1; RUN: opt -passes='print<access-info>' -disable-output < %s 2>&1 | FileCheck %s 2 3; Handle memchecks involving loop-invariant addresses: 4; 5; extern int *A, *b; 6; for (i = 0; i < N; ++i) { 7; A[i] = b; 8; } 9 10target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 11 12; CHECK: Memory dependences are safe with run-time checks 13; CHECK: Run-time memory checks: 14; CHECK-NEXT: Check 0: 15; CHECK-NEXT: Comparing group ({{.*}}): 16; CHECK-NEXT: %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind 17; CHECK-NEXT: Against group ({{.*}}): 18; CHECK-NEXT: ptr %b 19 20define void @f(ptr %a, ptr %b) { 21entry: 22 br label %for.body 23 24for.body: ; preds = %for.body, %entry 25 %ind = phi i64 [ 0, %entry ], [ %inc, %for.body ] 26 27 %arrayidxA = getelementptr inbounds i32, ptr %a, i64 %ind 28 29 %loadB = load i32, ptr %b, align 4 30 store i32 %loadB, ptr %arrayidxA, align 4 31 32 %inc = add nuw nsw i64 %ind, 1 33 %exitcond = icmp eq i64 %inc, 20 34 br i1 %exitcond, label %for.end, label %for.body 35 36for.end: ; preds = %for.body 37 ret void 38} 39