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1; RUN: opt -passes='print<access-info>' -aa-pipeline='basic-aa' -disable-output < %s 2>&1 | FileCheck %s2 3; If the arrays don't alias this loop is safe with no memchecks:4; for (i = 0; i < n; i++)5; A[i] = A[i] * B[i] * C[i];6 7target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"8target triple = "x86_64-apple-macosx10.10.0"9 10; Check the loop-carried forward anti-dep between the load of A[i+1] and the11; store of A[i];12 13; CHECK: Memory dependences are safe{{$}}14; CHECK-NEXT: Dependences:15; CHECK-NEXT: Forward:16; CHECK-NEXT: %loadA_plus_2 = load i16, ptr %arrayidxA_plus_2, align 2 ->17; CHECK-NEXT: store i16 %mul1, ptr %arrayidxA, align 218 19 20define void @f(ptr noalias %a,21 ptr noalias %b,22 ptr noalias %c) {23entry:24 br label %for.body25 26for.body: ; preds = %for.body, %entry27 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]28 29 %add = add nuw nsw i64 %ind, 130 31 %arrayidxA_plus_2 = getelementptr inbounds i16, ptr %a, i64 %add32 %loadA_plus_2 = load i16, ptr %arrayidxA_plus_2, align 233 34 %arrayidxB = getelementptr inbounds i16, ptr %b, i64 %ind35 %loadB = load i16, ptr %arrayidxB, align 236 37 %arrayidxC = getelementptr inbounds i16, ptr %c, i64 %ind38 %loadC = load i16, ptr %arrayidxC, align 239 40 %mul = mul i16 %loadB, %loadA_plus_241 %mul1 = mul i16 %mul, %loadC42 43 %arrayidxA = getelementptr inbounds i16, ptr %a, i64 %ind44 store i16 %mul1, ptr %arrayidxA, align 245 46 %exitcond = icmp eq i64 %add, 2047 br i1 %exitcond, label %for.end, label %for.body48 49for.end: ; preds = %for.body50 ret void51}52