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Xtensa patches (Do not merge, PR created for easier review only) (LLVM-49) #12

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@igrr igrr commented Jan 24, 2020

This PR allows reviewing Xtensa patches on top of xtensa_release_9.x branch.

andreisfr and others added 22 commits January 17, 2020 15:25
@andreisfr @gerekon
[Xtensa] Recognize Xtensa in triple parsing code
0acf986
@andreisfr @gerekon
[Xtensa] Add definitions and relocs for Xtensa ELF.
e581764 
Modify ELFYAML to support Xtensa, added simple test with Xtensa object file in YAML format.
@andreisfr
[Xtensa] Add initial version of the Xtensa backend.
4e8c960
@andreisfr
[Xtensa] Add basic *td files with Xtensa architecture description, li…
dc19915 
…ke Xtensa.td,

XtensaInstrInfo.td etc. Currently add just part of Core Instructions like ALU,

processor control, memory barrier and some move instructions. Add

instructions formats and basic registers.
@andreisfr
[Xtensa] Add Xtensa MCTargetDescr initial functionality.
cdcba48 
Add FDE CFI encoding for Xtensa.
@andreisfr
[Xtensa] Add Xtensa basic assembler parser.
adcda12
@andreisfr
[Xtensa] Add basic Xtensa instruction printer. Add basic tests of the…
b468b81 
… Xtensa instructions.
@andreisfr
[Xtensa] Add descriptions of the Xtensa shift/load/store instructions.
497fe4e 
Modify tests to support new instructions.
@andreisfr
[Xtensa] Add basic support of Xtensa disassembler.
ad738ea
@andreisfr
[Xtensa] Add support of the rest part of Xtensa Core Instructions. Ad…
8d97fd9 
…d relocations

and fixups support in object files generation. Modify tests to support

new instructions. Add tests for relocations and fixups.
@andreisfr
[Xtensa] Add Xtensa target to clang
7934cf9
@andreisfr
[Xtensa] Add Xtensa target ABI support to clang
6d74874
@andreisfr
[Xtensa] Initial codegen support for simple ALU operations
0bdd3c8
@andreisfr
[Xtensa] Add Constant Pool
3539062
@andreisfr
[Xtensa] Implement assembler representation of the Constant Pool
a89dc46
@andreisfr
[Xtensa] Add support of the Xtensa function calls
0ceede6
@andreisfr
[Xtensa] Implement emitPrologue/emitEpilogue
0de87ba
@andreisfr
[Xtensa] Implement lowering SELECT_CC, SETCC
67730fb
@andreisfr
[Xtensa] Add Xtensa subtarget features.
04a9081 
Add Windowed Register instructions and Code Density instructions.
@andreisfr
[Xtensa] Add FPR and BR register class
0db1910 
Add base FP and Boolean instructions
@gerekon @andreisfr
[Xtensa] Add many code improvements of Xtensa backend in single patch…
28f6b2a 
… (modify clang and llvm).

Added new instructions, object code generation, etc.
@gerekon
esp/maint: Adds Github workfows
96ef209
@github-actions github-actions bot changed the title Xtensa patches (Do not merge, PR created for easier review only) Xtensa patches (Do not merge, PR created for easier review only) (LLVM-49) Jan 24, 2020
@igrr igrr closed this Jul 30, 2020
@MabezDev MabezDev mentioned this pull request Oct 21, 2024
Closed
3 tasks
espressif-bot pushed a commit that referenced this pull request Jun 30, 2025
@tbaederr
[clang][bytecode] Classify variable initializer, not the decl (llvm#1…
36cf51d 
…46338)

