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