forked from OSchip/llvm-project
364 lines
15 KiB
C++
364 lines
15 KiB
C++
// RUN: %clang_cc1 -fno-rtti -emit-llvm %s -o - -cxx-abi microsoft -triple=i386-pc-win32 | FileCheck %s
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struct B1 {
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void foo();
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int b;
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};
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struct B2 {
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void foo();
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};
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struct Single : B1 {
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void foo();
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};
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struct Multiple : B1, B2 {
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void foo();
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};
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struct Virtual : virtual B1 {
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int v;
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void foo();
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};
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struct POD {
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int a;
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int b;
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};
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struct Polymorphic {
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virtual void myVirtual();
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int a;
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int b;
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};
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// This class uses the virtual inheritance model, yet its vbptr offset is not 0.
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// We still use zero for the null field offset, despite it being a valid field
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// offset.
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struct NonZeroVBPtr : POD, Virtual {
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int n;
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};
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struct Unspecified;
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// Check that we can lower the LLVM types and get the null initializers right.
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int Single ::*s_d_memptr;
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int Polymorphic::*p_d_memptr;
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int Multiple ::*m_d_memptr;
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int Virtual ::*v_d_memptr;
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int NonZeroVBPtr::*n_d_memptr;
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int Unspecified::*u_d_memptr;
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// CHECK: @"\01?s_d_memptr@@3PQSingle@@HA" = global i32 -1, align 4
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// CHECK: @"\01?p_d_memptr@@3PQPolymorphic@@HA" = global i32 0, align 4
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// CHECK: @"\01?m_d_memptr@@3PQMultiple@@HA" = global i32 -1, align 4
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// CHECK: @"\01?v_d_memptr@@3PQVirtual@@HA" = global { i32, i32 }
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// CHECK: { i32 0, i32 -1 }, align 4
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// CHECK: @"\01?n_d_memptr@@3PQNonZeroVBPtr@@HA" = global { i32, i32 }
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// CHECK: { i32 0, i32 -1 }, align 4
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// CHECK: @"\01?u_d_memptr@@3PQUnspecified@@HA" = global { i32, i32, i32 }
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// CHECK: { i32 0, i32 0, i32 -1 }, align 4
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void (Single ::*s_f_memptr)();
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void (Multiple::*m_f_memptr)();
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void (Virtual ::*v_f_memptr)();
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// CHECK: @"\01?s_f_memptr@@3P8Single@@AEXXZA" = global i8* null, align 4
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// CHECK: @"\01?m_f_memptr@@3P8Multiple@@AEXXZA" = global { i8*, i32 } zeroinitializer, align 4
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// CHECK: @"\01?v_f_memptr@@3P8Virtual@@AEXXZA" = global { i8*, i32, i32 } zeroinitializer, align 4
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// We can define Unspecified after locking in the inheritance model.
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struct Unspecified : Virtual {
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void foo();
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int u;
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};
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struct UnspecWithVBPtr;
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int UnspecWithVBPtr::*forceUnspecWithVBPtr;
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struct UnspecWithVBPtr : B1, virtual B2 {
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int u;
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void foo();
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};
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// Test emitting non-virtual member pointers in a non-constexpr setting.
