llvm-project/llvm/test/Transforms/InstCombine/tbaa-store-to-load.ll

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; RUN: opt -S -instcombine < %s 2>&1 | FileCheck %s
define i64 @f(i64* %p1, i64* %p2) {
top:
; check that the tbaa is preserved
; CHECK-LABEL: @f(
; CHECK: %v1 = load i64, i64* %p1, align 8, !tbaa !0
; CHECK: store i64 %v1, i64* %p2, align 8
; CHECK: ret i64 %v1
%v1 = load i64, i64* %p1, align 8, !tbaa !0
store i64 %v1, i64* %p2, align 8
%v2 = load i64, i64* %p2, align 8
ret i64 %v2
}
!0 = !{!1, !1, i64 0}
!1 = !{!"load_tbaa"}