1 ; REQUIRES: x86-registered-target
3 ; Test that index-based devirtualization in the presence of same-named
4 ; local vtables in same named source files fails.
6 ; Generate unsplit module with summary for ThinLTO index-based WPD.
7 ; RUN: opt -thinlto-bc -o %t3.o %s
8 ; RUN: opt -thinlto-bc -o %t4.o %p/Inputs/devirt_local_same_guid.ll
10 ; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -use-new-pm -pass-remarks=. \
11 ; RUN: -wholeprogramdevirt-print-index-based \
13 ; RUN: -r=%t3.o,use_B,px \
14 ; RUN: -r=%t3.o,test,px \
15 ; RUN: -r=%t4.o,test2,px
16 ; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
17 ; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
19 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
20 target triple = "x86_64-grtev4-linux-gnu"
24 %struct.A = type { i32 (...)** }
25 %struct.B = type { %struct.A }
27 @_ZTV1B = internal constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1nEi to i8*)] }, !type !0, !type !1
29 define internal i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) #0 {
33 define internal i32 @_ZN1B1nEi(%struct.B* %this, i32 %a) #0 {
37 ; Ensures that vtable of B is live so that we will attempt devirt.
38 define dso_local i32 @use_B(%struct.B* %a) {
40 %0 = bitcast %struct.B* %a to i32 (...)***
41 store i32 (...)** bitcast (i8** getelementptr inbounds ({ [4 x i8*] }, { [4 x i8*] }* @_ZTV1B, i64 0, inrange i32 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 8
45 ; CHECK-IR1: define i32 @test(
46 define i32 @test(%struct.A* %obj, i32 %a) {
48 %0 = bitcast %struct.A* %obj to i8***
49 %vtable = load i8**, i8*** %0
50 %1 = bitcast i8** %vtable to i8*
51 %p = call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1A")
52 call void @llvm.assume(i1 %p)
53 %fptrptr = getelementptr i8*, i8** %vtable, i32 1
54 %2 = bitcast i8** %fptrptr to i32 (%struct.A*, i32)**
55 %fptr1 = load i32 (%struct.A*, i32)*, i32 (%struct.A*, i32)** %2, align 8
57 ; Check that the call was not devirtualized.
58 ; CHECK-IR1: %call = tail call i32 %fptr1
59 %call = tail call i32 %fptr1(%struct.A* nonnull %obj, i32 %a)
64 ; CHECK-IR2: define i32 @test2
65 ; Check that the call was not devirtualized.
66 ; CHECK-IR2: %call4 = tail call i32 %fptr
68 declare i1 @llvm.type.test(i8*, metadata)
69 declare void @llvm.assume(i1)
71 attributes #0 = { noinline optnone }
73 !0 = !{i64 16, !"_ZTS1A"}
74 !1 = !{i64 16, !"_ZTS1B"}