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void EmitNonVirtualMemberPointers() {
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void (Single ::*s_f_memptr)() = &Single::foo;
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void (Multiple ::*m_f_memptr)() = &Multiple::foo;
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void (Virtual ::*v_f_memptr)() = &Virtual::foo;
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void (Unspecified::*u_f_memptr)() = &Unspecified::foo;
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void (UnspecWithVBPtr::*u2_f_memptr)() = &UnspecWithVBPtr::foo;
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// CHECK: define void @"\01?EmitNonVirtualMemberPointers@@YAXXZ"() #0 {
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// CHECK: alloca i8*, align 4
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// CHECK: alloca { i8*, i32 }, align 4
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// CHECK: alloca { i8*, i32, i32 }, align 4
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// CHECK: alloca { i8*, i32, i32, i32 }, align 4
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// CHECK: store i8* bitcast (void (%{{.*}}*)* @"\01?foo@Single@@QAEXXZ" to i8*), i8** %{{.*}}, align 4
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// CHECK: store { i8*, i32 }
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// CHECK: { i8* bitcast (void (%{{.*}}*)* @"\01?foo@Multiple@@QAEXXZ" to i8*), i32 0 },
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// CHECK: { i8*, i32 }* %{{.*}}, align 4
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// CHECK: store { i8*, i32, i32 }
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// CHECK: { i8* bitcast (void (%{{.*}}*)* @"\01?foo@Virtual@@QAEXXZ" to i8*), i32 0, i32 0 },
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// CHECK: { i8*, i32, i32 }* %{{.*}}, align 4
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// CHECK: store { i8*, i32, i32, i32 }
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// CHECK: { i8* bitcast (void (%{{.*}}*)* @"\01?foo@Unspecified@@QAEXXZ" to i8*), i32 0, i32 0, i32 0 },
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// CHECK: { i8*, i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: store { i8*, i32, i32, i32 }
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// CHECK: { i8* bitcast (void (%{{.*}}*)* @"\01?foo@UnspecWithVBPtr@@QAEXXZ" to i8*),
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// CHECK: i32 0, i32 4, i32 0 },
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// CHECK: { i8*, i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: ret void
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// CHECK: }
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}
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void podMemPtrs() {
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int POD::*memptr;
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memptr = &POD::a;
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memptr = &POD::b;
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if (memptr)
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memptr = 0;
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// Check that member pointers use the right offsets and that null is -1.
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// CHECK: define void @"\01?podMemPtrs@@YAXXZ"() #0 {
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// CHECK: %[[memptr:.*]] = alloca i32, align 4
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// CHECK-NEXT: store i32 0, i32* %[[memptr]], align 4
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// CHECK-NEXT: store i32 4, i32* %[[memptr]], align 4
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// CHECK-NEXT: %[[memptr_val:.*]] = load i32* %[[memptr]], align 4
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// CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], -1
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// CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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// CHECK: store i32 -1, i32* %[[memptr]], align 4
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// CHECK: ret void
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// CHECK: }
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}
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void polymorphicMemPtrs() {
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int Polymorphic::*memptr;
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memptr = &Polymorphic::a;
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memptr = &Polymorphic::b;
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if (memptr)
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memptr = 0;
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// Member pointers for polymorphic classes include the vtable slot in their
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// offset and use 0 to represent null.
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// CHECK: define void @"\01?polymorphicMemPtrs@@YAXXZ"() #0 {
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// CHECK: %[[memptr:.*]] = alloca i32, align 4
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// CHECK-NEXT: store i32 4, i32* %[[memptr]], align 4
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// CHECK-NEXT: store i32 8, i32* %[[memptr]], align 4
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// CHECK-NEXT: %[[memptr_val:.*]] = load i32* %[[memptr]], align 4
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// CHECK-NEXT: %{{.*}} = icmp ne i32 %[[memptr_val]], 0
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// CHECK-NEXT: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
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// CHECK: store i32 0, i32* %[[memptr]], align 4
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// CHECK: ret void
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// CHECK: }
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}
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bool nullTestDataUnspecified(int Unspecified::*mp) {
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return mp;
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// CHECK: define zeroext i1 @"\01?nullTestDataUnspecified@@YA_NPQUnspecified@@H@Z"{{.*}} {
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// CHECK: %{{.*}} = load { i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: store { i32, i32, i32 } {{.*}} align 4
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// CHECK: %[[mp:.*]] = load { i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: %[[mp0:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 0
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// CHECK: %[[cmp0:.*]] = icmp ne i32 %[[mp0]], 0
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// CHECK: %[[mp1:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 1
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// CHECK: %[[cmp1:.*]] = icmp ne i32 %[[mp1]], 0
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// CHECK: %[[and0:.*]] = and i1 %[[cmp0]], %[[cmp1]]
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// CHECK: %[[mp2:.*]] = extractvalue { i32, i32, i32 } %[[mp]], 2
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// CHECK: %[[cmp2:.*]] = icmp ne i32 %[[mp2]], -1
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// CHECK: %[[and1:.*]] = and i1 %[[and0]], %[[cmp2]]
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// CHECK: ret i1 %[[and1]]
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// CHECK: }
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}
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bool nullTestFunctionUnspecified(void (Unspecified::*mp)()) {
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return mp;
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// CHECK: define zeroext i1 @"\01?nullTestFunctionUnspecified@@YA_NP8Unspecified@@AEXXZ@Z"{{.*}} {
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// CHECK: %{{.*}} = load { i8*, i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: store { i8*, i32, i32, i32 } {{.*}} align 4
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// CHECK: %[[mp:.*]] = load { i8*, i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: %[[mp0:.*]] = extractvalue { i8*, i32, i32, i32 } %[[mp]], 0
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// CHECK: %[[cmp0:.*]] = icmp ne i8* %[[mp0]], null
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// CHECK: ret i1 %[[cmp0]]
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// CHECK: }
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}
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int loadDataMemberPointerVirtual(Virtual *o, int Virtual::*memptr) {
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return o->*memptr;
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// Test that we can unpack this aggregate member pointer and load the member
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// data pointer.
