1; REQUIRES: x86-registered-target 2 3; Test CFI devirtualization through the thin link and backend. 4 5; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s 6 7; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \ 8; RUN: -whole-program-visibility \ 9; RUN: -o %t3 \ 10; RUN: -r=%t.o,test,px \ 11; RUN: -r=%t.o,_ZN1A1nEi,p \ 12; RUN: -r=%t.o,_ZN1B1fEi,p \ 13; RUN: -r=%t.o,_ZN1C1fEi,p \ 14; RUN: -r=%t.o,empty,p \ 15; RUN: -r=%t.o,_ZTV1B, \ 16; RUN: -r=%t.o,_ZTV1C, \ 17; RUN: -r=%t.o,_ZN1A1nEi, \ 18; RUN: -r=%t.o,_ZN1B1fEi, \ 19; RUN: -r=%t.o,_ZN1C1fEi, \ 20; RUN: -r=%t.o,_ZTV1B,px \ 21; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK 22; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 23 24; REMARK: single-impl: devirtualized a call to _ZN1A1nEi 25 26; Next check that we emit an error when trying to LTO link this module 27; containing an llvm.type.checked.load (with a split LTO Unit) with one 28; that does not have a split LTO Unit. Use -thinlto-distributed-indexes 29; to ensure it is being caught in the thin link. 30; RUN: opt -thinlto-bc -o %t2.o %S/Inputs/empty.ll 31; RUN: not llvm-lto2 run %t.o %t2.o -thinlto-distributed-indexes \ 32; RUN: -whole-program-visibility \ 33; RUN: -o %t3 \ 34; RUN: -r=%t.o,test,px \ 35; RUN: -r=%t.o,_ZN1A1nEi,p \ 36; RUN: -r=%t.o,_ZN1B1fEi,p \ 37; RUN: -r=%t.o,_ZN1C1fEi,p \ 38; RUN: -r=%t.o,empty,p \ 39; RUN: -r=%t.o,_ZTV1B, \ 40; RUN: -r=%t.o,_ZTV1C, \ 41; RUN: -r=%t.o,_ZN1A1nEi, \ 42; RUN: -r=%t.o,_ZN1B1fEi, \ 43; RUN: -r=%t.o,_ZN1C1fEi, \ 44; RUN: -r=%t.o,_ZTV1B,px \ 45; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=ERROR 46; ERROR: failed: inconsistent LTO Unit splitting (recompile with -fsplit-lto-unit) 47 48target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 49target triple = "x86_64-grtev4-linux-gnu" 50 51%struct.A = type { ptr } 52%struct.B = type { %struct.A } 53%struct.C = type { %struct.A } 54 55@_ZTV1B = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1B1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1 56@_ZTV1C = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1C1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !2 57 58; Put declaration first to test handling of remarks when the first 59; function has no basic blocks. 60declare void @empty() 61 62; CHECK-IR-LABEL: define i32 @test 63define i32 @test(ptr %obj, i32 %a) { 64entry: 65 %vtable5 = load ptr, ptr %obj 66 67 %0 = tail call { ptr, i1 } @llvm.type.checked.load(ptr %vtable5, i32 8, metadata !"_ZTS1A") 68 %1 = extractvalue { ptr, i1 } %0, 1 69 br i1 %1, label %cont, label %trap 70 71trap: 72 tail call void @llvm.trap() 73 unreachable 74 75cont: 76 %2 = extractvalue { ptr, i1 } %0, 0 77 78 ; Check that the call was devirtualized. 79 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi 80 %call = tail call i32 %2(ptr nonnull %obj, i32 %a) 81 %vtable16 = load ptr, ptr %obj 82 %3 = tail call { ptr, i1 } @llvm.type.checked.load(ptr %vtable16, i32 0, metadata !"_ZTS1A") 83 %4 = extractvalue { ptr, i1 } %3, 1 84 br i1 %4, label %cont2, label %trap 85 86cont2: 87 %5 = extractvalue { ptr, i1 } %3, 0 88 89 ; Check that traps are conditional. Invalid TYPE_ID can cause 90 ; unconditional traps. 91 ; CHECK-IR: br i1 {{.*}}, label %trap, label %cont2 92 93 ; We still have to call it as virtual. 94 ; CHECK-IR: %call3 = tail call i32 %7 95 %call3 = tail call i32 %5(ptr nonnull %obj, i32 %call) 96 ret i32 %call3 97} 98; CHECK-IR-LABEL: ret i32 99; CHECK-IR-LABEL: } 100 101declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata) 102declare void @llvm.trap() 103 104declare i32 @_ZN1B1fEi(ptr %this, i32 %a) 105declare i32 @_ZN1A1nEi(ptr %this, i32 %a) 106declare i32 @_ZN1C1fEi(ptr %this, i32 %a) 107 108!0 = !{i64 16, !"_ZTS1A"} 109!1 = !{i64 16, !"_ZTS1B"} 110!2 = !{i64 16, !"_ZTS1C"} 111