1; RUN: llc < %s -mtriple=x86_64-pc-windows-msvc | FileCheck %s 2; Control Flow Guard is currently only available on Windows 3 4; CHECK: .set @feat.00, 2048 5 6; CHECK: .section .gfids$y 7; CHECK: .symidx "?address_taken@@YAXXZ" 8; CHECK: .symidx "?virt_method@Derived@@UEBAHXZ" 9 10; ModuleID = 'cfguard.cpp' 11source_filename = "cfguard.cpp" 12target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 13target triple = "x86_64-pc-windows-msvc" 14 15%struct.Derived = type { %struct.Base } 16%struct.Base = type { ptr } 17%rtti.CompleteObjectLocator = type { i32, i32, i32, i32, i32, i32 } 18%rtti.TypeDescriptor13 = type { ptr, ptr, [14 x i8] } 19%rtti.ClassHierarchyDescriptor = type { i32, i32, i32, i32 } 20%rtti.BaseClassDescriptor = type { i32, i32, i32, i32, i32, i32, i32 } 21%rtti.TypeDescriptor10 = type { ptr, ptr, [11 x i8] } 22 23$"\01??0Derived@@QEAA@XZ" = comdat any 24 25$"\01??0Base@@QEAA@XZ" = comdat any 26 27$"\01?virt_method@Derived@@UEBAHXZ" = comdat any 28 29$"\01??_7Derived@@6B@" = comdat largest 30 31$"\01??_R4Derived@@6B@" = comdat any 32 33$"\01??_R0?AUDerived@@@8" = comdat any 34 35$"\01??_R3Derived@@8" = comdat any 36 37$"\01??_R2Derived@@8" = comdat any 38 39$"\01??_R1A@?0A@EA@Derived@@8" = comdat any 40 41$"\01??_R1A@?0A@EA@Base@@8" = comdat any 42 43$"\01??_R0?AUBase@@@8" = comdat any 44 45$"\01??_R3Base@@8" = comdat any 46 47$"\01??_R2Base@@8" = comdat any 48 49$"\01??_7Base@@6B@" = comdat largest 50 51$"\01??_R4Base@@6B@" = comdat any 52 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 }] 69 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) 72 73; Function Attrs: noinline nounwind 74define internal void @"\01??__ED@@YAXXZ"() #0 { 75entry: 76 %call = call ptr @"\01??0Derived@@QEAA@XZ"(ptr @"\01?D@@3UDerived@@A") #2 77 ret void 78} 79 80; Function Attrs: noinline nounwind optnone 81define linkonce_odr ptr @"\01??0Derived@@QEAA@XZ"(ptr returned %this) unnamed_addr #1 comdat align 2 { 82entry: 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 90 ret ptr %this1 91} 92 93; Function Attrs: noinline nounwind optnone 94define void @"\01?address_taken@@YAXXZ"() #1 { 95entry: 96 ret void 97} 98 99; Function Attrs: noinline nounwind optnone 100define ptr @"\01?foo@@YAP6AXXZPEAUBase@@@Z"(ptr %B) #1 { 101entry: 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 113 114if.then: ; preds = %entry 115 store ptr @"\01?address_taken@@YAXXZ", ptr %retval, align 8 116 br label %return 117 118if.end: ; preds = %entry 119 store ptr null, ptr %retval, align 8 120 br label %return 121 122return: ; preds = %if.end, %if.then 123 %3 = load ptr, ptr %retval, align 8 124 ret ptr %3 125} 126 127; Function Attrs: noinline nounwind optnone 128define linkonce_odr ptr @"\01??0Base@@QEAA@XZ"(ptr returned %this) unnamed_addr #1 comdat align 2 { 129entry: 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 8 135 ret ptr %this1 136} 137 138; Function Attrs: noinline nounwind optnone 139define linkonce_odr i32 @"\01?virt_method@Derived@@UEBAHXZ"(ptr %this) unnamed_addr #1 comdat align 2 { 140entry: 141 %this.addr = alloca ptr, align 8 142 store ptr %this, ptr %this.addr, align 8 143 %this1 = load ptr, ptr %this.addr, align 8 144 ret i32 42 145} 146 147declare dllimport void @_purecall() unnamed_addr 148 149; Function Attrs: noinline nounwind 150define internal void @_GLOBAL__sub_I_cfguard.cpp() #0 { 151entry: 152 call void @"\01??__ED@@YAXXZ"() 153 ret void 154} 155 156attributes #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" } 157attributes #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" } 158attributes #2 = { nounwind } 159 160!llvm.module.flags = !{!0, !1} 161!llvm.ident = !{!2} 162 163!0 = !{i32 2, !"cfguard", i32 1} 164!1 = !{i32 1, !"wchar_size", i32 2} 165!2 = !{!"clang version 6.0.0 "} 166