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// CHECK: define i32 @"\01?loadDataMemberPointerVirtual@@YAHPAUVirtual@@PQ1@H@Z"{{.*}} {
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// CHECK: %[[o:.*]] = load %{{.*}}** %{{.*}}, align 4
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// CHECK: %[[memptr:.*]] = load { i32, i32 }* %{{.*}}, align 4
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// CHECK: %[[memptr0:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 0
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// CHECK: %[[memptr1:.*]] = extractvalue { i32, i32 } %[[memptr:.*]], 1
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// CHECK: %[[v6:.*]] = bitcast %{{.*}}* %[[o]] to i8*
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// CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %[[v6]], i32 0
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// CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8**
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// CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]]
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// CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr1]]
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// CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32*
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// CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]]
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// CHECK: %[[v10:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]]
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// CHECK: %[[offset:.*]] = getelementptr inbounds i8* %[[v10]], i32 %[[memptr0]]
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// CHECK: %[[v11:.*]] = bitcast i8* %[[offset]] to i32*
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// CHECK: %[[v12:.*]] = load i32* %[[v11]]
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// CHECK: ret i32 %[[v12]]
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// CHECK: }
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}
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int loadDataMemberPointerUnspecified(Unspecified *o, int Unspecified::*memptr) {
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return o->*memptr;
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// Test that we can unpack this aggregate member pointer and load the member
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// data pointer.
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// CHECK: define i32 @"\01?loadDataMemberPointerUnspecified@@YAHPAUUnspecified@@PQ1@H@Z"{{.*}} {
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// CHECK: %[[o:.*]] = load %{{.*}}** %{{.*}}, align 4
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// CHECK: %[[memptr:.*]] = load { i32, i32, i32 }* %{{.*}}, align 4
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// CHECK: %[[memptr0:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 0
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// CHECK: %[[memptr1:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 1
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// CHECK: %[[memptr2:.*]] = extractvalue { i32, i32, i32 } %[[memptr:.*]], 2
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// CHECK: %[[base:.*]] = bitcast %{{.*}}* %[[o]] to i8*
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// CHECK: %[[is_vbase:.*]] = icmp ne i32 %[[memptr2]], 0
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// CHECK: br i1 %[[is_vbase]], label %[[vadjust:.*]], label %[[skip:.*]]
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//
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// CHECK: [[vadjust]]
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// CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %[[base]], i32 %[[memptr1]]
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// CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8**
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// CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]]
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// CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr2]]
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// CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32*
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// CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]]
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// CHECK: %[[base_adj:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]]
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//
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// CHECK: [[skip]]
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// CHECK: %[[new_base:.*]] = phi i8* [ %[[base]], %{{.*}} ], [ %[[base_adj]], %[[vadjust]] ]
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// CHECK: %[[offset:.*]] = getelementptr inbounds i8* %[[new_base]], i32 %[[memptr0]]
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// CHECK: %[[v11:.*]] = bitcast i8* %[[offset]] to i32*
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// CHECK: %[[v12:.*]] = load i32* %[[v11]]
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// CHECK: ret i32 %[[v12]]
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// CHECK: }
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}
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void callMemberPointerSingle(Single *o, void (Single::*memptr)()) {
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(o->*memptr)();
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// Just look for an indirect thiscall.
