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 { ptr }
17 %rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 }
18 %rtti.TypeDescriptor13 = type { ptr, ptr, [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 { ptr, ptr, [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 $"\01??_R4Base@@6B@" = comdat any
53 @"\01?D@@3UDerived@@A" = global %struct.Derived zeroinitializer, align 8
54 @0 = private unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"\01??_R4Derived@@6B@", ptr @"\01?virt_method@Derived@@UEBAHXZ"] }, comdat($"\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 (ptr @"\01??_R0?AUDerived@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R3Derived@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R4Derived@@6B@" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
56 @"\01??_7type_info@@6B@" = external constant ptr
57 @"\01??_R0?AUDerived@@@8" = linkonce_odr global %rtti.TypeDescriptor13 { ptr @"\01??_7type_info@@6B@", ptr 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 (ptr @"\01??_R2Derived@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
60 @"\01??_R2Derived@@8" = linkonce_odr constant [3 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R1A@?0A@EA@Derived@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R1A@?0A@EA@Base@@8" to i64), i64 ptrtoint (ptr @__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 (ptr @"\01??_R0?AUDerived@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 1, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R3Derived@@8" to i64), i64 ptrtoint (ptr @__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 (ptr @"\01??_R0?AUBase@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0, i32 0, i32 -1, i32 0, i32 64, i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R3Base@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
63 @"\01??_R0?AUBase@@@8" = linkonce_odr global %rtti.TypeDescriptor10 { ptr @"\01??_7type_info@@6B@", ptr 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 (ptr @"\01??_R2Base@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
65 @"\01??_R2Base@@8" = linkonce_odr constant [2 x i32] [i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R1A@?0A@EA@Base@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 0], comdat
66 @1 = private unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"\01??_R4Base@@6B@", ptr @_purecall] }, 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 (ptr @"\01??_R0?AUBase@@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R3Base@@8" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32), i32 trunc (i64 sub nuw nsw (i64 ptrtoint (ptr @"\01??_R4Base@@6B@" to i64), i64 ptrtoint (ptr @__ImageBase to i64)) to i32) }, comdat
68 @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_cfguard.cpp, ptr null }]
70 @"\01??_7Derived@@6B@" = unnamed_addr alias ptr, getelementptr inbounds ({ [2 x ptr] }, ptr @0, i32 0, i32 0, i32 1)
71 @"\01??_7Base@@6B@" = unnamed_addr alias ptr, getelementptr inbounds ({ [2 x ptr] }, ptr @1, i32 0, i32 0, i32 1)
73 ; Function Attrs: noinline nounwind
74 define internal void @"\01??__ED@@YAXXZ"() #0 {
76 %call = call ptr @"\01??0Derived@@QEAA@XZ"(ptr @"\01?D@@3UDerived@@A") #2
80 ; Function Attrs: noinline nounwind optnone
81 define linkonce_odr ptr @"\01??0Derived@@QEAA@XZ"(ptr returned %this) unnamed_addr #1 comdat align 2 {
83 %this.addr = alloca ptr, align 8
84 store ptr %this, ptr %this.addr, align 8
85 %this1 = load ptr, ptr %this.addr, align 8
86 %0 = bitcast ptr %this1 to ptr
87 %call = call ptr @"\01??0Base@@QEAA@XZ"(ptr %0) #2
88 %1 = bitcast ptr %this1 to ptr
89 store ptr @"\01??_7Derived@@6B@", ptr %1, align 8
93 ; Function Attrs: noinline nounwind optnone
94 define void @"\01?address_taken@@YAXXZ"() #1 {
99 ; Function Attrs: noinline nounwind optnone
100 define ptr @"\01?foo@@YAP6AXXZPEAUBase@@@Z"(ptr %B) #1 {
102 %retval = alloca ptr, align 8
103 %B.addr = alloca ptr, align 8
104 store ptr %B, ptr %B.addr, align 8
105 %0 = load ptr, ptr %B.addr, align 8
106 %1 = bitcast ptr %0 to ptr
107 %vtable = load ptr, ptr %1, align 8
108 %vfn = getelementptr inbounds ptr, ptr %vtable, i64 0
109 %2 = load ptr, ptr %vfn, align 8
110 %call = call i32 %2(ptr %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 ptr @"\01?address_taken@@YAXXZ", ptr %retval, align 8
118 if.end: ; preds = %entry
119 store ptr null, ptr %retval, align 8
122 return: ; preds = %if.end, %if.then
123 %3 = load ptr, ptr %retval, align 8
127 ; Function Attrs: noinline nounwind optnone
128 define linkonce_odr ptr @"\01??0Base@@QEAA@XZ"(ptr returned %this) unnamed_addr #1 comdat align 2 {
130 %this.addr = alloca ptr, align 8
131 store ptr %this, ptr %this.addr, align 8
132 %this1 = load ptr, ptr %this.addr, align 8
133 %0 = bitcast ptr %this1 to ptr
134 store ptr @"\01??_7Base@@6B@", ptr %0, align 8
138 ; Function Attrs: noinline nounwind optnone
139 define linkonce_odr i32 @"\01?virt_method@Derived@@UEBAHXZ"(ptr %this) unnamed_addr #1 comdat align 2 {
141 %this.addr = alloca ptr, align 8
142 store ptr %this, ptr %this.addr, align 8
143 %this1 = load ptr, ptr %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 "}