1 ; RUN: llc < %s -mtriple=x86_64-pc-windows-msvc | FileCheck %s
2 ; Control Flow Guard is currently only available on Windows
4 ; CHECK: .set @feat.00, 2048
6 ; CHECK: .section .gfids$y
7 ; CHECK: .symidx "?address_taken@@YAXXZ"
8 ; CHECK: .symidx "?virt_method@Derived@@UEBAHXZ"
10 ; ModuleID = 'cfguard.cpp'
11 source_filename = "cfguard.cpp"
12 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
13 target triple = "x86_64-pc-windows-msvc"
15 %struct.Derived = type { %struct.Base }
16 %struct.Base = type { i32 (...)** }
17 %rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 }
18 %rtti.TypeDescriptor13 = type { i8**, i8*, [14 x i8] }
19 %rtti.ClassHierarchyDescriptor = type { i32, i32, i32, i32 }
20 %rtti.BaseClassDescriptor = type { i32, i32, i32, i32, i32, i32, i32 }
21 %rtti.TypeDescriptor10 = type { i8**, i8*, [11 x i8] }
23 $"\01??0Derived@@QEAA@XZ" = comdat any
25 $"\01??0Base@@QEAA@XZ" = comdat any
27 $"\01?virt_method@Derived@@UEBAHXZ" = comdat any
29 $"\01??_7Derived@@6B@" = comdat largest
31 $"\01??_R4Derived@@6B@" = comdat any
33 $"\01??_R0?AUDerived@@@8" = comdat any
35 $"\01??_R3Derived@@8" = comdat any
37 $"\01??_R2Derived@@8" = comdat any
39 $"\01??_R1A@?0A@EA@Derived@@8" = comdat any
41 $"\01??_R1A@?0A@EA@Base@@8" = comdat any
43 $"\01??_R0?AUBase@@@8" = comdat any
45 $"\01??_R3Base@@8" = comdat any
47 $"\01??_R2Base@@8" = comdat any
49 $"\01??_7Base@@6B@" = comdat largest
51 $"\01??_R4Base@@6B@" = comdat any
53 @"\01?D@@3UDerived@@A" = global %struct.Derived zeroinitializer, align 8
54 @0 = private unnamed_addr constant { [2 x i8*] } { [2 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4Derived@@6B@" to i8*), i8* bitcast (i32 (%struct.Derived*)* @"\01?virt_method@Derived@@UEBAHXZ" to i8*)] }, comdat($"\01??_7Derived@@6B@")
55 @"\01??_R4Derived@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor13* @"\01??_R0?AUDerived@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3Derived@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.CompleteObjectLocator* @"\01??_R4Derived@@6B@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
56 @"\01??_7type_info@@6B@" = external constant i8*
57 @"\01??_R0?AUDerived@@@8" = linkonce_odr global %rtti.TypeDescriptor13 { i8** @"\01??_7type_info@@6B@", i8* null, [14 x i8] c".?AUDerived@@\00" }, comdat
58 @__ImageBase = external constant i8
59 @"\01??_R3Derived@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 2, i32 trunc (i64 sub nuw nsw (i64 ptrtoint ([3 x i32]* @"\01??_R2Derived@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
60 @"\01??_R2Derived@@8" = linkonce_odr constant [3 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A@EA@Derived@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A@EA@Base@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0], comdat
61 @"\01??_R1A@?0A@EA@Derived@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor13* @"\01??_R0?AUDerived@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 1, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3Derived@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
62 @"\01??_R1A@?0A@EA@Base@@8" = linkonce_odr constant %rtti.BaseClassDescriptor { i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor10* @"\01??_R0?AUBase@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3Base@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
63 @"\01??_R0?AUBase@@@8" = linkonce_odr global %rtti.TypeDescriptor10 { i8** @"\01??_7type_info@@6B@", i8* null, [11 x i8] c".?AUBase@@\00" }, comdat
64 @"\01??_R3Base@@8" = linkonce_odr constant %rtti.ClassHierarchyDescriptor { i32 0, i32 0, i32 1, i32 trunc (i64 sub nuw nsw (i64 ptrtoint ([2 x i32]* @"\01??_R2Base@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
65 @"\01??_R2Base@@8" = linkonce_odr constant [2 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.BaseClassDescriptor* @"\01??_R1A@?0A@EA@Base@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 0], comdat
66 @1 = private unnamed_addr constant { [2 x i8*] } { [2 x i8*] [i8* bitcast (%rtti.CompleteObjectLocator* @"\01??_R4Base@@6B@" to i8*), i8* bitcast (void ()* @_purecall to i8*)] }, comdat($"\01??_7Base@@6B@")
