1; REQUIRES: x86-registered-target 2 3; Backend test for distribute ThinLTO with CFI. 4; It additionally enables -fwhole-program-vtables to get more information in 5; TYPE_IDs of GLOBALVAL_SUMMARY_BLOCK. 6 7; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s 8 9; RUN: llvm-lto2 run -thinlto-distributed-indexes -disable-thinlto-funcattrs=0 %t.o \ 10; RUN: -whole-program-visibility \ 11; RUN: -o %t2.index \ 12; RUN: -r=%t.o,test,px \ 13; RUN: -r=%t.o,_ZN1A1nEi,p \ 14; RUN: -r=%t.o,_ZN1B1fEi,p \ 15; RUN: -r=%t.o,_ZN1C1fEi,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 23 24; Ensure that typeids are in the index. 25; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s 26; CHECK-LABEL: <GLOBALVAL_SUMMARY_BLOCK 27; CHECK: <TYPE_ID op0=0 op1=6 op2=4 op3=7 op4=0 op5=0 op6=0 op7=0 op8=0 op9=2 op10=6 op11=0 op12=0 op13=8 op14=1 op15=6 op16=9 op17=0/> 28; CHECK-LABEL: </GLOBALVAL_SUMMARY_BLOCK 29; CHECK-LABEL: <STRTAB_BLOCK 30; CHECK: blob data = '_ZTS1A_ZN1A1nEi' 31; CHECK-LABEL: </STRTAB_BLOCK 32 33; RUN: llvm-dis %t.o.thinlto.bc -o - | FileCheck %s --check-prefix=CHECK-DIS 34; Round trip it through llvm-as 35; RUN: llvm-dis %t.o.thinlto.bc -o - | llvm-as -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK-DIS 36; CHECK-DIS: ^0 = module: (path: "{{.*}}thinlto-distributed-cfi-devirt.ll.tmp.o", hash: ({{.*}}, {{.*}}, {{.*}}, {{.*}}, {{.*}})) 37; CHECK-DIS: ^1 = gv: (guid: 8346051122425466633, summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 0, live: 1, dsoLocal: 0, canAutoHide: 0, importType: definition), insts: 18, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 0, returnDoesNotAlias: 0, noInline: 0, alwaysInline: 0, noUnwind: 0, mayThrow: 0, hasUnknownCall: 1, mustBeUnreachable: 0), typeIdInfo: (typeTests: (^2), typeCheckedLoadVCalls: (vFuncId: (^2, offset: 8), vFuncId: (^2, offset: 0)))))) 38; CHECK-DIS: ^2 = typeid: (name: "_ZTS1A", summary: (typeTestRes: (kind: allOnes, sizeM1BitWidth: 7), wpdResolutions: ((offset: 0, wpdRes: (kind: branchFunnel)), (offset: 8, wpdRes: (kind: singleImpl, singleImplName: "_ZN1A1nEi"))))) ; guid = 7004155349499253778 39 40; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \ 41; RUN: -fthinlto-index=%t.o.thinlto.bc -O2 -Rpass=wholeprogramdevirt \ 42; RUN: -emit-llvm -o - -x ir %t.o 2>&1 | FileCheck %s --check-prefixes=CHECK-IR --check-prefixes=REMARKS 43 44; Check that the devirtualization is suppressed via -wholeprogramdevirt-skip 45; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu -mllvm -wholeprogramdevirt-skip=_ZN1A1nEi \ 46; RUN: -fthinlto-index=%t.o.thinlto.bc -O2 -Rpass=wholeprogramdevirt \ 47; RUN: -emit-llvm -o - -x ir %t.o 2>&1 | FileCheck %s --check-prefixes=SKIP-IR --check-prefixes=SKIP-REMARKS 48 49; REMARKS: single-impl: devirtualized a call to _ZN1A1nEi 50; SKIP-REMARKS-NOT: single-impl 51 52; Check that backend does not fail generating native code. 53; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \ 54; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc -O2 \ 55; RUN: -o %t.native.o -x ir %t.o 56 57target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 58target triple = "x86_64-grtev4-linux-gnu" 59 60%struct.A = type { i32 (...)** } 61%struct.B = type { %struct.A } 62%struct.C = type { %struct.A } 63 64@_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 65@_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 66 67; CHECK-IR-LABEL: define i32 @test 68define i32 @test(%struct.A* %obj, i32 %a) { 69entry: 70 %0 = bitcast %struct.A* %obj to i8** 71 %vtable5 = load i8*, i8** %0 72 73 %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A") 74 %2 = extractvalue { i8*, i1 } %1, 1 75 br i1 %2, label %cont, label %trap 76 77trap: 78 tail call void @llvm.trap() 79 unreachable 80 81cont: 82 %3 = extractvalue { i8*, i1 } %1, 0 83 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* 84 85 ; Check that the call was devirtualized. 86 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi 87 ; SKIP-IR-NOT: %call = tail call i32 @_ZN1A1nEi 88 %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) 89 %vtable16 = load i8*, i8** %0 90 %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A") 91 %6 = extractvalue { i8*, i1 } %5, 1 92 br i1 %6, label %cont2, label %trap 93 94cont2: 95 %7 = extractvalue { i8*, i1 } %5, 0 96 %8 = bitcast i8* %7 to i32 (%struct.A*, i32)* 97 98 ; Check that traps are conditional. Invalid TYPE_ID can cause 99 ; unconditional traps. 100 ; CHECK-IR: br i1 {{.*}}, label %trap 101 102 ; We still have to call it as virtual. 103 ; CHECK-IR: %call3 = tail call i32 {{%[0-9]+}} 104 %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call) 105 ret i32 %call3 106} 107; CHECK-IR-LABEL: ret i32 108; CHECK-IR-LABEL: } 109 110declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) 111declare void @llvm.trap() 112 113declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) 114declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) 115declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a) 116 117!0 = !{i64 16, !"_ZTS1A"} 118!1 = !{i64 16, !"_ZTS1B"} 119!2 = !{i64 16, !"_ZTS1C"} 120