lhutton1 commented on PR #16425:
URL: https://github.com/apache/tvm/pull/16425#issuecomment-2019958120
Here is a reproducer:
mem_leak.cpp
```c++
#include "tvm/runtime/registry.h"
#include "tvm/target/target.h"
int main() {
auto pf = tvm::runtime::Registry::Get("target.llvm_get_cpu_archlist");
(*pf)(tvm::Target("llvm"));
}
```
Compile:
```bash
g++ -std=c++17 -O2 -fPIC -I{TVM_DIR}/include
-I{TVM_DIR}/3rdparty/dmlc-core/include -I{TVM_DIR}/tvm/3rdparty/dlpack/include
-DDMLC_USE_LOGGING_LIBRARY=\<tvm/runtime/logging.h\> -o mem_leak_exec
mem_leak.cpp -L{TVM_BUILD_DIR} -ldl -ltvm -pthread
```
Run with valgrind:
```bash
LD_PRELOAD="{TVM_BUILD_DIR}/libtvm.so" valgrind --leak-check=full -v
--track-origins=yes ./mem_leak_exec
```
Output:
```
...
==475237== 12,369 (1,560 direct, 10,809 indirect) bytes in 1 blocks are
definitely lost in loss record 42,596 of 42,630
==475237== at 0x4849013: operator new(unsigned long) (in
/usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==475237== by 0x12244479: ??? (in
/usr/lib/x86_64-linux-gnu/libLLVM-17.so.1)
==475237== by 0xBC0131B:
llvm::Target::createTargetMachine(llvm::StringRef, llvm::StringRef,
llvm::StringRef, llvm::TargetOptions const&, std::optional<llvm::Reloc::Model>,
std::optional<llvm::CodeModel::Model>, llvm::CodeGenOpt::Level, bool) const
(TargetRegistry.h:488)
==475237== by 0xBBFBC05:
tvm::codegen::CreateLLVMTargetMachine(llvm::Target const*,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&, std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, llvm::TargetOptions
const&, llvm::Reloc::Model const&, llvm::CodeModel::Model const&,
llvm::CodeGenOpt::Level const&) (llvm_instance.cc:393)
==475237== by 0xBBFBD8A:
tvm::codegen::GetLLVMSubtargetInfo(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&, std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> > const&) (llvm_instance.cc:408)
==475237== by 0xBBFEAE1:
tvm::codegen::LLVMTargetInfo::GetAllLLVMTargetArches() const
(llvm_instance.cc:835)
==475237== by 0xBBFA2BB:
tvm::codegen::LLVMTargetInfo::LLVMTargetInfo(tvm::codegen::LLVMInstance&,
tvm::Target const&) (llvm_instance.cc:218)
==475237== by 0xBC0EE16: tvm::codegen::__mk_TVM8::{lambda(tvm::Target
const&)#1}::operator()(tvm::Target const) const (llvm_module.cc:695)
==475237== by 0xBC188B0:
tvm::runtime::TypedPackedFunc<tvm::runtime::Array<tvm::runtime::String, void>
(tvm::Target
const&)>::AssignTypedLambda<tvm::codegen::__mk_TVM8::{lambda(tvm::Target
const&)#1}>(tvm::codegen::__mk_TVM8::{lambda(tvm::Target const&)#1},
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>)::{lambda(tvm::runtime::TVMArgs const&,
tvm::runtime::TVMRetValue*)#1}::operator()(tvm::runtime::TVMArgs const,
tvm::runtime::TVMRetValue) const (packed_func.h:1826)
==475237== by 0xBC233EE:
tvm::runtime::PackedFuncObj::Extractor<tvm::runtime::PackedFuncSubObj<tvm::runtime::TypedPackedFunc<tvm::runtime::Array<tvm::runtime::String,
void> (tvm::Target
const&)>::AssignTypedLambda<tvm::codegen::__mk_TVM8::{lambda(tvm::Target
const&)#1}>(tvm::codegen::__mk_TVM8::{lambda(tvm::Target const&)#1},
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>)::{lambda(tvm::runtime::TVMArgs const&, tvm::runtime::TVMRetValue*)#1}>
>::Call(tvm::runtime::PackedFuncObj const*, std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >, tvm::runtime::TVMRetValue)
(packed_func.h:1252)
==475237== by 0x1092F8: main (in
/workspaces/tvm-ethosn/src/tvm/test_mem_leak/cpp_deploy)
...
```
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