93786da2cb
Much to my surprise, '-disable-llvm-optzns' which I thought was the magical flag I wanted to get at the raw LLVM IR coming out of Clang deosn't do that. It still runs some passes over the IR. I don't want that, I really want the *raw* IR coming out of Clang and I strongly suspect everyone else using it is in the same camp. There is actually a flag that does what I want that I didn't know about called '-disable-llvm-passes'. I suspect many others don't know about it either. It both does what I want and is much simpler. This removes the confusing version and makes that spelling of the flag an alias for '-disable-llvm-passes'. I've also moved everything in Clang to use the 'passes' spelling as it seems both more accurate (*all* LLVM passes are disabled, not just optimizations) and much easier to remember and spell correctly. This is part of simplifying how Clang drives LLVM to make it cleaner to wire up to the new pass manager. Differential Revision: https://reviews.llvm.org/D28047 llvm-svn: 290392
216 lines
6.4 KiB
C++
216 lines
6.4 KiB
C++
// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -o %t
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// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -std=c++03 -o %t.03
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// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -std=c++11 -o %t.11
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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -disable-llvm-passes -O3 -emit-llvm -o %t.opt
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// RUN: FileCheck %s < %t
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// RUN: FileCheck %s < %t.03
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// RUN: FileCheck %s < %t.11
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// RUN: FileCheck --check-prefix=CHECK-OPT %s < %t.opt
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namespace {
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struct A {
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virtual void f() { }
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};
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}
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void f() { A b; }
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struct B {
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B();
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virtual void f();
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};
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B::B() { }
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struct C : virtual B {
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C();
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virtual void f() { }
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};
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C::C() { }
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struct D {
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virtual void f();
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};
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void D::f() { }
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static struct : D { } e;
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// Force 'e' to be constructed and therefore have a vtable defined.
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void use_e() {
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e.f();
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}
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// The destructor is the key function.
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template<typename T>
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struct E {
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virtual ~E();
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};
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template<typename T> E<T>::~E() { }
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// Anchor is the key function
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template<>
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struct E<char> {
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virtual void anchor();
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};
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void E<char>::anchor() { }
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template struct E<short>;
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extern template struct E<int>;
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void use_E() {
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E<int> ei;
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(void)ei;
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E<long> el;
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(void)el;
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}
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// No key function
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template<typename T>
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struct F {
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virtual void foo() { }
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};
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// No key function
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template<>
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struct F<char> {
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virtual void foo() { }
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};
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template struct F<short>;
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extern template struct F<int>;
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void use_F() {
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F<char> fc;
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fc.foo();
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F<int> fi;
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fi.foo();
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F<long> fl;
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(void)fl;
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}
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// B has a key function that is not defined in this translation unit so its vtable
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// has external linkage.
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// CHECK-DAG: @_ZTV1B = external unnamed_addr constant
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// C has no key function, so its vtable should have weak_odr linkage
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// and hidden visibility (rdar://problem/7523229).
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// CHECK-DAG: @_ZTV1C = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1C = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1C = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTT1C = linkonce_odr unnamed_addr constant {{.*}}, comdat{{$}}
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// D has a key function that is defined in this translation unit so its vtable is
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// defined in the translation unit.
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// CHECK-DAG: @_ZTV1D = unnamed_addr constant
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// CHECK-DAG: @_ZTS1D = constant
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// CHECK-DAG: @_ZTI1D = constant
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// E<char> is an explicit specialization with a key function defined
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// in this translation unit, so its vtable should have external
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// linkage.
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// CHECK-DAG: @_ZTV1EIcE = unnamed_addr constant
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// CHECK-DAG: @_ZTS1EIcE = constant
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// CHECK-DAG: @_ZTI1EIcE = constant
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// E<short> is an explicit template instantiation with a key function
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// defined in this translation unit, so its vtable should have
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// weak_odr linkage.
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// CHECK-DAG: @_ZTV1EIsE = weak_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1EIsE = weak_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1EIsE = weak_odr constant {{.*}}, comdat{{$}}
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// F<short> is an explicit template instantiation without a key
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// function, so its vtable should have weak_odr linkage
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// CHECK-DAG: @_ZTV1FIsE = weak_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIsE = weak_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1FIsE = weak_odr constant {{.*}}, comdat{{$}}
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// E<long> is an implicit template instantiation with a key function
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// defined in this translation unit, so its vtable should have
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// linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1EIlE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1EIlE = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1EIlE = linkonce_odr constant {{.*}}, comdat{{$}}
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// F<long> is an implicit template instantiation with no key function,
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// so its vtable should have linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1FIlE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIlE = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1FIlE = linkonce_odr constant {{.*}}, comdat{{$}}
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// F<int> is an explicit template instantiation declaration without a
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// key function, so its vtable should have external linkage.
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// CHECK-DAG: @_ZTV1FIiE = external unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTV1FIiE = external unnamed_addr constant
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// E<int> is an explicit template instantiation declaration. It has a
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// key function is not instantiated, so we know that vtable definition
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// will be generated in TU where key function will be defined
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// so we can mark it as available_externally (only with optimizations)
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// CHECK-DAG: @_ZTV1EIiE = external unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTV1EIiE = available_externally unnamed_addr constant
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// The anonymous struct for e has no linkage, so the vtable should have
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// internal linkage.
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// CHECK-DAG: @"_ZTV3$_0" = internal unnamed_addr constant
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// CHECK-DAG: @"_ZTS3$_0" = internal constant
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// CHECK-DAG: @"_ZTI3$_0" = internal constant
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// The A vtable should have internal linkage since it is inside an anonymous
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// namespace.
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// CHECK-DAG: @_ZTVN12_GLOBAL__N_11AE = internal unnamed_addr constant
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// CHECK-DAG: @_ZTSN12_GLOBAL__N_11AE = internal constant
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// CHECK-DAG: @_ZTIN12_GLOBAL__N_11AE = internal constant
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// F<char> is an explicit specialization without a key function, so
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// its vtable should have linkonce_odr linkage.
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// CHECK-DAG: @_ZTV1FIcE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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// CHECK-DAG: @_ZTS1FIcE = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTI1FIcE = linkonce_odr constant {{.*}}, comdat{{$}}
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// CHECK-DAG: @_ZTV1GIiE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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template <typename T>
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class G {
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public:
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G() {}
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virtual void f0();
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virtual void f1();
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};
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template <>
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void G<int>::f1() {}
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template <typename T>
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void G<T>::f0() {}
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void G_f0() { new G<int>(); }
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// H<int> has a key function without a body but it's a template instantiation
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// so its VTable must be emitted.
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// CHECK-DAG: @_ZTV1HIiE = linkonce_odr unnamed_addr constant {{.*}}, comdat,
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template <typename T>
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class H {
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public:
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virtual ~H();
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};
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void use_H() {
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H<int> h;
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}
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// I<int> has an explicit instantiation declaration and needs a VTT and
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// construction vtables.
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// CHECK-DAG: @_ZTV1IIiE = external unnamed_addr constant
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// CHECK-DAG: @_ZTT1IIiE = external unnamed_addr constant
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// CHECK-NOT: @_ZTC1IIiE
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//
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// CHECK-OPT-DAG: @_ZTV1IIiE = available_externally unnamed_addr constant
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// CHECK-OPT-DAG: @_ZTT1IIiE = available_externally unnamed_addr constant
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struct VBase1 { virtual void f(); }; struct VBase2 : virtual VBase1 {};
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template<typename T>
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struct I : VBase2 {};
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extern template struct I<int>;
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I<int> i;
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