1; Test to ensure type tests that are only used in assumes are ignored by
2; LowerTypeTests (in the normal pass sequence they will be stripped out
3; by a subsequent special LTT invocation).
4
5; RUN: opt -S -passes=lowertypetests < %s | FileCheck %s
6
7; ModuleID = 'pr48245.o'
8source_filename = "pr48245.cpp"
9target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
10target triple = "x86_64-unknown-linux-gnu"
11
12%struct.Foo = type { i32 (...)** }
13
14; Check that the vtable was not turned into an alias to a rewritten private
15; global.
16; CHECK: @_ZTV3Foo = dso_local unnamed_addr constant
17@_ZTV3Foo = dso_local unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI3Foo to i8*), i8* bitcast (i32 (%struct.Foo*)* @_ZN3Foo2f1Ev to i8*), i8* bitcast (i32 (%struct.Foo*)* @_ZN3Foo2f2Ev to i8*)] }, align 8, !type !0, !type !1, !type !2
18
19@_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global i8*
20@_ZTS3Foo = dso_local constant [5 x i8] c"3Foo\00", align 1
21@_ZTI3Foo = dso_local constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8*, i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @_ZTS3Foo, i32 0, i32 0) }, align 8
22@b = dso_local local_unnamed_addr global %struct.Foo* null, align 8
23
24define dso_local i32 @main() local_unnamed_addr {
25entry:
26  %0 = load %struct.Foo*, %struct.Foo** @b, align 8
27  %1 = bitcast %struct.Foo* %0 to i32 (%struct.Foo*)***
28  %vtable.i = load i32 (%struct.Foo*)**, i32 (%struct.Foo*)*** %1, align 8
29  %2 = bitcast i32 (%struct.Foo*)** %vtable.i to i8*
30
31  ; Check that the type test was not lowered.
32  ; CHECK: tail call i1 @llvm.type.test
33  %3 = tail call i1 @llvm.type.test(i8* %2, metadata !"_ZTS3Foo")
34
35  tail call void @llvm.assume(i1 %3)
36  %4 = load i32 (%struct.Foo*)*, i32 (%struct.Foo*)** %vtable.i, align 8
37  %call.i = tail call i32 %4(%struct.Foo* nonnull dereferenceable(8) %0)
38  ret i32 %call.i
39}
40
41declare i1 @llvm.type.test(i8*, metadata)
42declare void @llvm.assume(i1 noundef)
43declare dso_local i32 @_ZN3Foo2f1Ev(%struct.Foo* nocapture nonnull readnone dereferenceable(8) %this) unnamed_addr
44declare dso_local i32 @_ZN3Foo2f2Ev(%struct.Foo* nocapture nonnull readnone dereferenceable(8) %this) unnamed_addr
45
46!0 = !{i64 16, !"_ZTS3Foo"}
47!1 = !{i64 16, !"_ZTSM3FooFivE.virtual"}
48!2 = !{i64 24, !"_ZTSM3FooFivE.virtual"}
49