forked from OSchip/llvm-project
45 lines
1.3 KiB
LLVM
45 lines
1.3 KiB
LLVM
; RUN: opt %loadPolly -polly-print-scops -disable-output < %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
|
|
}
|