I'm not attaching a test case because I wasn't able to reproduce. The
backtrace looks as follows:

```
    frame #10: 0x00007fffdedf0b0d libclang-cpp.so.21.0git`clang::interp::Context::evaluateAsInitializer(this=0x00007c6f839f62f0, Parent=0x00007bff7f3820e0, VD=0x00007bff77ce24b0, Result=0x00007bff7165cd78) at Context.cpp:123:16
    frame #11: 0x00007fffde7bcc2f libclang-cpp.so.21.0git`clang::Expr::EvaluateAsInitializer(this=0x00007bff77ce3078, Value=0x00007bff7165cd78, Ctx=0x00007e9f839f8200, VD=0x00007bff77ce24b0, Notes=0x00007bff7f0d1620, IsConstantInitialization=false) const at ExprConstant.cpp:17096:20
    frame #12: 0x00007fffdde7ca84 libclang-cpp.so.21.0git`clang::VarDecl::evaluateValueImpl(this=0x00007bff77ce24b0, Notes=0x00007bff7f0d1620, IsConstantInitialization=false) const at Decl.cpp:2607:23
    frame #13: 0x00007fffdde7a4a2 libclang-cpp.so.21.0git`clang::VarDecl::evaluateValue(this=0x00007bff77ce24b0) const at Decl.cpp:2583:10
    frame #14: 0x00007fffdde7a0d7 libclang-cpp.so.21.0git`clang::VarDecl::hasInitWithSideEffects(this=0x00007bff77ce24b0) const at Decl.cpp:2458:39
    frame #15: 0x00007fffe8c2e77b libclang-cpp.so.21.0git`clang::ASTDeclWriter::VisitVarDecl(this=0x00007bff7f381b50, D=0x00007bff77ce24b0) at ASTWriterDecl.cpp:1308:27
    frame #16: 0x00007fffe8c58bf8 libclang-cpp.so.21.0git`clang::declvisitor::Base<std::add_pointer, clang::ASTDeclWriter, void>::Visit(this=0x00007bff7f381b50, D=0x00007bff77ce24b0) at DeclNodes.inc:296:1
    frame #17: 0x00007fffe8c1ad7e libclang-cpp.so.21.0git`clang::ASTDeclWriter::Visit(this=0x00007bff7f381b50, D=0x00007bff77ce24b0) at ASTWriterDecl.cpp:460:31
    frame #18: 0x00007fffe8c4f5ae libclang-cpp.so.21.0git`clang::ASTWriter::WriteDecl(this=0x00007e0f83dd8608, Context=0x00007e9f839f8200, D=0x00007bff77ce24b0) at ASTWriterDecl.cpp:3060:5
    frame #19: 0x00007fffe8a908a7 libclang-cpp.so.21.0git`clang::ASTWriter::WriteDeclAndTypes(this=0x00007e0f83dd8608, Context=0x00007e9f839f8200) at ASTWriter.cpp:6243:9
    frame #20: 0x00007fffe8a805f5 libclang-cpp.so.21.0git`clang::ASTWriter::WriteASTCore(this=0x00007e0f83dd8608, SemaPtr=0x00007e8f83cd3200, isysroot=(Data = "", Length = 0), WritingModule=0x00007e0f83d5bc18) at ASTWriter.cpp:6083:5
