1; RUN: opt -irce-print-changed-loops -S -verify-loop-info -irce -verify < %s 2>&1 | FileCheck %s 2; RUN: opt -irce-print-changed-loops -S -verify-loop-info -passes='require<branch-prob>,loop(irce)' -verify < %s 2>&1 | FileCheck %s 3 4; CHECK-NOT: constrained loop 5 6define void @single_access_no_preloop_no_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) { 7 entry: 8 %first.itr.check = icmp sgt i32 %n, 0 9 br i1 %first.itr.check, label %loop, label %exit 10 11 loop: 12 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ] 13 %idx.next = add i32 %idx, 1 14 %len = load i32, i32* %a_len_ptr, !range !0 15 %abc = icmp slt i32 %idx, %len 16 br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 17 18 in.bounds: 19 %addr = getelementptr i32, i32* %arr, i32 %idx 20 store i32 0, i32* %addr 21 %next = icmp slt i32 %idx.next, %n 22 br i1 %next, label %loop, label %exit 23 24 out.of.bounds: 25 ret void 26 27 exit: 28 ret void 29} 30 31!0 = !{i32 0, i32 2147483647} 32!1 = !{!"branch_weights", i32 64, i32 4} 33