67 @"\01??_R4Base@@6B@" = linkonce_odr constant %rtti.CompleteObjectLocator { i32 1, i32 0, i32 0, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.TypeDescriptor10* @"\01??_R0?AUBase@@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.ClassHierarchyDescriptor* @"\01??_R3Base@@8" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (%rtti.CompleteObjectLocator* @"\01??_R4Base@@6B@" to i64), i64 ptrtoint (i8* @__ImageBase to i64)) to i32) }, comdat
68 @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_cfguard.cpp, i8* null }]
70 @"\01??_7Derived@@6B@" = unnamed_addr alias i8*, getelementptr inbounds ({ [2 x i8*] }, { [2 x i8*] }* @0, i32 0, i32 0, i32 1)
71 @"\01??_7Base@@6B@" = unnamed_addr alias i8*, getelementptr inbounds ({ [2 x i8*] }, { [2 x i8*] }* @1, i32 0, i32 0, i32 1)
73 ; Function Attrs: noinline nounwind
74 define internal void @"\01??__ED@@YAXXZ"() #0 {
76 %call = call %struct.Derived* @"\01??0Derived@@QEAA@XZ"(%struct.Derived* @"\01?D@@3UDerived@@A") #2
80 ; Function Attrs: noinline nounwind optnone
81 define linkonce_odr %struct.Derived* @"\01??0Derived@@QEAA@XZ"(%struct.Derived* returned %this) unnamed_addr #1 comdat align 2 {
83 %this.addr = alloca %struct.Derived*, align 8
84 store %struct.Derived* %this, %struct.Derived** %this.addr, align 8
85 %this1 = load %struct.Derived*, %struct.Derived** %this.addr, align 8
86 %0 = bitcast %struct.Derived* %this1 to %struct.Base*
87 %call = call %struct.Base* @"\01??0Base@@QEAA@XZ"(%struct.Base* %0) #2
88 %1 = bitcast %struct.Derived* %this1 to i32 (...)***
89 store i32 (...)** bitcast (i8** @"\01??_7Derived@@6B@" to i32 (...)**), i32 (...)*** %1, align 8
90 ret %struct.Derived* %this1
93 ; Function Attrs: noinline nounwind optnone
94 define void @"\01?address_taken@@YAXXZ"() #1 {
99 ; Function Attrs: noinline nounwind optnone
100 define void ()* @"\01?foo@@YAP6AXXZPEAUBase@@@Z"(%struct.Base* %B) #1 {
102 %retval = alloca void ()*, align 8
103 %B.addr = alloca %struct.Base*, align 8
104 store %struct.Base* %B, %struct.Base** %B.addr, align 8
105 %0 = load %struct.Base*, %struct.Base** %B.addr, align 8
106 %1 = bitcast %struct.Base* %0 to i32 (%struct.Base*)***
107 %vtable = load i32 (%struct.Base*)**, i32 (%struct.Base*)*** %1, align 8
108 %vfn = getelementptr inbounds i32 (%struct.Base*)*, i32 (%struct.Base*)** %vtable, i64 0
109 %2 = load i32 (%struct.Base*)*, i32 (%struct.Base*)** %vfn, align 8
110 %call = call i32 %2(%struct.Base* %0)
111 %tobool = icmp ne i32 %call, 0
112 br i1 %tobool, label %if.then, label %if.end
114 if.then: ; preds = %entry
115 store void ()* @"\01?address_taken@@YAXXZ", void ()** %retval, align 8
118 if.end: ; preds = %entry
119 store void ()* null, void ()** %retval, align 8
122 return: ; preds = %if.end, %if.then
123 %3 = load void ()*, void ()** %retval, align 8
127 ; Function Attrs: noinline nounwind optnone
128 define linkonce_odr %struct.Base* @"\01??0Base@@QEAA@XZ"(%struct.Base* returned %this) unnamed_addr #1 comdat align 2 {
130 %this.addr = alloca %struct.Base*, align 8
131 store %struct.Base* %this, %struct.Base** %this.addr, align 8
132 %this1 = load %struct.Base*, %struct.Base** %this.addr, align 8
133 %0 = bitcast %struct.Base* %this1 to i32 (...)***
134 store i32 (...)** bitcast (i8** @"\01??_7Base@@6B@" to i32 (...)**), i32 (...)*** %0, align 8
135 ret %struct.Base* %this1
138 ; Function Attrs: noinline nounwind optnone
139 define linkonce_odr i32 @"\01?virt_method@Derived@@UEBAHXZ"(%struct.Derived* %this) unnamed_addr #1 comdat align 2 {
141 %this.addr = alloca %struct.Derived*, align 8
142 store %struct.Derived* %this, %struct.Derived** %this.addr, align 8
143 %this1 = load %struct.Derived*, %struct.Derived** %this.addr, align 8
147 declare dllimport void @_purecall() unnamed_addr
149 ; Function Attrs: noinline nounwind
150 define internal void @_GLOBAL__sub_I_cfguard.cpp() #0 {
152 call void @"\01??__ED@@YAXXZ"()
156 attributes #0 = { noinline nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
157 attributes #1 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-features"="+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
158 attributes #2 = { nounwind }
160 !llvm.module.flags = !{!0, !1}
163 !0 = !{i32 2, !"cfguard", i32 1}
164 !1 = !{i32 1, !"wchar_size", i32 2}
165 !2 = !{!"clang version 6.0.0 "}