llvm/test/Analysis/LoopAccessAnalysis/int64-min-stride.ll

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
; RUN: opt -passes='print<access-info>' -S -disable-output %s 2>&1 | FileCheck %s

define void @int64_min_stride(ptr %A, i64 %n) {
; CHECK-LABEL: 'int64_min_stride'
; CHECK-NEXT:    loop:
; CHECK-NEXT:      Memory dependences are safe
; CHECK-NEXT:      Dependences:
; CHECK-NEXT:      Run-time memory checks:
; CHECK-NEXT:      Grouped accesses:
; CHECK-NEXT:        Group GRP0:
; CHECK-NEXT:          (Low: (-9223372036854775808 + (-9223372036854775808 * %n) + %A) High: (5 + %A))
; CHECK-NEXT:            Member: {(4 + %A),+,-9223372036854775808}<%loop>
; CHECK-NEXT:            Member: {%A,+,-9223372036854775808}<%loop>
; CHECK-EMPTY:
; CHECK-NEXT:      Non vectorizable stores to invariant address were not found in loop.
; CHECK-NEXT:      SCEV assumptions:
; CHECK-NEXT:      {%A,+,-9223372036854775808}<%loop> Added Flags: <nusw>
; CHECK-NEXT:      {(4 + %A),+,-9223372036854775808}<%loop> Added Flags: <nusw>
; CHECK-EMPTY:
; CHECK-NEXT:      Expressions re-written:
;
entry:
  br label %loop

loop:
  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
  %off = mul i64 %iv, -9223372036854775808
  %off2 = add i64 %off, 4
  %a = getelementptr i8, ptr %A, i64 %off
  %a2 = getelementptr i8, ptr %A, i64 %off2
  %v = load i8, ptr %a2
  store i8 %v, ptr %a
  %iv.next = add i64 %iv, 1
  %ec = icmp eq i64 %iv.next, %n
  br i1 %ec, label %exit, label %loop

exit:
  ret void
}