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; RUN: opt %loadPolly -polly-print-scops -disable-output < %s | FileCheck %s
;
; void f(long *A, long N, long p) {
; for (long i = 0; i < N; i++)
; A[i + 1] = 0;
; }
;
; The wrap function has no inbounds GEP but the nowrap function has. Therefore,
; we will add the assumption that i+1 won't overflow only to the former.
;
; Note:
; 1152921504606846975 * sizeof(long) <= 2 ^ 63 - 1
; and
; 1152921504606846976 * sizeof(long) > 2 ^ 63 - 1
; with
; sizeof(long) == 8
;
; CHECK: Function: wrap
; CHECK: Invalid Context:
; CHECK-NEXT: [N] -> { : N >= 1152921504606846976 }
;
; CHECK: Function: nowrap
; CHECK: Invalid Context:
; CHECK-NEXT: [N] -> { : false }
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @wrap(i64* %A, i64 %N, i64 %p) {
bb:
%tmp31 = icmp slt i64 0, %N
br i1 %tmp31, label %bb4.lr.ph, label %bb8
bb4.lr.ph: ; preds = %bb
br label %bb4
bb4: ; preds = %bb4.lr.ph, %bb7
%indvars.iv2 = phi i64 [ 0, %bb4.lr.ph ], [ %indvars.iv.next, %bb7 ]
%tmp5 = add nuw nsw i64 %indvars.iv2, 1
%tmp6 = getelementptr i64, i64* %A, i64 %tmp5
store i64 0, i64* %tmp6, align 4
br label %bb7
bb7: ; preds = %bb4
%indvars.iv.next = add nuw nsw i64 %indvars.iv2, 1
%tmp3 = icmp slt i64 %indvars.iv.next, %N
br i1 %tmp3, label %bb4, label %bb2.bb8_crit_edge
bb2.bb8_crit_edge: ; preds = %bb7
br label %bb8
bb8: ; preds = %bb2.bb8_crit_edge, %bb
ret void
}
define void @nowrap(i64* %A, i64 %N, i64 %p) {
bb:
%tmp31 = icmp slt i64 0, %N
br i1 %tmp31, label %bb4.lr.ph, label %bb8
bb4.lr.ph: ; preds = %bb
br label %bb4
bb4: ; preds = %bb4.lr.ph, %bb7
%indvars.iv2 = phi i64 [ 0, %bb4.lr.ph ], [ %indvars.iv.next, %bb7 ]
%tmp5 = add nuw nsw i64 %indvars.iv2, 1
%tmp6 = getelementptr inbounds i64, i64* %A, i64 %tmp5
store i64 0, i64* %tmp6, align 4
br label %bb7
bb7: ; preds = %bb4
%indvars.iv.next = add nuw nsw i64 %indvars.iv2, 1
%tmp3 = icmp slt i64 %indvars.iv.next, %N
br i1 %tmp3, label %bb4, label %bb2.bb8_crit_edge
bb2.bb8_crit_edge: ; preds = %bb7
br label %bb8
bb8: ; preds = %bb2.bb8_crit_edge, %bb
ret void
}
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