llvm-project/clang/test/CodeGenCXX/pr24097.cpp

// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -fvisibility hidden -emit-llvm -O1 -disable-llvm-passes -o - | FileCheck %s

struct Filter {
  virtual void Foo();
};
struct Sender {
  virtual bool Send();
};
struct SyncMessageFilter : public Filter, public Sender {
  bool Send();
};
struct TestSyncMessageFilter : public SyncMessageFilter {
};
void bar() {
  TestSyncMessageFilter f;
  f.Send();
}

// Test that it is not hidden
// CHECK: define available_externally zeroext i1 @_ZThn8_N17SyncMessageFilter4SendEv
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 %s -triple=x86_64-pc-linux -fvisibility hidden -emit-llvm -O1 -disable-llvm-passes -o - \| FileCheck %s`
Set the linkage before setting the visibility. Otherwise the visibility setting code would not know that a given function was available_externally. Fixes PR24097. llvm-svn: 242012 2015-07-13 14:07:58 +08:00
			`struct Filter {`
			`virtual void Foo();`
			`};`
			`struct Sender {`
			`virtual bool Send();`
			`};`
			`struct SyncMessageFilter : public Filter, public Sender {`
			`bool Send();`
			`};`
			`struct TestSyncMessageFilter : public SyncMessageFilter {`
			`};`
			`void bar() {`
			`TestSyncMessageFilter f;`
			`f.Send();`
			`}`

			`// Test that it is not hidden`
			`// CHECK: define available_externally zeroext i1 @_ZThn8_N17SyncMessageFilter4SendEv`