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llvm-project/clang/test/CodeGenCXX/invariant.group-for-vptrs.cpp

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Make '-disable-llvm-optzns' an alias for '-disable-llvm-passes'. 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
2016-12-23 08:23:01 +08:00
// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -emit-llvm %s -fstrict-vtable-pointers -O1 -o - -disable-llvm-passes | FileCheck %s
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
struct A {
virtual void foo();
};
struct D : A {
void foo();
};
// CHECK-LABEL: define void @_Z21testExternallyVisiblev()
void testExternallyVisible() {
A *a = new A;
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: load {{.*}} !invariant.group ![[MD:[0-9]+]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
a->foo();
D *d = new D;
// CHECK: call void @_ZN1DC1Ev(
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: load {{.*}} !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
d->foo();
A *a2 = d;
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: load {{.*}} !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
a2->foo();
}
CodeGen: New vtable group representation: struct of vtable arrays. In a future change, this representation will allow us to use the new inrange annotation on getelementptr to allow the optimizer to split vtable groups. Differential Revision: https://reviews.llvm.org/D22296 llvm-svn: 289584
2016-12-14 04:40:39 +08:00
// CHECK-LABEL: {{^}}}
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
namespace {
struct B {
virtual void bar();
};
struct C : B {
void bar();
};
}
// CHECK-LABEL: define void @_Z21testInternallyVisibleb(
void testInternallyVisible(bool p) {
B *b = new B;
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: = load {{.*}}, !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
b->bar();
// CHECK: call void @_ZN12_GLOBAL__N_11CC1Ev(
C *c = new C;
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: = load {{.*}}, !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
c->bar();
}
// Checking A::A()
// CHECK-LABEL: define linkonce_odr void @_ZN1AC2Ev(
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: store {{.*}}, !invariant.group ![[MD]]
CodeGen: New vtable group representation: struct of vtable arrays. In a future change, this representation will allow us to use the new inrange annotation on getelementptr to allow the optimizer to split vtable groups. Differential Revision: https://reviews.llvm.org/D22296 llvm-svn: 289584
2016-12-14 04:40:39 +08:00
// CHECK-LABEL: {{^}}}
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
// Checking D::D()
// CHECK-LABEL: define linkonce_odr void @_ZN1DC2Ev(
// CHECK: = call i8* @llvm.invariant.group.barrier(i8*
Emiting invariant.group.barrier for ctors bugfix Ensure that the vptr store in the most-derived constructor is not behind an invariant group barrier. Previously, the base-most vptr store would be the one behind no barrier, and that could result in the creator of the object thinking it had the base-most vtable. This bug caused clang call pure virtual functions when called from constructor body. http://reviews.llvm.org/D13373 llvm-svn: 249197
2015-10-03 06:12:40 +08:00
// CHECK: call void @_ZN1AC2Ev(%struct.A*
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: store {{.*}} !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
// Checking B::B()
// CHECK-LABEL: define internal void @_ZN12_GLOBAL__N_11BC2Ev(
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: store {{.*}}, !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
// Checking C::C()
// CHECK-LABEL: define internal void @_ZN12_GLOBAL__N_11CC2Ev(
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: store {{.*}}, !invariant.group ![[MD]]
Decorating vptr load & stores with !invariant.group Adding !invariant.group to vptr load/stores for devirtualization purposes. For more goto: http://lists.llvm.org/pipermail/cfe-dev/2015-July/044227.html http://reviews.llvm.org/D12026 llvm-svn: 247725
2015-09-16 05:46:55 +08:00
[Devirtualization] Emit invariant.group loads with empty group md Summary: As discussed here http://lists.llvm.org/pipermail/llvm-dev/2017-January/109332.html having different groups doesn't solve the problem entirly. Reviewers: rjmccall, rsmith Subscribers: amharc, cfe-commits Differential Revision: https://reviews.llvm.org/D32110 llvm-svn: 301178
2017-04-24 20:58:43 +08:00
// CHECK: ![[MD]] = !{}