; RUN: opt -loop-accesses -analyze -enable-new-pm=0 < %s | FileCheck %s ; RUN: opt -passes='require,require,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck %s target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" ; We shouldn't quit the analysis if we encounter a pointer without known ; bounds *unless* we actually need to emit a memcheck for it. (We only ; compute bounds for SCEVAddRecs so A[i*i] is deemed not having known bounds.) ; ; for (i = 0; i < 20; ++i) ; A[i*i] *= 2; ; CHECK: for.body: ; CHECK: Report: unsafe dependent memory operations in loop ; CHECK-NOT: Report: cannot identify array bounds ; CHECK: Dependences: ; CHECK: Unknown: ; CHECK: %loadA = load i16, i16* %arrayidxA, align 2 -> ; CHECK: store i16 %mul, i16* %arrayidxA, align 2 define void @f(i16* %a) { entry: br label %for.body for.body: ; preds = %for.body, %entry %ind = phi i64 [ 0, %entry ], [ %add, %for.body ] %access_ind = mul i64 %ind, %ind %arrayidxA = getelementptr inbounds i16, i16* %a, i64 %access_ind %loadA = load i16, i16* %arrayidxA, align 2 %mul = mul i16 %loadA, 2 store i16 %mul, i16* %arrayidxA, align 2 %add = add nuw nsw i64 %ind, 1 %exitcond = icmp eq i64 %add, 20 br i1 %exitcond, label %for.end, label %for.body for.end: ; preds = %for.body ret void }