File: preserve-load-metadata-3.ll

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llvm-toolchain-11 1%3A11.0.1-2
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; RUN: opt < %s -simplifycfg -S | FileCheck %s

declare void @bar(i32*)
declare void @baz(i32*)

; CHECK-LABEL: @test_load_combine_metadata(
; Check that dereferenceable_or_null metadata is combined
; CHECK: load i32*, i32** %p
; CHECK-SAME: !dereferenceable_or_null ![[DEREF:[0-9]+]]
; CHECK: t:
; CHECK: f:
define void @test_load_combine_metadata(i1 %c, i32** %p) {
  br i1 %c, label %t, label %f

t:
  %v1 = load i32*, i32** %p, !dereferenceable_or_null !0
  call void @bar(i32* %v1)
  br label %cont

f:
  %v2 = load i32*, i32** %p, !dereferenceable_or_null !1
  call void @baz(i32* %v2)
  br label %cont

cont:
  ret void
}

; CHECK: ![[DEREF]] = !{i64 8}

!0 = !{i64 8}
!1 = !{i64 16}