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 -o %t.o %s
8
9; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
10; RUN:   -o %t2.index \
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,_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
22
23; Ensure that typeids are in the index.
24; RUN: llvm-bcanalyzer -dump %t.o.thinlto.bc | FileCheck %s
25; CHECK-LABEL: <GLOBALVAL_SUMMARY_BLOCK
26; CHECK: <TYPE_ID op0=0 op1=6 op2=4 op3=7 op4=0 op5=0 op6=0 op7=0 op8=0 op9=0 op10=6 op11=0 op12=0 op13=8 op14=1 op15=6 op16=9 op17=0/>
27; CHECK-LABEL: </GLOBALVAL_SUMMARY_BLOCK
28; CHECK-LABEL: <STRTAB_BLOCK
29; CHECK: blob data = '_ZTS1A_ZN1A1nEi'
30; CHECK-LABEL: </STRTAB_BLOCK
31
32; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
33; RUN:   -emit-obj -fthinlto-index=%t.o.thinlto.bc \
34; RUN:   -emit-llvm -o - -x ir %t.o | FileCheck %s --check-prefixes=CHECK-IR
35
36; Check that backend does not fail generating native code.
37; RUN: %clang_cc1 -triple x86_64-grtev4-linux-gnu \
38; RUN:   -emit-obj -fthinlto-index=%t.o.thinlto.bc \
39; RUN:   -o %t.native.o -x ir %t.o
40
41target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
42target triple = "x86_64-grtev4-linux-gnu"
43
44%struct.A = type { i32 (...)** }
45%struct.B = type { %struct.A }
46%struct.C = type { %struct.A }
47
48@_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
49@_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
50
51; CHECK-IR-LABEL: define i32 @test
52define i32 @test(%struct.A* %obj, i32 %a) {
53entry:
54  %0 = bitcast %struct.A* %obj to i8**
55  %vtable5 = load i8*, i8** %0
56
57  ; Check that the call was devirtualized.
58  ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi
59  %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A")
60  %2 = extractvalue { i8*, i1 } %1, 1
61  br i1 %2, label %cont, label %trap
62
63trap:
64  tail call void @llvm.trap()
65  unreachable
66
67cont:
68  %3 = extractvalue { i8*, i1 } %1, 0
69  %4 = bitcast i8* %3 to i32 (%struct.A*, i32)*
70  %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a)
71  %vtable16 = load i8*, i8** %0
72  %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A")
73  %6 = extractvalue { i8*, i1 } %5, 1
74  br i1 %6, label %cont2, label %trap
75
76cont2:
77  %7 = extractvalue { i8*, i1 } %5, 0
78  %8 = bitcast i8* %7 to i32 (%struct.A*, i32)*
79
80  ; Check that traps are conditional. Invalid TYPE_ID can cause
81  ; unconditional traps.
82  ; CHECK-IR: br i1 {{.*}}, label %trap
83
84  ; We still have to call it as virtual.
85  ; CHECK-IR: %call3 = tail call i32 %8
86  %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call)
87  ret i32 %call3
88}
89; CHECK-IR-LABEL: ret i32
90; CHECK-IR-LABEL: }
91
92declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata)
93declare void @llvm.trap()
94
95declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
96declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a)
97declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a)
98
99!0 = !{i64 16, !"_ZTS1A"}
100!1 = !{i64 16, !"_ZTS1B"}
101!2 = !{i64 16, !"_ZTS1C"}
102