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// CHECK: define void @"\01?callMemberPointerSingle@@{{.*}} #0 {
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// CHECK: call x86_thiscallcc void %{{.*}}(%{{.*}} %{{.*}})
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// CHECK: ret void
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// CHECK: }
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}
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void callMemberPointerMultiple(Multiple *o, void (Multiple::*memptr)()) {
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(o->*memptr)();
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// CHECK: define void @"\01?callMemberPointerMultiple@@{{.*}} #0 {
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// CHECK: %[[memptr0:.*]] = extractvalue { i8*, i32 } %{{.*}}, 0
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// CHECK: %[[memptr1:.*]] = extractvalue { i8*, i32 } %{{.*}}, 1
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// CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8* %{{.*}}, i32 %[[memptr1]]
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// CHECK: %[[this:.*]] = bitcast i8* %[[this_adjusted]] to {{.*}}
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// CHECK: %[[fptr:.*]] = bitcast i8* %[[memptr0]] to {{.*}}
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// CHECK: call x86_thiscallcc void %[[fptr]](%{{.*}} %[[this]])
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// CHECK: ret void
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// CHECK: }
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}
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void callMemberPointerVirtualBase(Virtual *o, void (Virtual::*memptr)()) {
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(o->*memptr)();
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// This shares a lot with virtual data member pointers.
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// CHECK: define void @"\01?callMemberPointerVirtualBase@@{{.*}} #0 {
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// CHECK: %[[memptr0:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 0
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// CHECK: %[[memptr1:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 1
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// CHECK: %[[memptr2:.*]] = extractvalue { i8*, i32, i32 } %{{.*}}, 2
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// CHECK: %[[vbptr:.*]] = getelementptr inbounds i8* %{{.*}}, i32 0
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// CHECK: %[[vbptr_a:.*]] = bitcast i8* %[[vbptr]] to i8**
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// CHECK: %[[vbtable:.*]] = load i8** %[[vbptr_a:.*]]
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// CHECK: %[[v7:.*]] = getelementptr inbounds i8* %[[vbtable]], i32 %[[memptr2]]
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// CHECK: %[[v8:.*]] = bitcast i8* %[[v7]] to i32*
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// CHECK: %[[vbase_offs:.*]] = load i32* %[[v8]]
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// CHECK: %[[v10:.*]] = getelementptr inbounds i8* %[[vbptr]], i32 %[[vbase_offs]]
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// CHECK: %[[this_adjusted:.*]] = getelementptr inbounds i8* %[[v10]], i32 %[[memptr1]]
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// CHECK: %[[fptr:.*]] = bitcast i8* %[[memptr0]] to void ({{.*}})
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// CHECK: %[[this:.*]] = bitcast i8* %[[this_adjusted]] to {{.*}}
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// CHECK: call x86_thiscallcc void %[[fptr]](%{{.*}} %[[this]])
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// CHECK: ret void
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// CHECK: }
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}
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bool compareSingleFunctionMemptr(void (Single::*l)(), void (Single::*r)()) {
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return l == r;
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// Should only be one comparison here.
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// CHECK: define zeroext i1 @"\01?compareSingleFunctionMemptr@@YA_NP8Single@@AEXXZ0@Z"{{.*}} {
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// CHECK-NOT: icmp
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// CHECK: %[[r:.*]] = icmp eq
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// CHECK-NOT: icmp
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// CHECK: ret i1 %[[r]]
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// CHECK: }
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}
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bool compareNeqSingleFunctionMemptr(void (Single::*l)(), void (Single::*r)()) {
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return l != r;
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// Should only be one comparison here.
