 %indvar7.lcssa = phi i32 [ %indvar7, %bb.nph3 ] ; <i32> [#uses=0] 31 br label %.outer 32 33 .outer: ; preds = %.outer.loopexit, %bb.nph1 34 br i1 undef, label %bb.nph1, label %.outer._crit_edge.loopexit 35 36 .outer._crit_edge.loopexit: ; preds = %.outer 37 br label %.outer._crit_edge 38 39 .outer._crit_edge: ; preds = %.outer._crit_edge.loopexit, %4 40 ret void 41 } 42
