1 ; RUN: opt < %s -analyze -scalar-evolution \ 2 ; RUN: -scalar-evolution-max-iterations=0 | FileCheck %s 3 ; PR2607 4 5 define i32 @b(i32 %x, i32 %y) nounwind { 6 entry: 7 %cmp2 = icmp slt i32 %y, %x 8 %cond3 = select i1 %cmp2, i32 %y, i32 %x 9 %cmp54 = icmp slt i32 %cond3, -2147483632 10 br i1 %cmp54, label %forinc, label %afterfor 11 12 forinc: ; preds = %forinc, %entry 13 %j.01 = phi i32 [ %dec, %forinc ], [ -2147483632, %entry ] 14 %dec = add i32 %j.01, -1 15 %cmp = icmp slt i32 %y, %x 16 %cond = select i1 %cmp, i32 %y, i32 %x 17 %cmp5 = icmp sgt i32 %dec, %cond 18 br i1 %cmp5, label %forinc, label %afterfor 19 20 afterfor: ; preds = %forinc, %entry 21 %j.0.lcssa = phi i32 [ -2147483632, %entry ], [ %dec, %forinc ] 22 ret i32 %j.0.lcssa 23 } 24 25 ; CHECK: backedge-taken count is (-2147483632 + ((-1 + (-1 * %{{[xy]}})) smax (-1 + (-1 * %{{[xy]}})))) 26 27
