File: attr-cpuspecific.cpp

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llvm-toolchain-11 1%3A11.0.1-2~deb10u1
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,LINUX
// RUN: %clang_cc1 -triple x86_64-windows-pc -fms-compatibility -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,WINDOWS

struct S {
  __attribute__((cpu_specific(atom)))
  void Func(){}
  __attribute__((cpu_dispatch(ivybridge,atom)))
  void Func(){}
};

void foo() {
  S s;
  s.Func();
}

// LINUX: @_ZN1S4FuncEv = weak_odr alias void (%struct.S*), void (%struct.S*)* @_ZN1S4FuncEv.ifunc
// LINUX: @_ZN1S4FuncEv.ifunc = weak_odr ifunc void (%struct.S*), void (%struct.S*)* ()* @_ZN1S4FuncEv.resolver
// LINUX: define weak_odr void (%struct.S*)* @_ZN1S4FuncEv.resolver
// LINUX: ret void (%struct.S*)* @_ZN1S4FuncEv.S
// LINUX: ret void (%struct.S*)* @_ZN1S4FuncEv.O
// LINUX: declare void @_ZN1S4FuncEv.S
// LINUX: define linkonce_odr void @_ZN1S4FuncEv.O

// WINDOWS: define weak_odr dso_local void @"?Func@S@@QEAAXXZ"(%struct.S* %0) comdat
// WINDOWS: musttail call void @"?Func@S@@QEAAXXZ.S"(%struct.S* %0)
// WINDOWS: musttail call void @"?Func@S@@QEAAXXZ.O"(%struct.S* %0)
// WINDOWS: declare dso_local void @"?Func@S@@QEAAXXZ.S"
// WINDOWS: define linkonce_odr dso_local void @"?Func@S@@QEAAXXZ.O"