1target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 2target triple = "x86_64-grtev4-linux-gnu" 3 4%struct.A = type { i32 (...)** } 5%struct.B = type { i32 (...)** } 6 7@_ZTV1B = linkonce_odr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1nEi to i8*)] }, !type !0 8 9$test = comdat any 10$testb = comdat any 11 12define linkonce_odr i32 @test(%struct.A* %obj, i32 %a) comdat { 13entry: 14 %0 = bitcast %struct.A* %obj to i8** 15 %vtable5 = load i8*, i8** %0 16 17 %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A") 18 %2 = extractvalue { i8*, i1 } %1, 1 19 br i1 %2, label %cont, label %trap 20 21trap: 22 tail call void @llvm.trap() 23 unreachable 24 25cont: 26 %3 = extractvalue { i8*, i1 } %1, 0 27 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* 28 29 %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) 30 31 ret i32 %call 32} 33 34define linkonce_odr i32 @testb(%struct.A* %obj, i32 %a) comdat { 35entry: 36 %0 = bitcast %struct.A* %obj to i8** 37 %vtable5 = load i8*, i8** %0 38 39 %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 0, metadata !"_ZTS1A") 40 %2 = extractvalue { i8*, i1 } %1, 1 41 br i1 %2, label %cont, label %trap 42 43trap: 44 tail call void @llvm.trap() 45 unreachable 46 47cont: 48 %3 = extractvalue { i8*, i1 } %1, 0 49 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* 50 51 %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) 52 53 ret i32 %call 54} 55 56declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) 57declare void @llvm.trap() 58 59define internal i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) { 60entry: 61 ret i32 0 62} 63define internal i32 @_ZN1B1nEi(%struct.B* %this, i32 %a) { 64entry: 65 ret i32 0 66} 67 68!0 = !{i64 16, !"_ZTS1B"} 69