1; RUN: opt -passes=instcombine -S < %s | FileCheck %s 2 3declare void @bar() 4declare void @baz() 5 6; Check that dereferenceable_or_null metadata is combined 7; CHECK-LABEL: cont: 8; CHECK: load ptr, ptr 9; CHECK-SAME: !dereferenceable_or_null ![[DEREF:[0-9]+]] 10define ptr @test_phi_combine_load_metadata(i1 %c, ptr dereferenceable(8) %p1, ptr dereferenceable(8) %p2) { 11 br i1 %c, label %t, label %f 12t: 13 call void @bar() 14 %v1 = load ptr, ptr %p1, align 8, !dereferenceable_or_null !0 15 br label %cont 16 17f: 18 call void @baz() 19 %v2 = load ptr, ptr %p2, align 8, !dereferenceable_or_null !1 20 br label %cont 21 22cont: 23 %res = phi ptr [ %v1, %t ], [ %v2, %f ] 24 ret ptr %res 25} 26 27; CHECK: ![[DEREF]] = !{i64 8} 28 29!0 = !{i64 8} 30!1 = !{i64 16} 31