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; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
; This test case verifies that the statement domain of the invariant access
; is the universe. In earlier versions of Polly, we accidentally computed an
; empty access domain which resulted in invariant accesses not being executed
; and consequently undef values being used.
; CHECK: Invariant Accesses: {
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_loop_next[i0] -> MemRef_a[1] };
; CHECK-NEXT: Execution Context: { : }
; CHECK-NEXT: }
; CHECK-NEXT: Context:
; CHECK-NEXT: { : }
; CHECK-NEXT: Assumed Context:
; CHECK-NEXT: { : }
; CHECK-NEXT: Invalid Context:
; CHECK-NEXT: { : false }
; CHECK: Statements {
; CHECK-NEXT: Stmt_loop
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_loop[i0] : 0 <= i0 <= 1 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_loop[i0] -> [i0, 0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: { Stmt_loop[i0] -> MemRef_val__phi[] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_loop[i0] -> MemRef_B[i0] };
; CHECK-NEXT: Stmt_loop_next
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_loop_next[0] };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_loop_next[i0] -> [0, 1] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: { Stmt_loop_next[i0] -> MemRef_val__phi[] };
; CHECK-NEXT: }
define void @foo(float* %a, float* noalias %B) {
entry:
br label %loop
loop:
%indvar = phi i64 [0, %entry], [%indvar.next, %loop.next]
%val = phi float [1.0, %entry], [%a.val, %loop.next]
%indvar.next = add nuw nsw i64 %indvar, 1
%ptr = getelementptr float, float* %B, i64 %indvar
store float %val, float* %ptr
%icmp = icmp eq i64 %indvar.next, 2
br i1 %icmp, label %ret, label %loop.next
loop.next:
%Aptr = getelementptr float, float* %a, i64 %indvar.next
%a.val = load float, float* %Aptr
br label %loop
ret:
ret void
}
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