1; RUN: opt -passes='print<access-info>' %s -disable-output 2>&1 | FileCheck %s 2 3; This test defends against accidentally using alloc size instead of store size when performing run-time 4; boundary check of memory accesses. The IR in this file is based on 5; llvm/test/Analysis/LoopAccessAnalysis/memcheck-off-by-one-error.ll. 6; Here, we use i19 instead of i64 because it has a different alloc size to its store size. 7 8;CHECK: function 'fastCopy': 9;CHECK: (Low: %op High: (27 + %op)) 10;CHECK: (Low: %src High: (27 + %src)) 11 12define void @fastCopy(ptr nocapture readonly %src, ptr nocapture %op) { 13entry: 14 br label %while.body.preheader 15 16while.body.preheader: ; preds = %entry 17 br label %while.body 18 19while.body: ; preds = %while.body.preheader, %while.body 20 %len.addr.07 = phi i32 [ %sub, %while.body ], [ 32, %while.body.preheader ] 21 %op.addr.06 = phi ptr [ %add.ptr1, %while.body ], [ %op, %while.body.preheader ] 22 %src.addr.05 = phi ptr [ %add.ptr, %while.body ], [ %src, %while.body.preheader ] 23 %0 = load i19, ptr %src.addr.05, align 8 24 store i19 %0, ptr %op.addr.06, align 8 25 %add.ptr = getelementptr inbounds i8, ptr %src.addr.05, i19 8 26 %add.ptr1 = getelementptr inbounds i8, ptr %op.addr.06, i19 8 27 %sub = add nsw i32 %len.addr.07, -8 28 %cmp = icmp sgt i32 %len.addr.07, 8 29 br i1 %cmp, label %while.body, label %while.end.loopexit 30 31while.end.loopexit: ; preds = %while.body 32 br label %while.end 33 34while.end: ; preds = %while.end.loopexit, %entry 35 ret void 36} 37