; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -disable-output "-passes=print<da>" 2>&1 | FileCheck %s

; Test case for SmallBitVector bounds checking bug in DependenceAnalysis.
; This test ensures that loop index mapping functions don't cause out-of-bounds
; access to SmallBitVector when loop depths exceed MaxLevels.

define void @bounds_check_test(ptr %a) {
; CHECK-LABEL: 'bounds_check_test'
; CHECK-NEXT:  Src: store i8 0, ptr %idx, align 1 --> Dst: store i8 0, ptr %idx, align 1
; CHECK-NEXT:    da analyze - output [*]!
;
entry:
  br label %loop

loop:
  %i = phi i64 [ 0, %entry ], [ %i.next, %loop ]
  %and = and i64 %i, 1  ; Creates index 0 or 1
  %idx = getelementptr inbounds [4 x [4 x i8]], ptr %a, i64 0, i64 %and, i64 %i
  store i8 0, ptr %idx
  %i.next = add i64 %i, 1
  %exitcond.not = icmp slt i64 %i.next, 4
  br i1 %exitcond.not, label %loop, label %exit

exit:
  ret void
}