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