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
7 ; RUN: llvm-lto2 run %t.o -save-temps -pass-remarks=. \
8 ; RUN: -whole-program-visibility \
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
24 ; REMARK: single-impl: devirtualized a call to _ZN1A1nEi
26 ; Next check that we emit an error when trying to LTO link this module
27 ; containing an llvm.type.checked.load (with a split LTO Unit) with one
28 ; that does not have a split LTO Unit. Use -thinlto-distributed-indexes
29 ; to ensure it is being caught in the thin link.
30 ; RUN: opt -thinlto-bc -o %t2.o %S/Inputs/empty.ll
31 ; RUN: not llvm-lto2 run %t.o %t2.o -thinlto-distributed-indexes \
32 ; RUN: -whole-program-visibility \
34 ; RUN: -r=%t.o,test,px \
35 ; RUN: -r=%t.o,_ZN1A1nEi,p \
36 ; RUN: -r=%t.o,_ZN1B1fEi,p \
37 ; RUN: -r=%t.o,_ZN1C1fEi,p \
38 ; RUN: -r=%t.o,empty,p \
39 ; RUN: -r=%t.o,_ZTV1B, \
40 ; RUN: -r=%t.o,_ZTV1C, \
41 ; RUN: -r=%t.o,_ZN1A1nEi, \
42 ; RUN: -r=%t.o,_ZN1B1fEi, \
43 ; RUN: -r=%t.o,_ZN1C1fEi, \
44 ; RUN: -r=%t.o,_ZTV1B,px \
45 ; RUN: -r=%t.o,_ZTV1C,px 2>&1 | FileCheck %s --check-prefix=ERROR
46 ; ERROR: failed: inconsistent LTO Unit splitting (recompile with -fsplit-lto-unit)
48 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
49 target triple = "x86_64-grtev4-linux-gnu"
51 %struct.A = type { ptr }
52 %struct.B = type { %struct.A }
53 %struct.C = type { %struct.A }
55 @_ZTV1B = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1B1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1
56 @_ZTV1C = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1C1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !2
58 ; Put declaration first to test handling of remarks when the first
59 ; function has no basic blocks.
62 ; CHECK-IR-LABEL: define i32 @test
63 define i32 @test(ptr %obj, i32 %a) {
65 %vtable5 = load ptr, ptr %obj
67 %0 = tail call { ptr, i1 } @llvm.type.checked.load(ptr %vtable5, i32 8, metadata !"_ZTS1A")
68 %1 = extractvalue { ptr, i1 } %0, 1
69 br i1 %1, label %cont, label %trap
72 tail call void @llvm.trap()
76 %2 = extractvalue { ptr, i1 } %0, 0
78 ; Check that the call was devirtualized.
79 ; CHECK-IR: %call = tail call i32 @_ZN1A1nEi
80 %call = tail call i32 %2(ptr nonnull %obj, i32 %a)
81 %vtable16 = load ptr, ptr %obj
82 %3 = tail call { ptr, i1 } @llvm.type.checked.load(ptr %vtable16, i32 0, metadata !"_ZTS1A")
83 %4 = extractvalue { ptr, i1 } %3, 1
84 br i1 %4, label %cont2, label %trap
87 %5 = extractvalue { ptr, i1 } %3, 0
89 ; Check that traps are conditional. Invalid TYPE_ID can cause
90 ; unconditional traps.
91 ; CHECK-IR: br i1 {{.*}}, label %trap, label %cont2
93 ; We still have to call it as virtual.
94 ; CHECK-IR: %call3 = tail call i32 %7
95 %call3 = tail call i32 %5(ptr nonnull %obj, i32 %call)
98 ; CHECK-IR-LABEL: ret i32
101 declare { ptr, i1 } @llvm.type.checked.load(ptr, i32, metadata)
102 declare void @llvm.trap()
104 declare i32 @_ZN1B1fEi(ptr %this, i32 %a)
105 declare i32 @_ZN1A1nEi(ptr %this, i32 %a)
106 declare i32 @_ZN1C1fEi(ptr %this, i32 %a)
108 !0 = !{i64 16, !"_ZTS1A"}
109 !1 = !{i64 16, !"_ZTS1B"}
110 !2 = !{i64 16, !"_ZTS1C"}