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// RUN: %clang_cc1 < %s -triple %itanium_abi_triple -fms-extensions -O2 -disable-llvm-passes -emit-llvm -x c++ | FileCheck %s
// Test attribute 'optnone' on methods:
// -- member functions;
// -- static member functions.
// Verify that all methods of struct A are associated to the same attribute set.
// The attribute set shall contain attributes 'noinline' and 'optnone'.
struct A {
// Definition of an optnone static method.
__attribute__((optnone))
static int static_optnone_method(int a) {
return a + a;
}
// CHECK: @_ZN1A21static_optnone_methodEi({{.*}}) [[OPTNONE:#[0-9]+]]
// Definition of an optnone normal method.
__attribute__((optnone))
int optnone_method(int a) {
return a + a + a + a;
}
// CHECK: @_ZN1A14optnone_methodEi({{.*}}) [[OPTNONE]]
// Declaration of an optnone method with out-of-line definition
// that doesn't say optnone.
__attribute__((optnone))
int optnone_decl_method(int a);
// Methods declared without attribute optnone; the definitions will
// have attribute optnone, and we verify optnone wins.
__forceinline static int static_forceinline_method(int a);
__attribute__((always_inline)) int alwaysinline_method(int a);
__attribute__((noinline)) int noinline_method(int a);
__attribute__((minsize)) int minsize_method(int a);
};
void foo() {
A a;
A::static_optnone_method(4);
a.optnone_method(14);
a.optnone_decl_method(12);
A::static_forceinline_method(5);
a.alwaysinline_method(5);
a.noinline_method(6);
a.minsize_method(7);
}
// No attribute here, should still be on the definition.
int A::optnone_decl_method(int a) {
return a;
}
// CHECK: @_ZN1A19optnone_decl_methodEi({{.*}}) [[OPTNONE]]
// optnone implies noinline; therefore attribute noinline is added to
// the set of function attributes.
// forceinline is instead translated as 'always_inline'.
// However 'noinline' wins over 'always_inline' and therefore
// the resulting attributes for this method are: noinline + optnone
__attribute__((optnone))
int A::static_forceinline_method(int a) {
return a + a + a + a;
}
// CHECK: @_ZN1A25static_forceinline_methodEi({{.*}}) [[OPTNONE]]
__attribute__((optnone))
int A::alwaysinline_method(int a) {
return a + a + a + a;
}
// CHECK: @_ZN1A19alwaysinline_methodEi({{.*}}) [[OPTNONE]]
// 'noinline' + 'noinline and optnone' = 'noinline and optnone'
__attribute__((optnone))
int A::noinline_method(int a) {
return a + a + a + a;
}
// CHECK: @_ZN1A15noinline_methodEi({{.*}}) [[OPTNONE]]
// 'optnone' wins over 'minsize'
__attribute__((optnone))
int A::minsize_method(int a) {
return a + a + a + a;
}
// CHECK: @_ZN1A14minsize_methodEi({{.*}}) [[OPTNONE]]
// Test attribute 'optnone' on methods:
// -- pure virtual functions
// -- base virtual and derived virtual
// -- base virtual but not derived virtual
// -- optnone methods redefined in override
// A method defined in override doesn't inherit the function attributes of the
// superclass method.
struct B {
virtual int pure_virtual(int a) = 0;
__attribute__((optnone))
virtual int pure_virtual_with_optnone(int a) = 0;
virtual int base(int a) {
return a + a + a + a;
}
__attribute__((optnone))
virtual int optnone_base(int a) {
return a + a + a + a;
}
__attribute__((optnone))
virtual int only_base_virtual(int a) {
return a + a;
}
};
struct C : public B {
__attribute__((optnone))
virtual int pure_virtual(int a) {
return a + a + a + a;
}
virtual int pure_virtual_with_optnone(int a) {
return a + a + a + a;
}
__attribute__((optnone))
virtual int base(int a) {
return a + a;
}
virtual int optnone_base(int a) {
return a + a;
}
int only_base_virtual(int a) {
return a + a + a + a;
}
};
int bar() {
C c;
int result;
result = c.pure_virtual(3);
result += c.pure_virtual_with_optnone(2);
result += c.base(5);
result += c.optnone_base(7);
result += c.only_base_virtual(9);
return result;
}
// CHECK: @_ZN1C12pure_virtualEi({{.*}}) {{.*}} [[OPTNONE]]
// CHECK: @_ZN1C25pure_virtual_with_optnoneEi({{.*}}) {{.*}} [[NORMAL:#[0-9]+]]
// CHECK: @_ZN1C4baseEi({{.*}}) {{.*}} [[OPTNONE]]
// CHECK: @_ZN1C12optnone_baseEi({{.*}}) {{.*}} [[NORMAL]]
// CHECK: @_ZN1C17only_base_virtualEi({{.*}}) {{.*}} [[NORMAL]]
// CHECK: @_ZN1B4baseEi({{.*}}) {{.*}} [[NORMAL]]
// CHECK: @_ZN1B12optnone_baseEi({{.*}}) {{.*}} [[OPTNONE]]
// CHECK: @_ZN1B17only_base_virtualEi({{.*}}) {{.*}} [[OPTNONE]]
// CHECK: attributes [[NORMAL]] =
// CHECK-NOT: noinline
// CHECK-NOT: optnone
// CHECK: attributes [[OPTNONE]] = {{.*}} noinline {{.*}} optnone
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