1 ; REQUIRES: x86-registered-target
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.
7 ; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s
9 ; RUN: llvm-lto2 run -thinlto-distributed-indexes -disable-thinlto-funcattrs=0 %t.o \
10 ; RUN: -whole-program-visibility \
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
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
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
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
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
49 ; REMARKS: single-impl: devirtualized a call to _ZN1A1nEi
50 ; SKIP-REMARKS-NOT: single-impl
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
57 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
58 target triple = "x86_64-grtev4-linux-gnu"
60 %struct.A = type { i32 (...)** }
61 %struct.B = type { %struct.A }
62 %struct.C = type { %struct.A }
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
67 ; CHECK-IR-LABEL: define i32 @test
68 define i32 @test(%struct.A* %obj, i32 %a) {
70 %0 = bitcast %struct.A* %obj to i8**
71 %vtable5 = load i8*, i8** %0
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
78 tail call void @llvm.trap()
82 %3 = extractvalue { i8*, i1 } %1, 0
83 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)*
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
95 %7 = extractvalue { i8*, i1 } %5, 0
96 %8 = bitcast i8* %7 to i32 (%struct.A*, i32)*
98 ; Check that traps are conditional. Invalid TYPE_ID can cause
99 ; unconditional traps.
100 ; CHECK-IR: br i1 {{.*}}, label %trap
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)
107 ; CHECK-IR-LABEL: ret i32
110 declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata)
111 declare void @llvm.trap()
113 declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
114 declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a)
115 declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a)
117 !0 = !{i64 16, !"_ZTS1A"}
118 !1 = !{i64 16, !"_ZTS1B"}
119 !2 = !{i64 16, !"_ZTS1C"}