1 ; REQUIRES: x86-registered-target
3 ; Test CFI devirtualization through the thin link and backend.
5 ; RUN: opt -thinlto-bc -thinlto-split-lto-unit -o %t.o %s
8 ; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \
10 ; RUN: -r=%t.o,test,px \
11 ; RUN: -r=%t.o,_ZN1A1nEi,p \
12 ; RUN: -r=%t.o,_ZN1B1fEi,p \
13 ; RUN: -r=%t.o,_ZN1C1fEi,p \
14 ; RUN: -r=%t.o,empty,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 2>&1 | FileCheck %s --check-prefix=REMARK
22 ; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
25 ; RUN: llvm-lto2 run %t.o -save-temps -use-new-pm -pass-remarks=. \
27 ; RUN: -r=%t.o,test,px \
28 ; RUN: -r=%t.o,_ZN1A1nEi,p \
29 ; RUN: -r=%t.o,_ZN1B1fEi,p \
30 ; RUN: -r=%t.o,_ZN1C1fEi,p \
31 ; RUN: -r=%t.o,empty,p \
32 ; RUN: -r=%t.o,_ZTV1B, \
33 ; RUN: -r=%t.o,_ZTV1C, \
34 ; RUN: -r=%t.o,_ZN1A1nEi, \
35 ; RUN: -r=%t.o,_ZN1B1fEi, \
36 ; RUN: -r=%t.o,_ZN1C1fEi, \
37 ; RUN: -r=%t.o,_ZTV1B,px \
38 ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=REMARK
39 ; RUN: llvm-dis %t3.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
41 ; REMARK: single-impl: devirtualized a call to _ZN1A1nEi
43 ; Next check that we emit an error when trying to LTO link this module
44 ; containing an llvm.type.checked.load (with a split LTO Unit) with one
45 ; that does not have a split LTO Unit. Use -thinlto-distributed-indexes
46 ; to ensure it is being caught in the thin link.
47 ; RUN: opt -thinlto-bc -o %t2.o %S/Inputs/empty.ll
48 ; RUN: not llvm-lto2 run %t.o %t2.o -thinlto-distributed-indexes \
50 ; RUN: -r=%t.o,test,px \
51 ; RUN: -r=%t.o,_ZN1A1nEi,p \
52 ; RUN: -r=%t.o,_ZN1B1fEi,p \
53 ; RUN: -r=%t.o,_ZN1C1fEi,p \
54 ; RUN: -r=%t.o,empty,p \
55 ; RUN: -r=%t.o,_ZTV1B, \
56 ; RUN: -r=%t.o,_ZTV1C, \
57 ; RUN: -r=%t.o,_ZN1A1nEi, \
58 ; RUN: -r=%t.o,_ZN1B1fEi, \
59 ; RUN: -r=%t.o,_ZN1C1fEi, \
60 ; RUN: -r=%t.o,_ZTV1B,px \
61 ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=ERROR
62 ; ERROR: failed: inconsistent LTO Unit splitting (recompile with -fsplit-lto-unit)
64 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
65 target triple = "x86_64-grtev4-linux-gnu"
67 %struct.A = type { i32 (...)** }
68 %struct.B = type { %struct.A }
69 %struct.C = type { %struct.A }
71 @_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
72 @_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
74 ; Put declaration first to test handling of remarks when the first
75 ; function has no basic blocks.
78 ; CHECK-IR-LABEL: define i32 @test
79 define i32 @test(%struct.A* %obj, i32 %a) {
81 %0 = bitcast %struct.A* %obj to i8**
82 %vtable5 = load i8*, i8** %0
84 %1 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable5, i32 8, metadata !"_ZTS1A")
85 %2 = extractvalue { i8*, i1 } %1, 1
86 br i1 %2, label %cont, label %trap
89 tail call void @llvm.trap()
93 %3 = extractvalue { i8*, i1 } %1, 0
94 %4 = bitcast i8* %3 to i32 (%struct.A*, i32)*
96 ; Check that the call was devirtualized.
97 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi
98 %call = tail call i32 %4(%struct.A* nonnull %obj, i32 %a)
99 %vtable16 = load i8*, i8** %0
100 %5 = tail call { i8*, i1 } @llvm.type.checked.load(i8* %vtable16, i32 0, metadata !"_ZTS1A")
101 %6 = extractvalue { i8*, i1 } %5, 1
102 br i1 %6, label %cont2, label %trap
105 %7 = extractvalue { i8*, i1 } %5, 0
106 %8 = bitcast i8* %7 to i32 (%struct.A*, i32)*
108 ; Check that traps are conditional. Invalid TYPE_ID can cause
109 ; unconditional traps.
110 ; CHECK-IR: br i1 {{.*}}, label %trap
112 ; We still have to call it as virtual.
113 ; CHECK-IR: %call3 = tail call i32 %8
114 %call3 = tail call i32 %8(%struct.A* nonnull %obj, i32 %call)
117 ; CHECK-IR-LABEL: ret i32
120 declare { i8*, i1 } @llvm.type.checked.load(i8*, i32, metadata)
121 declare void @llvm.trap()
123 declare i32 @_ZN1B1fEi(%struct.B* %this, i32 %a)
124 declare i32 @_ZN1A1nEi(%struct.A* %this, i32 %a)
125 declare i32 @_ZN1C1fEi(%struct.C* %this, i32 %a)
127 !0 = !{i64 16, !"_ZTS1A"}
128 !1 = !{i64 16, !"_ZTS1B"}
129 !2 = !{i64 16, !"_ZTS1C"}