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; Legacy PM 8; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \ 9; RUN: -whole-program-visibility \ 10; RUN: -o %t3 \ 11; RUN: -r=%t.o,test,px \ 12; RUN: -r=%t.o,_ZN1A1nEi,p \ 13; RUN: -r=%t.o,_ZN1B1fEi,p \ 14; RUN: -r=%t.o,_ZN1C1fEi,p \ 15; RUN: -r=%t.o,empty,p \ 16; RUN: -r=%t.o,_ZTV1B, \ 17; RUN: -r=%t.o,_ZTV1C, \ 18; RUN: -r=%t.o,_ZN1A1nEi, \ 19; RUN: -r=%t.o,_ZN1B1fEi, \ 20; RUN: -r=%t.o,_ZN1C1fEi, \ 21; RUN: -r=%t.o,_ZTV1B,px \ 22; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK 23; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 24 25; New PM 26; RUN: llvm-lto2 run %t.o -save-temps -use-new-pm -pass-remarks=. \ 27; RUN: -whole-program-visibility \ 28; RUN: -o %t3 \ 29; RUN: -r=%t.o,test,px \ 30; RUN: -r=%t.o,_ZN1A1nEi,p \ 31; RUN: -r=%t.o,_ZN1B1fEi,p \ 32; RUN: -r=%t.o,_ZN1C1fEi,p \ 33; RUN: -r=%t.o,empty,p \ 34; RUN: -r=%t.o,_ZTV1B, \ 35; RUN: -r=%t.o,_ZTV1C, \ 36; RUN: -r=%t.o,_ZN1A1nEi, \ 37; RUN: -r=%t.o,_ZN1B1fEi, \ 38; RUN: -r=%t.o,_ZN1C1fEi, \ 39; RUN: -r=%t.o,_ZTV1B,px \ 40; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK 41; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR 42 43; REMARK: single-impl: devirtualized a call to _ZN1A1nEi 44 45; Next check that we emit an error when trying to LTO link this module 46; containing an llvm.type.checked.load (with a split LTO Unit) with one 47; that does not have a split LTO Unit. Use -thinlto-distributed-indexes 48; to ensure it is being caught in the thin link. 49; RUN: opt -thinlto-bc -o %t2.o %S/Inputs/empty.ll 50; RUN: not llvm-lto2 run %t.o %t2.o -thinlto-distributed-indexes \ 51; RUN: -whole-program-visibility \ 52; RUN: -o %t3 \ 53; RUN: -r=%t.o,test,px \ 54; RUN: -r=%t.o,_ZN1A1nEi,p \ 55; RUN: -r=%t.o,_ZN1B1fEi,p \ 56; RUN: -r=%t.o,_ZN1C1fEi,p \ 57; RUN: -r=%t.o,empty,p \ 58; RUN: -r=%t.o,_ZTV1B, \ 59; RUN: -r=%t.o,_ZTV1C, \ 60; RUN: -r=%t.o,_ZN1A1nEi, \ 61; RUN: -r=%t.o,_ZN1B1fEi, \ 62; RUN: -r=%t.o,_ZN1C1fEi, \ 63; RUN: -r=%t.o,_ZTV1B,px \ 64; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=ERROR 65; ERROR: failed: inconsistent LTO Unit splitting (recompile with -fsplit-lto-unit) 66 67target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 68target triple = "x86_64-grtev4-linux-gnu" 69 70%struct.A = type { i32 (...)** } 71%struct.B = type { %struct.A } 72%struct.C = type { %struct.A } 73 74@_ZTV1B = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1 75@_ZTV1C = constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.C*, i32)* @_ZN1C1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !2 76 77; Put declaration first to test handling of remarks when the first 78; function has no basic blocks. 79declare void @empty() 80 81; CHECK-IR-LABEL: define i32 @test 82define i32 @test(%struct.A* %obj, i32 %a) { 83entry: 84 %0 = bitcast %struct.A* %obj to i8** 85 %vtable5 = load i8*, i8** %0 86 87 %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A") 88 %2 = extractvalue { i8*, i1 } %1, 1 89 br i1 %2, label %cont, label %trap 90 91trap: 92 tail call void @llvm.trap() 93 unreachable 94 95cont: 96 %3 = extractvalue { i8*, i1 } %1, 0 97 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* 98 99 ; Check that the call was devirtualized. 100 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi 101 %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) 102 %vtable16 = load i8*, i8** %0 103 %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A") 104 %6 = extractvalue { i8*, i1 } %5, 1 105 br i1 %6, label %cont2, label %trap 106 107cont2: 108 %7 = extractvalue { i8*, i1 } %5, 0 109 %8 = bitcast i8* %7 to i32 (%struct.A*, i32)* 110 111 ; Check that traps are conditional. Invalid TYPE_ID can cause 112 ; unconditional traps. 113 ; CHECK-IR: br i1 {{.*}}, label %trap, label %cont2 114 115 ; We still have to call it as virtual. 116 ; CHECK-IR: %call3 = tail call i32 %7 117 %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call) 118 ret i32 %call3 119} 120; CHECK-IR-LABEL: ret i32 121; CHECK-IR-LABEL: } 122 123declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) 124declare void @llvm.trap() 125 126declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) 127declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) 128declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a) 129 130!0 = !{i64 16, !"_ZTS1A"} 131!1 = !{i64 16, !"_ZTS1B"} 132!2 = !{i64 16, !"_ZTS1C"} 133