    frame #21: 0x00007fffe8a7cfa2 libclang-cpp.so.21.0git`clang::ASTWriter::WriteAST(this=0x00007e0f83dd8608, Subject=PointerUnion<clang::Sema *, clang::Preprocessor *> @ 0x00007bff7f18e640, OutputFile=(Data = "/home/tbaeder/code/llvm-project/build/runtimes/runtimes-bins/libcxx/test/libcxx/clang_modules_include.gen.py/Output/complex.h.compile.pass.cpp.dir/t.tmp/1WNKSCAH8NSAM/std-PE20VSNDCJ1A.pcm", Length = 187), WritingModule=0x00007e0f83d5bc18, isysroot=(Data = "", Length = 0), ShouldCacheASTInMemory=true) at ASTWriter.cpp:5434:32
    frame #22: 0x00007fffe8cd2168 libclang-cpp.so.21.0git`clang::PCHGenerator::HandleTranslationUnit(this=0x00007e0f83dd8500, Ctx=0x00007e9f839f8200) at GeneratePCH.cpp:86:30
    frame #23: 0x00007fffe9595e11 libclang-cpp.so.21.0git`clang::MultiplexConsumer::HandleTranslationUnit(this=0x00007c5f83a00300, Ctx=0x00007e9f839f8200) at MultiplexConsumer.cpp:339:15
    frame #24: 0x00007fffdc94121d libclang-cpp.so.21.0git`clang::ParseAST(S=0x00007e8f83cd3200, PrintStats=false, SkipFunctionBodies=false) at ParseAST.cpp:183:13
    frame #25: 0x00007fffe9480085 libclang-cpp.so.21.0git`clang::ASTFrontendAction::ExecuteAction(this=0x00007bff7efb9020) at FrontendAction.cpp:1339:3
    frame #26: 0x00007fffe947e650 libclang-cpp.so.21.0git`clang::FrontendAction::Execute(this=0x00007bff7efb9020) at FrontendAction.cpp:1221:3
    frame #27: 0x00007fffe915a163 libclang-cpp.so.21.0git`clang::CompilerInstance::ExecuteAction(this=0x00007d2f839ef000, Act=0x00007bff7efb9020) at CompilerInstance.cpp:1055:33
    frame #28: 0x00007fffe9175bbf libclang-cpp.so.21.0git`clang::CompilerInstance::compileModule(clang::SourceLocation, llvm::StringRef, llvm::StringRef, clang::CompilerInstance&)::$_0::operator()(this=0x00007bff805225e0) const at CompilerInstance.cpp:1291:18
[...]
    frame #39: 0x00007fffa3ab2a35 libLLVM.so.21.0git`void* llvm::thread::ThreadProxy<std::tuple<void (*)(void*), (anonymous namespace)::RunSafelyOnThreadInfo*>>(Ptr=0x00007c1f839e4330) at thread.h:58:5
    frame #40: 0x000000000039933b clang++`asan_thread_start(void*) + 155
    frame #41: 0x00007fff84a7dfa8 libc.so.6`start_thread + 952
    frame #42: 0x00007fff84b01fcc libc.so.6`__clone3 + 44
```

