|  | // RUN: %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple %itanium_abi_triple | FileCheck %s --check-prefix=ITANIUM | 
|  | // RUN: not %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple %ms_abi_triple 2>&1 | FileCheck %s --check-prefix=MSABI | 
|  | // RUN: not %clang_cc1 -std=c++2a -emit-llvm %s -o - -triple %itanium_abi_triple -DBUILTIN 2>&1 | FileCheck %s --check-prefix=BUILTIN | 
|  | // MSABI: cannot mangle this three-way comparison operator yet | 
|  |  | 
|  | struct A { | 
|  | void operator<=>(int); | 
|  | }; | 
|  |  | 
|  | // ITANIUM: define {{.*}}@_ZN1AssEi( | 
|  | void A::operator<=>(int) {} | 
|  |  | 
|  | // ITANIUM: define {{.*}}@_Zssi1A( | 
|  | void operator<=>(int, A) {} | 
|  |  | 
|  | int operator<=>(A, A); | 
|  |  | 
|  | // ITANIUM: define {{.*}}_Z1f1A( | 
|  | int f(A a) { | 
|  | // ITANIUM: %[[RET:.*]] = call {{.*}}_Zss1AS_( | 
|  | // ITANIUM: ret i32 %[[RET]] | 
|  | return a <=> a; | 
|  | } | 
|  |  | 
|  | #ifdef BUILTIN | 
|  | void builtin(int a) { | 
|  | a <=> a; // BUILTIN: cannot compile this scalar expression yet | 
|  | } | 
|  | #endif |