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| ; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
;
; void f(int *A, int N, int p) {
; for (int i = 0; i < N; i++)
; A[i + 30] = 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: 2147483618 + 30 == 2 ^ 31
; CHECK: Function: wrap
;
; CHECK: Context:
; CHECK-NEXT: [N] -> { : -2147483648 <= N <= 2147483647 }
;
; CHECK: Invalid Context:
; CHECK-NEXT: [N] -> { : N >= 2147483619 }
target datalayout = "e-m:e-i32:64-f80:128-n8:16:32:64-S128"
define void @wrap(i32* %A, i32 %N, i32 %p) {
bb:
br label %bb2
bb2: ; preds = %bb7, %bb
%indvars.iv = phi i32 [ %indvars.iv.next, %bb7 ], [ 0, %bb ]
%tmp3 = icmp slt i32 %indvars.iv, %N
br i1 %tmp3, label %bb4, label %bb8
bb4: ; preds = %bb2
%tmp5 = add i32 %indvars.iv, 30
%tmp6 = getelementptr i32, i32* %A, i32 %tmp5
store i32 0, i32* %tmp6, align 4
br label %bb7
bb7: ; preds = %bb4
%indvars.iv.next = add nuw nsw i32 %indvars.iv, 1
br label %bb2
bb8: ; preds = %bb2
ret void
}
|