1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility %s | FileCheck %s
target datalayout = "e-p:64:64"
target triple = "x86_64-unknown-linux-gnu"
%vtTy = type { [2 x ptr], [2 x ptr] }
@vt = constant %vtTy { [2 x ptr] [ptr null, ptr @vf1], [2 x ptr] [ptr null, ptr @vf2] }, !type !0, !type !1
define void @vf1(ptr %this) {
ret void
}
define void @vf2(ptr %this) {
ret void
}
; CHECK: define void @call1
define void @call1(ptr %obj) {
%vtable = load ptr, ptr %obj
%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid1")
call void @llvm.assume(i1 %p)
%fptr = load ptr, ptr %vtable
; CHECK: call void @vf1(
call void %fptr(ptr %obj)
ret void
}
; CHECK: define void @call2
define void @call2(ptr %obj) {
%vtable = load ptr, ptr %obj
%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2")
call void @llvm.assume(i1 %p)
%fptr = load ptr, ptr %vtable
; CHECK: call void @vf2(
call void %fptr(ptr %obj)
ret void
}
declare i1 @llvm.type.test(ptr, metadata)
declare void @llvm.assume(i1)
!0 = !{i32 8, !"typeid1"}
!1 = !{i32 24, !"typeid2"}
|
