1; RUN: opt -disable-output -passes=loop-vectorize -pass-remarks-analysis='.*' -force-vector-width=2 2>&1 %s | FileCheck %s 2 3; Make sure LV does not crash when generating remarks for loops with non-unique 4; exit blocks. 5define i32 @test_non_unique_exit_blocks(ptr nocapture readonly align 4 dereferenceable(1024) %data, i32 %x) { 6; CHECK: loop not vectorized: Cannot vectorize early exit loop 7; 8entry: 9 br label %for.header 10 11for.header: ; preds = %for.cond.lr.ph, %for.body 12 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.latch ] 13 %iv.next = add nuw nsw i64 %iv, 1 14 %exitcond.not = icmp eq i64 %iv.next, 256 15 br i1 %exitcond.not, label %header.exit, label %for.latch 16 17for.latch: 18 %arrayidx = getelementptr inbounds i32, ptr %data, i64 %iv 19 %lv = load i32, ptr %arrayidx, align 4 20 %cmp1 = icmp eq i32 %lv, %x 21 br i1 %cmp1, label %latch.exit, label %for.header 22 23header.exit: ; preds = %for.body 24 ret i32 0 25 26latch.exit: ; preds = %for.body 27 ret i32 %lv 28} 29