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 | ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39436. |
10 | ; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \ |
11 | ; RUN: -verify-machineinstrs=0 \ |
12 | ; RUN: -o %t2.index \ |
13 | ; RUN: -r=%t.o,test,px \ |
14 | ; RUN: -r=%t.o,_ZN1A1nEi,p \ |
15 | ; RUN: -r=%t.o,_ZN1B1fEi,p \ |
16 | ; RUN: -r=%t.o,_ZN1C1fEi,p \ |
17 | ; RUN: -r=%t.o,_ZTV1B, \ |
18 | ; RUN: -r=%t.o,_ZTV1C, \ |
19 | ; RUN: -r=%t.o,_ZN1A1nEi, \ |
20 | ; RUN: -r=%t.o,_ZN1B1fEi, \ |
21 | ; RUN: -r=%t.o,_ZN1C1fEi, \ |
22 | ; RUN: -r=%t.o,_ZTV1B,px \ |
23 | ; RUN: -r=%t.o,_ZTV1C,px |
24 | |
25 | ; Ensure that typeids are in the index. |
26 | ; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s |
27 | ; CHECK-LABEL: <GLOBALVAL_SUMMARY_BLOCK |
28 | ; 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/> |
29 | ; CHECK-LABEL: </GLOBALVAL_SUMMARY_BLOCK |
30 | ; CHECK-LABEL: <STRTAB_BLOCK |
31 | ; CHECK: blob data = '_ZTS1A_ZN1A1nEi' |
32 | ; CHECK-LABEL: </STRTAB_BLOCK |
33 | |
34 | ; RUN: llvm-dis %t.o.thinlto.bc -o - | FileCheck %s --check-prefix=CHECK-DIS |
35 | ; Round trip it through llvm-as |
36 | ; RUN: llvm-dis %t.o.thinlto.bc -o - | llvm-as -o - | llvm-dis -o - | FileCheck %s --check-prefix=CHECK-DIS |
37 | ; CHECK-DIS: ^0 = module: (path: "{{.*}}thinlto-distributed-cfi-devirt.ll.tmp.o", hash: ({{.*}}, {{.*}}, {{.*}}, {{.*}}, {{.*}})) |
38 | ; CHECK-DIS: ^1 = gv: (guid: 8346051122425466633, summaries: (function: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 1, dsoLocal: 0), insts: 18, typeIdInfo: (typeTests: (^2), typeCheckedLoadVCalls: (vFuncId: (^2, offset: 8), vFuncId: (^2, offset: 0)))))) |
39 | ; 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 |
40 | |
41 | ; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \ |
42 | ; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \ |
43 | ; RUN: -emit-llvm -o - -x ir %t.o | FileCheck %s --check-prefixes=CHECK-IR |
44 | |
45 | ; Check that backend does not fail generating native code. |
46 | ; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \ |
47 | ; RUN: -emit-obj -fthinlto-index=%t.o.thinlto.bc \ |
48 | ; RUN: -o %t.native.o -x ir %t.o |
49 | |
50 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
51 | target triple = "x86_64-grtev4-linux-gnu" |
52 | |
53 | %struct.A = type { i32 (...)** } |
54 | %struct.B = type { %struct.A } |
55 | %struct.C = type { %struct.A } |
56 | |
57 | @_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 |
58 | @_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 |
59 | |
60 | ; CHECK-IR-LABEL: define i32 @test |
61 | define i32 @test(%struct.A* %obj, i32 %a) { |
62 | entry: |
63 | %0 = bitcast %struct.A* %obj to i8** |
64 | %vtable5 = load i8*, i8** %0 |
65 | |
66 | %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A") |
67 | %2 = extractvalue { i8*, i1 } %1, 1 |
68 | br i1 %2, label %cont, label %trap |
69 | |
70 | trap: |
71 | tail call void @llvm.trap() |
72 | unreachable |
73 | |
74 | cont: |
75 | %3 = extractvalue { i8*, i1 } %1, 0 |
76 | %4 = bitcast i8* %3 to i32 (%struct.A*, i32)* |
77 | |
78 | ; Check that the call was devirtualized. |
79 | ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi |
80 | %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a) |
81 | %vtable16 = load i8*, i8** %0 |
82 | %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A") |
83 | %6 = extractvalue { i8*, i1 } %5, 1 |
84 | br i1 %6, label %cont2, label %trap |
85 | |
86 | cont2: |
87 | %7 = extractvalue { i8*, i1 } %5, 0 |
88 | %8 = bitcast i8* %7 to i32 (%struct.A*, i32)* |
89 | |
90 | ; Check that traps are conditional. Invalid TYPE_ID can cause |
91 | ; unconditional traps. |
92 | ; CHECK-IR: br i1 {{.*}}, label %trap |
93 | |
94 | ; We still have to call it as virtual. |
95 | ; CHECK-IR: %call3 = tail call i32 %8 |
96 | %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call) |
97 | ret i32 %call3 |
98 | } |
99 | ; CHECK-IR-LABEL: ret i32 |
100 | ; CHECK-IR-LABEL: } |
101 | |
102 | declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata) |
103 | declare void @llvm.trap() |
104 | |
105 | declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) |
106 | declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) |
107 | declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a) |
108 | |
109 | !0 = !{i64 16, !"_ZTS1A"} |
110 | !1 = !{i64 16, !"_ZTS1B"} |
111 | !2 = !{i64 16, !"_ZTS1C"} |
112 | |