1; RUN: opt -S -verify-loop-info -irce-print-changed-loops -passes=irce -irce-min-eliminated-checks=51 < %s 2>&1 | FileCheck %s --check-prefixes=CHECK-NO 2; RUN: opt -S -verify-loop-info -irce-print-changed-loops -passes=irce -irce-min-eliminated-checks=50 < %s 2>&1 | FileCheck %s --check-prefixes=CHECK-YES 3 4; CHECK-YES: constrained Loop 5; CHECK-NO-NOT: constrained Loop 6 7declare void @bar(i32) 8 9define i32 @foo(ptr %arr_a, ptr %a_len_ptr, i32 %n) { 10entry: 11 %len.a = load i32, ptr %a_len_ptr, !range !0 12 %first.itr.check = icmp sgt i32 %n, 0 13 br i1 %first.itr.check, label %loop, label %exit, !prof !1 14 15loop: 16 %idx = phi i32 [ 0, %entry ] , [ %idx.next, %backedge ] 17 %abc.a = icmp slt i32 %idx, %len.a 18 br i1 %abc.a, label %in.bounds.a, label %backedge, !prof !2 19 20in.bounds.a: 21 %addr.a = getelementptr i32, ptr %arr_a, i32 %idx 22 %val = load i32, ptr %addr.a 23 call void @bar(i32 %val) 24 br label %backedge 25 26backedge: 27 %idx.next = add i32 %idx, 1 28 %next = icmp slt i32 %idx.next, %n 29 br i1 %next, label %loop, label %exit, !prof !3 30 31exit: 32 ret i32 0 33} 34 35!0 = !{i32 0, i32 2147483647} 36!1 = !{!"branch_weights", i32 1024, i32 1} 37!2 = !{!"branch_weights", i32 1, i32 1} 38!3 = !{!"branch_weights", i32 99, i32 1} 39