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// CHECK: define zeroext i1 @"\01?compareNeqSingleFunctionMemptr@@YA_NP8Single@@AEXXZ0@Z"{{.*}} {
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// CHECK-NOT: icmp
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// CHECK: %[[r:.*]] = icmp ne
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// CHECK-NOT: icmp
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// CHECK: ret i1 %[[r]]
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// CHECK: }
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}
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bool unspecFuncMemptrEq(void (Unspecified::*l)(), void (Unspecified::*r)()) {
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return l == r;
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// CHECK: define zeroext i1 @"\01?unspecFuncMemptrEq@@YA_NP8Unspecified@@AEXXZ0@Z"{{.*}} {
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// CHECK: %[[lhs0:.*]] = extractvalue { i8*, i32, i32, i32 } %[[l:.*]], 0
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r:.*]], 0
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// CHECK: %[[cmp0:.*]] = icmp eq i8* %[[lhs0]], %{{.*}}
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 1
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 1
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// CHECK: %[[cmp1:.*]] = icmp eq i32
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 2
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 2
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// CHECK: %[[cmp2:.*]] = icmp eq i32
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// CHECK: %[[res12:.*]] = and i1 %[[cmp1]], %[[cmp2]]
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 3
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 3
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// CHECK: %[[cmp3:.*]] = icmp eq i32
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// CHECK: %[[res123:.*]] = and i1 %[[res12]], %[[cmp3]]
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// CHECK: %[[iszero:.*]] = icmp eq i8* %[[lhs0]], null
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// CHECK: %[[bits_or_null:.*]] = or i1 %[[res123]], %[[iszero]]
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// CHECK: %{{.*}} = and i1 %[[bits_or_null]], %[[cmp0]]
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// CHECK: ret i1 %{{.*}}
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// CHECK: }
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}
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bool unspecFuncMemptrNeq(void (Unspecified::*l)(), void (Unspecified::*r)()) {
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return l != r;
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// CHECK: define zeroext i1 @"\01?unspecFuncMemptrNeq@@YA_NP8Unspecified@@AEXXZ0@Z"{{.*}} {
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// CHECK: %[[lhs0:.*]] = extractvalue { i8*, i32, i32, i32 } %[[l:.*]], 0
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r:.*]], 0
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// CHECK: %[[cmp0:.*]] = icmp ne i8* %[[lhs0]], %{{.*}}
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 1
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 1
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// CHECK: %[[cmp1:.*]] = icmp ne i32
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 2
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 2
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// CHECK: %[[cmp2:.*]] = icmp ne i32
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// CHECK: %[[res12:.*]] = or i1 %[[cmp1]], %[[cmp2]]
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[l]], 3
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// CHECK: %{{.*}} = extractvalue { i8*, i32, i32, i32 } %[[r]], 3
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|
// CHECK: %[[cmp3:.*]] = icmp ne i32
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|
// CHECK: %[[res123:.*]] = or i1 %[[res12]], %[[cmp3]]
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|
// CHECK: %[[iszero:.*]] = icmp ne i8* %[[lhs0]], null
|
|
// CHECK: %[[bits_or_null:.*]] = and i1 %[[res123]], %[[iszero]]
|
|
// CHECK: %{{.*}} = or i1 %[[bits_or_null]], %[[cmp0]]
|
|
// CHECK: ret i1 %{{.*}}
|
|
// CHECK: }
|
|
}
|
|
|
|
bool unspecDataMemptrEq(int Unspecified::*l, int Unspecified::*r) {
|
|
return l == r;
|
|
// CHECK: define zeroext i1 @"\01?unspecDataMemptrEq@@YA_NPQUnspecified@@H0@Z"{{.*}} {
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|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 0
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|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 0
|
|
// CHECK: icmp eq i32
|
|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 1
|
|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 1
|
|
// CHECK: icmp eq i32
|
|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 2
|
|
// CHECK: extractvalue { i32, i32, i32 } %{{.*}}, 2
|
|
// CHECK: icmp eq i32
|
|
// CHECK: and i1
|
|
// CHECK: and i1
|
|
// CHECK: ret i1
|
|
// CHECK: }
|
|
}
|