1 ; RUN: opt -basicaa -dse -S < %s | FileCheck %s
3 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
5 define void @fn(i8* nocapture %buf) #0 {
8 ; We would not eliminate the first memcpy with data layout, and we should not
9 ; eliminate it without data layout.
11 ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64
12 ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64
15 %arrayidx = getelementptr i8, i8* %buf, i64 18
16 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %arrayidx, i8* %buf, i64 18, i1 false)
17 store i8 1, i8* %arrayidx, align 1
18 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %buf, i8* %arrayidx, i64 18, i1 false)