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1; RUN: opt -verify-loop-info -irce-print-changed-loops -passes=irce -S < %s 2>&1 | FileCheck %s2 3; CHECK-LABEL: irce: in function test_01: constrained Loop at depth 2 containing:4 5define void @test_01(i64 %len) {6 7; CHECK-LABEL: @test_01(8 9entry:10 br label %loop11 12check:13 %entry_check = icmp eq i32 %idx.next, 014 br i1 %entry_check, label %exit, label %loop15 16loop:17 %idx = phi i32 [ 1, %entry ], [ %idx.next, %check ]18 %idx_ext = sext i32 %idx to i6419 br label %inner_loop20 21inner_loop:22 %iv = phi i64 [ 0, %loop ], [ %iv.next, %inner_backedge ]23 %iv.next = add nuw nsw i64 %iv, 124 %inner_check = icmp slt i64 %iv.next, %idx_ext25 br i1 %inner_check, label %inner, label %outer_check26 27inner:28 %iv_next_check = icmp slt i64 %iv.next, 10029 br i1 %iv_next_check, label %inner_backedge, label %exit30 31inner_backedge:32 %cond = icmp eq i64 %iv.next, 10033 br i1 %cond, label %exit, label %inner_loop34 35outer_check:36 %idx.next = add i32 %idx, 137 %loopdone = icmp slt i32 %idx.next, 238 br i1 %loopdone, label %check, label %exit39 40exit:41 ret void42}43