forked from OSchip/llvm-project
81 lines
2.5 KiB
LLVM
81 lines
2.5 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %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] -> { : 1 = 0 }
|
|
;
|
|
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
|
|
}
|