diff --git a/test/Transforms/IRCE/low-becount.ll b/test/Transforms/IRCE/low-becount.ll new file mode 100644 index 00000000000..2ddaf19f585 --- /dev/null +++ b/test/Transforms/IRCE/low-becount.ll @@ -0,0 +1,32 @@ +; RUN: opt -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s + +; CHECK-NOT: constrained Loop + +define void @low_profiled_be_count(i32 *%arr, i32 *%a_len_ptr, i32 %n) { + entry: + %len = load i32* %a_len_ptr, !range !0 + %first.itr.check = icmp sgt i32 %n, 0 + br i1 %first.itr.check, label %loop, label %exit + + loop: + %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ] + %idx.next = add i32 %idx, 1 + %abc = icmp slt i32 %idx, %len + br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 + + in.bounds: + %addr = getelementptr i32* %arr, i32 %idx + store i32 0, i32* %addr + %next = icmp slt i32 %idx.next, %n + br i1 %next, label %loop, label %exit, !prof !2 + + out.of.bounds: + ret void + + exit: + ret void +} + +!0 = !{i32 0, i32 2147483647} +!1 = !{!"branch_weights", i32 64, i32 4} +!2 = !{!"branch_weights", i32 4, i32 64}