llvm/test/Analysis/DependenceAnalysis/banerjee-overflow.ll

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 6
; RUN: opt < %s -disable-output "-passes=print<da>" 2>&1 \
; RUN:     | FileCheck %s --check-prefixes=CHECK,CHECK-ALL
; RUN: opt < %s -disable-output "-passes=print<da>" -da-enable-dependence-test=banerjee-miv 2>&1 \
; RUN:     | FileCheck %s --check-prefixes=CHECK,CHECK-BANERJEE-MIV

;
; for (int i = 0; i < 2; i++)
;   for (int j = 0; j < 4611686018427387906; j++) {
;     A[i - j + 9223372036854775805] = 0;
;     A[i + j - 5] = 1;
;   }
;
; memory accesses                     | (i,j) == (0,4611686018427387905)
; ------------------------------------|----------------------------------
; A[i - j + 9223372036854775805]      | A[4611686018427387900]
; A[i + j - 5]                        | A[4611686018427387900]
;
define void @banerjee_delta_ovfl(ptr %A) {
; CHECK-LABEL: 'banerjee_delta_ovfl'
; CHECK-NEXT:  Src: store i8 0, ptr %arrayidx1, align 8 --> Dst: store i8 0, ptr %arrayidx1, align 8
; CHECK-NEXT:    da analyze - output [* *]!
; CHECK-NEXT:  Src: store i8 0, ptr %arrayidx1, align 8 --> Dst: store i8 0, ptr %arrayidx2, align 8
; CHECK-NEXT:    da analyze - output [* *|<]!
; CHECK-NEXT:  Src: store i8 0, ptr %arrayidx2, align 8 --> Dst: store i8 0, ptr %arrayidx2, align 8
; CHECK-NEXT:    da analyze - output [* *]!
;
entry:
  br label %for.cond.i

for.cond.i:
  %i = phi i64 [ 0, %entry ], [ %inc.i, %for.inc.i ]
  %cmp.i = icmp slt i64 %i, 2
  br i1 %cmp.i, label %for.body.i, label %for.end.i

for.body.i:
  br label %for.cond.j

for.cond.j:
  %j = phi i64 [ 0, %for.body.i ], [ %inc.j, %for.inc.j ]
  %cmp.j = icmp slt i64 %j, 4611686018427387906
  br i1 %cmp.j, label %for.body.j, label %for.end.j

for.body.j:
  %sub = sub i64 %i, %j
  %add1 = add i64 %sub, 9223372036854775805
  %arrayidx1 = getelementptr i8, ptr %A, i64 %add1
  store i8 0, ptr %arrayidx1, align 8

  %add2 = add i64 %i, %j
  %sub2 = sub i64 %add2, 5
  %arrayidx2 = getelementptr i8, ptr %A, i64 %sub2
  store i8 0, ptr %arrayidx2, align 8

  br label %for.inc.j

for.inc.j:
  %inc.j = add i64 %j, 1
  br label %for.cond.j

for.end.j:
  br label %for.inc.i

for.inc.i:
  %inc.i = add i64 %i, 1
  br label %for.cond.i

for.end.i:
  ret void
}
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK-ALL: {{.*}}
; CHECK-BANERJEE-MIV: {{.*}}