where we encounter this declaration:
```
VarDecl 0x7bff790764b0 </[...]test-suite-install/include/c++/v1/__condition_variable/condition_variable.h:49:3, col:53> col:8 in std.condition_variable.condition_variable hidden referenced __result_max '_Rep' cinit `-CallExpr 0x7bff79077078 <col:23, col:53> 'type':'long long'
  `-ImplicitCastExpr 0x7bff79077058 <col:23, col:49> 'type (*)() noexcept' <FunctionToPointerDecay>
    `-DeclRefExpr 0x7bff79076670 <col:23, col:49> 'type () noexcept' lvalue CXXMethod 0x7bff791df1f8 'max' 'type () noexcept'
      `-NestedNameSpecifier TypeSpec 'numeric_limits<__ns_rep>':'std::numeric_limits<long long>'
```

which looks fine at first, but the declaration type does not:
```
TemplateTypeParmType 0x7bff79074dd0 '_Rep' dependent depth 0 index 0 `-TemplateTypeParm 0x7bff79074d70 '_Rep'
```
we cannot classify this, so we later run into an assertion because we
assume `PT_Ptr` while the value on the stack is of type `classify(long
long)`.

Work around this by only looking at the initializer type in that case.

For the record, the command line that crashed could be extracted from
`ninja check-cxx` and was:

```
/home/tbaeder/code/llvm-project/build/bin/clang++ /home/tbaeder/code/llvm-project/build/runtimes/runtimes-bins/libcxx/test/libcxx/clang_modules_include.gen.py/complex.h.compile.pass.cpp -pthread --target=x86_64-redhat-linux -nostdinc++ -I /home/tbaeder/code/llvm-project/build/runtimes/runtimes-bins/libcxx/test-suite-install/include/x86_64-redhat-linux/c++/v1 -I /home/tbaeder/code/llvm-project/build/runtimes/runtimes-bins/libcxx/test-suite-install/include/c++/v1 -I /home/tbaeder/code/llvm-project/libcxx/test/support -std=c++26 -Werror -Wall -Wctad-maybe-unsupported -Wextra -Wshadow -Wundef -Wunused-template -Wno-unused-command-line-argument -Wno-attributes -Wno-pessimizing-move -Wno-noexcept-type -Wno-atomic-alignment -Wno-reserved-module-identifier -Wdeprecated-copy -Wdeprecated-copy-dtor -Wshift-negative-value -Wno-user-defined-literals -Wno-tautological-compare -Wsign-compare -Wunused-variable -Wunused-parameter
 -Wunreachable-code -Wno-unused-local-typedef -Wno-local-type-template-args -Wno-c++11-extensions -Wno-unknown-pragmas -Wno-pass-failed -Wno-mismatched-new-delete -Wno-redundant-move -Wno-self-move -Wno-nullability-completeness -D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -D_LIBCPP_ENABLE_EXPERIMENTAL -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -Werror=thread-safety -Wuser-defined-warnings -fmodules -fcxx-modules -fmodules-cache-path=/home/tbaeder/code/llvm-project/build/runtimes/runtimes-bins/libcxx/test/libcxx/clang_modules_include.gen.py/Output/complex.h.compile.pass.cpp.dir/t.tmp -fsyntax-only
```
espressif-bot pushed a commit that referenced this pull request Aug 14, 2025
@sahas3
[mlir][tosa] Don't fold mul with zero lhs/rhs if resulting type is dy…
8432f24 
…namic (llvm#153420)

Canonicalizing the following IR:

```
func.func @mul_zero_dynamic_nofold(%arg0: tensor<?x17xf32>) -> tensor<?x17xf32> {
  %0 = "tosa.const"() <{values = dense<0.000000e+00> : tensor<1x1xf32>}> : () -> tensor<1x1xf32>
  %1 = "tosa.const"() <{values = dense<0> : tensor<1xi8>}> : () -> tensor<1xi8>
  %2 = tosa.mul %arg0, %0, %1 : (tensor<?x17xf32>, tensor<1x1xf32>, tensor<1xi8>) -> tensor<?x17xf32>
  return %2 : tensor<?x17xf32>
}
```

