1 ; RUN: opt -instcombine -S < %s | FileCheck %s 2 3 declare void @bar() 4 declare void @baz() 5 6 ; Check that dereferenceable_or_null metadata is combined 7 ; CHECK-LABEL: cont: 8 ; CHECK: load i32*, i32** 9 ; CHECK-SAME: !dereferenceable_or_null ![[DEREF:[0-9]+]] 10 define i32* @test_phi_combine_load_metadata(i1 %c, i32** dereferenceable(8) %p1, i32** dereferenceable(8) %p2) { 11 br i1 %c, label %t, label %f 12 t: 13 call void @bar() 14 %v1 = load i32*, i32** %p1, align 8, !dereferenceable_or_null !0 15 br label %cont 16 17 f: 18 call void @baz() 19 %v2 = load i32*, i32** %p2, align 8, !dereferenceable_or_null !1 20 br label %cont 21 22 cont: 23 %res = phi i32* [ %v1, %t ], [ %v2, %f ] 24 ret i32* %res 25 } 26 27 ; CHECK: ![[DEREF]] = !{i64 8} 28 29 !0 = !{i64 8} 30 !1 = !{i64 16} 31
