llvm-project/clang/test/CodeGenCXX/attr-disable-tail-calls.cpp

36 lines
1.4 KiB
C++

// RUN: %clang_cc1 -triple=x86_64-apple-darwin -std=c++11 -emit-llvm -o - %s | FileCheck %s
class B {
public:
[[clang::disable_tail_calls]] virtual int m1() { return 1; }
virtual int m2() { return 2; }
int m3() { return 3; }
[[clang::disable_tail_calls]] int m4();
};
class D : public B {
public:
int m1() override { return 11; }
[[clang::disable_tail_calls]] int m2() override { return 22; }
};
int foo1() {
B *b = new B;
D *d = new D;
int t = 0;
t += b->m1() + b->m2() + b->m3() + b->m4();
t += d->m1() + d->m2();
return t;
}
// CHECK: define linkonce_odr i32 @_ZN1B2m3Ev(%class.B* {{[^,]*}} %this) [[ATTRFALSE:#[0-9]+]]
// CHECK: declare i32 @_ZN1B2m4Ev(%class.B* {{[^,]*}}) [[ATTRTRUE0:#[0-9]+]]
// CHECK: define linkonce_odr i32 @_ZN1B2m1Ev(%class.B* {{[^,]*}} %this) unnamed_addr [[ATTRTRUE1:#[0-9]+]]
// CHECK: define linkonce_odr i32 @_ZN1B2m2Ev(%class.B* {{[^,]*}} %this) unnamed_addr [[ATTRFALSE:#[0-9]+]]
// CHECK: define linkonce_odr i32 @_ZN1D2m1Ev(%class.D* {{[^,]*}} %this) unnamed_addr [[ATTRFALSE:#[0-9]+]]
// CHECK: define linkonce_odr i32 @_ZN1D2m2Ev(%class.D* {{[^,]*}} %this) unnamed_addr [[ATTRTRUE1:#[0-9]+]]
// CHECK: attributes [[ATTRFALSE]] = { {{.*}}"disable-tail-calls"="false"{{.*}} }
// CHECK: attributes [[ATTRTRUE0]] = { {{.*}}"disable-tail-calls"="true"{{.*}} }
// CHECK: attributes [[ATTRTRUE1]] = { {{.*}}"disable-tail-calls"="true"{{.*}} }