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1; RUN: opt < %s "-passes=print<scalar-evolution>" -disable-output 2>&1 | FileCheck %s2; PR20023 4; CHECK: Loop %loop: backedge-taken count is (100 + (-100 smax %n))5define void @foo(i8 %n) {6entry:7 br label %loop8loop:9 %i = phi i8 [ -100, %entry ], [ %i.inc, %next ]10 %cond = icmp slt i8 %i, %n11 br i1 %cond, label %next, label %return12next:13 %i.inc = add i8 %i, 114 br label %loop15return:16 ret void17}18