llvm/polly/test/ScopInfo/granularity_scalar-indep_noepilogue.ll

; RUN: opt %loadNPMPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions '-passes=print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s -match-full-lines
;
; This case has no explicit epilogue for PHI writes because it would
; have a scalar dependency to the previous statement.
;
; for (int j = 0; j < n; j += 1) {
; bodyA:
;   double valA = A[0];
;   A[0] = valA;
;
; bodyB:
;   phi = valA;
; }
;
define void @func(i32 %n, ptr noalias nonnull %A) {
entry:
  br label %for

for:
  %j = phi i32 [0, %entry], [%j.inc, %inc]
  %j.cmp = icmp slt i32 %j, %n
  br i1 %j.cmp, label %bodyA, label %exit

    bodyA:
      %valA = load double, ptr %A
      store double %valA, ptr %A
      br label %bodyB

    bodyB:
      %phi = phi double [%valA, %bodyA]
      br label %inc

inc:
  %j.inc = add nuw nsw i32 %j, 1
  br label %for

exit:
  br label %return

return:
  ret void
}


; CHECK:      Statements {
; CHECK-NEXT:     Stmt_bodyA
; CHECK-NEXT:         Domain :=
; CHECK-NEXT:             [n] -> { Stmt_bodyA[i0] : 0 <= i0 < n };
; CHECK-NEXT:         Schedule :=
; CHECK-NEXT:             [n] -> { Stmt_bodyA[i0] -> [i0] };
; CHECK-NEXT:         ReadAccess :=       [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT:             [n] -> { Stmt_bodyA[i0] -> MemRef_A[0] };
; CHECK-NEXT:         MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT:             [n] -> { Stmt_bodyA[i0] -> MemRef_A[0] };
; CHECK-NEXT:         MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT:             [n] -> { Stmt_bodyA[i0] -> MemRef_phi__phi[] };
; CHECK-NEXT:         Instructions {
; CHECK-NEXT:               %valA = load double, ptr %A, align 8
; CHECK-NEXT:               store double %valA, ptr %A, align 8
; CHECK-NEXT:         }
; CHECK-NEXT: }