| ; RUN: opt < %s -analyze -scalar-evolution \ |
| ; RUN: -scalar-evolution-max-iterations=0 | FileCheck %s |
| ; PR2607 |
| |
| define i32 @b(i32 %x, i32 %y) nounwind { |
| entry: |
| %cmp2 = icmp slt i32 %y, %x |
| %cond3 = select i1 %cmp2, i32 %y, i32 %x |
| %cmp54 = icmp slt i32 %cond3, -2147483632 |
| br i1 %cmp54, label %forinc, label %afterfor |
| |
| forinc: ; preds = %forinc, %entry |
| %j.01 = phi i32 [ %dec, %forinc ], [ -2147483632, %entry ] |
| %dec = add i32 %j.01, -1 |
| %cmp = icmp slt i32 %y, %x |
| %cond = select i1 %cmp, i32 %y, i32 %x |
| %cmp5 = icmp sgt i32 %dec, %cond |
| br i1 %cmp5, label %forinc, label %afterfor |
| |
| afterfor: ; preds = %forinc, %entry |
| %j.0.lcssa = phi i32 [ -2147483632, %entry ], [ %dec, %forinc ] |
| ret i32 %j.0.lcssa |
| } |
| |
| ; CHECK: backedge-taken count is (-2147483632 + ((-1 + (-1 * %{{[xy]}})) smax (-1 + (-1 * %{{[xy]}})))) |
| |
