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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -aa-pipeline=tbaa,basic-aa -passes=memcpyopt,instcombine < %s | FileCheck %s
target datalayout = "e-p:64:64:64"
; The second memcpy is redundant and can be deleted. There's an intervening store, but
; it has a TBAA tag which declares that it is unrelated.
define void @foo(ptr nocapture %p, ptr nocapture %q, ptr nocapture %s) nounwind {
; CHECK: @foo
; CHECK-NEXT: tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(16) %p, ptr noundef nonnull align 1 dereferenceable(16) %q, i64 16, i1 false), !tbaa !0
; CHECK-NEXT: store i8 2, ptr %s, align 1, !tbaa [[TAGA:!.*]]
; CHECK-NEXT: ret void
tail call void @llvm.memcpy.p0.p0.i64(ptr %p, ptr %q, i64 16, i1 false), !tbaa !2
store i8 2, ptr %s, align 1, !tbaa !1
tail call void @llvm.memcpy.p0.p0.i64(ptr %q, ptr %p, i64 16, i1 false), !tbaa !2
ret void
}
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind
; CHECK: [[TAGA]] = !{[[TYPEA:!.*]], [[TYPEA]], i64 0}
; CHECK: [[TYPEA]] = !{!"A", !{{.*}}}
!0 = !{!"tbaa root"}
!1 = !{!3, !3, i64 0}
!2 = !{!4, !4, i64 0}
!3 = !{!"A", !0}
!4 = !{!"B", !0}
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