73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
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// RUN: %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple %itanium_abi_triple | FileCheck %s --check-prefixes=CHECK,ITANIUM
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// RUN: %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple x86_64-pc-win32 2>&1 | FileCheck %s --check-prefixes=CHECK,MSABI
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namespace std {
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struct strong_ordering {
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int n;
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constexpr operator int() const { return n; }
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static const strong_ordering less, equal, greater;
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};
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constexpr strong_ordering strong_ordering::less = {-1};
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constexpr strong_ordering strong_ordering::equal = {0};
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constexpr strong_ordering strong_ordering::greater = {1};
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}
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struct Primary {
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virtual void f();
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std::strong_ordering operator<=>(const Primary&) const = default;
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};
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struct X {
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virtual struct Y &operator=(Y&&);
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virtual struct Y &operator=(const Y&);
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std::strong_ordering operator<=>(const X&) const = default;
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};
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// The vtable for Y should contain the following entries in order:
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// - Primary::f
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// - Y::operator<=>
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// - Y::operator=(const Y&) (implicit)
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// - Y::operator=(Y&&) (implicit)
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// - Y::operator==(const Y&) const (implicit)
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// See:
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// https://github.com/itanium-cxx-abi/cxx-abi/issues/83 for assignment operator
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// https://github.com/itanium-cxx-abi/cxx-abi/issues/88 for equality comparison
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// FIXME: What rule does MSVC use?
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struct Y : Primary, X {
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virtual std::strong_ordering operator<=>(const Y&) const = default;
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};
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Y y;
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// ITANIUM: @_ZTV1Y = {{.*}}constant {{.*}} null, {{.*}} @_ZTI1Y {{.*}} @_ZN7Primary1fEv {{.*}} @_ZNK1YssERKS_ {{.*}} @_ZN1YaSERKS_ {{.*}} @_ZN1YaSEOS_ {{.*}} @_ZNK1YeqERKS_ {{.*}} -[[POINTERSIZE:4|8]]
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// ITANIUM-SAME: @_ZTI1Y {{.*}} @_ZThn[[POINTERSIZE]]_N1YaSERKS_
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struct A {
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void operator<=>(int);
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};
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// ITANIUM: define {{.*}}@_ZN1AssEi(
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// MSABI: define {{.*}}@"??__MA@@QEAAXH@Z"(
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void A::operator<=>(int) {}
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// ITANIUM: define {{.*}}@_Zssi1A(
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// MSABI: define {{.*}}@"??__M@YAXHUA@@@Z"(
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void operator<=>(int, A) {}
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int operator<=>(A, A);
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// ITANIUM: define {{.*}}_Z1f1A(
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// MSABI: define {{.*}}@"?f@@YAHUA@@@Z"(
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int f(A a) {
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// ITANIUM: %[[RET:.*]] = call {{.*}}_Zss1AS_(
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// ITANIUM: ret i32 %[[RET]]
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// MSABI: %[[RET:.*]] = call {{.*}}"??__M@YAHUA@@0@Z"(
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// MSABI: ret i32 %[[RET]]
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return a <=> a;
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}
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// CHECK-LABEL: define {{.*}}builtin_cmp
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void builtin_cmp(int a) {
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// CHECK: icmp slt
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// CHECK: select
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// CHECK: icmp eq
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// CHECK: select
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a <=> a;
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}
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