llvm/test/Analysis/Delinearization/multidim_only_ivs_2d.ll

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

; Derived from the following code:
;
; void foo(long n, long m, double A[n][m]) {
;   for (long i = 0; i < n; i++)
;     for (long j = 0; j < m; j++)
;       A[i][j] = 1.0;
; }

define void @foo(i64 %n, i64 %m, ptr %A) {
; CHECK-LABEL: 'foo'
; CHECK-NEXT:  Inst: %val = load double, ptr %arrayidx, align 8
; CHECK-NEXT:  AccessFunction: {{\{\{}}0,+,(8 * %m)}<%for.i>,+,8}<%for.j>
; CHECK-NEXT:  Base offset: %A
; CHECK-NEXT:  ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
; CHECK-NEXT:  ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
; CHECK-EMPTY:
; CHECK-NEXT:  Inst: store double %val, ptr %arrayidx, align 8
; CHECK-NEXT:  AccessFunction: {{\{\{}}0,+,(8 * %m)}<%for.i>,+,8}<%for.j>
; CHECK-NEXT:  Base offset: %A
; CHECK-NEXT:  ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
; CHECK-NEXT:  ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
;
entry:
  br label %for.i

for.i:
  %i = phi i64 [ 0, %entry ], [ %i.inc, %for.i.inc ]
  %tmp = mul nsw i64 %i, %m
  br label %for.j

for.j:
  %j = phi i64 [ 0, %for.i ], [ %j.inc, %for.j ]
  %vlaarrayidx.sum = add i64 %j, %tmp
  %arrayidx = getelementptr inbounds double, ptr %A, i64 %vlaarrayidx.sum
  %val = load double, ptr %arrayidx
  store double %val, ptr %arrayidx
  %j.inc = add nsw i64 %j, 1
  %j.exitcond = icmp eq i64 %j.inc, %m
  br i1 %j.exitcond, label %for.i.inc, label %for.j

for.i.inc:
  %i.inc = add nsw i64 %i, 1
  %i.exitcond = icmp eq i64 %i.inc, %n
  br i1 %i.exitcond, label %end, label %for.i

end:
  ret void
}