1 ; RUN: opt -loop-accesses -analyze < %s | FileCheck %s 2 ; RUN: opt -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck %s 3 4 ; for (unsigned i = 0; i < 100; i++) { 5 ; A[i+8] = B[i] + 2; 6 ; C[i] = A[i] * 2; 7 ; } 8 9 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 10 11 define void @f(i32* %A, i32* %B, i32* %C, i64 %N) { 12 13 ; CHECK: Dependences: 14 ; CHECK-NEXT: Forward: 15 ; CHECK-NEXT: store i32 %a_p1, i32* %Aidx_ahead, align 4 -> 16 ; CHECK-NEXT: %a = load i32, i32* %Aidx, align 4 17 18 entry: 19 br label %for.body 20 21 for.body: ; preds = %for.body, %entry 22 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 23 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 24 25 %idx = add nuw nsw i64 %indvars.iv, 8 26 27 %Aidx_ahead = getelementptr inbounds i32, i32* %A, i64 %idx 28 %Bidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv 29 %Cidx = getelementptr inbounds i32, i32* %C, i64 %indvars.iv 30 %Aidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv 31 32 %b = load i32, i32* %Bidx, align 4 33 %a_p1 = add i32 %b, 2 34 store i32 %a_p1, i32* %Aidx_ahead, align 4 35 36 %a = load i32, i32* %Aidx, align 4 37 %c = mul i32 %a, 2 38 store i32 %c, i32* %Cidx, align 4 39 40 %exitcond = icmp eq i64 %indvars.iv.next, %N 41 br i1 %exitcond, label %for.end, label %for.body 42 43 for.end: ; preds = %for.body 44 ret void 45 } 46