resulted in a crash

```
#0 0x000056513187e8db backtrace (./build-release/bin/mlir-opt+0x9d698db)                                                                                                                                                                                                                                                                                                                   
 #1 0x0000565131b17737 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/llvm/lib/Support/Unix/Signals.inc:838:8                                                                                                                                                                                                                
 #2 0x0000565131b187f3 PrintStackTraceSignalHandler(void*) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/llvm/lib/Support/Unix/Signals.inc:918:1                                                                                                                                                                                                                                
 #3 0x0000565131b18c30 llvm::sys::RunSignalHandlers() /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/llvm/lib/Support/Signals.cpp:105:18                                                                                                                                                                                                                                         
 #4 0x0000565131b18c30 SignalHandler(int, siginfo_t*, void*) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/llvm/lib/Support/Unix/Signals.inc:409:3                                                                                                                                                                                                                              
 #5 0x00007f2e4165b050 (/lib/x86_64-linux-gnu/libc.so.6+0x3c050)                                                                                                                                                                                                                                                                                                                            
 #6 0x00007f2e416a9eec __pthread_kill_implementation ./nptl/pthread_kill.c:44:76                                                                                                                                                                                                                                                                                                            
 #7 0x00007f2e4165afb2 raise ./signal/../sysdeps/posix/raise.c:27:6                                                                                                                                                                                                                                                                                                                         
 #8 0x00007f2e41645472 abort ./stdlib/abort.c:81:7                                                                                                                                                                                                                                                                                                                                          
 #9 0x00007f2e41645395 _nl_load_domain ./intl/loadmsgcat.c:1177:9                                                                                                                                                                                                                                                                                                                           
#10 0x00007f2e41653ec2 (/lib/x86_64-linux-gnu/libc.so.6+0x34ec2)                                                                                                                                                                                                                                                                                                                            
#11 0x00005651443ec4ba mlir::DenseIntOrFPElementsAttr::getRaw(mlir::ShapedType, llvm::ArrayRef<char>) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/mlir/lib/IR/BuiltinAttributes.cpp:1361:3                                                                                                                                                                                    
#12 0x00005651443f1209 mlir::DenseElementsAttr::resizeSplat(mlir::ShapedType) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/mlir/lib/IR/BuiltinAttributes.cpp:0:10                                                                                                                                                                                                              
#13 0x000056513f76f2b6 mlir::tosa::MulOp::fold(mlir::tosa::MulOpGenericAdaptor<llvm::ArrayRef<mlir::Attribute>>) /local-ssd/sayans/Softwares/llvm-repo/llvm-project-latest/mlir/lib/Dialect/Tosa/IR/TosaCanonicalizations.cpp:0:0
```

from the folder for `tosa::mul` since the zero value was being reshaped
to `?x17` size which isn't supported. AFAIK, `tosa.const` requires all
dimensions to be static. So in this case, the fix is to not to fold the
op.
espressif-bot pushed a commit that referenced this pull request Sep 3, 2025
@thurstond
Revert "[MLIR][XeGPU] Scattered ops sg-to-wi distribution" (llvm#156761)
c1cc9d2 
Reverts llvm#154949 due to suspected buildbot breakage
(https://lab.llvm.org/buildbot/#/builders/55/builds/16630/steps/11/logs/stdio).
Previously commented on the original pull request:
llvm#154949 (comment)

```
******************** TEST 'MLIR :: Dialect/XeGPU/subgroup-distribute.mlir' FAILED ********************
...
# | PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
# | Stack dump:
# | 0.	Program arguments: /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm_build_hwasan/bin/mlir-opt -xegpu-subgroup-distribute -allow-unregistered-dialect -canonicalize -cse -split-input-file /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/test/Dialect/XeGPU/subgroup-distribute.mlir
# |  #0 0x0000c0af4b066df0 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:834:13
# |  #1 0x0000c0af4b060e20 llvm::sys::RunSignalHandlers() /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/lib/Support/Signals.cpp:105:18
# |  #2 0x0000c0af4b0691b4 SignalHandler(int, siginfo_t*, void*) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm/lib/Support/Unix/Signals.inc:426:38
# |  #3 0x0000ee25a3dcb8f8 (linux-vdso.so.1+0x8f8)
# |  #4 0x0000ee25a36c7608 (/lib/aarch64-linux-gnu/libc.so.6+0x87608)
# |  #5 0x0000ee25a367cb3c raise (/lib/aarch64-linux-gnu/libc.so.6+0x3cb3c)
# |  #6 0x0000ee25a3667e00 abort (/lib/aarch64-linux-gnu/libc.so.6+0x27e00)
# |  #7 0x0000c0af4ae7e4b0 __sanitizer::Atexit(void (*)()) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp:168:10
# |  #8 0x0000c0af4ae7c354 __sanitizer::Die() /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_termination.cpp:52:5
# |  #9 0x0000c0af4ae66a30 Unlock /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/../sanitizer_common/sanitizer_mutex.h:250:16
# | #10 0x0000c0af4ae66a30 ~GenericScopedLock /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/../sanitizer_common/sanitizer_mutex.h:386:51
# | #11 0x0000c0af4ae66a30 __hwasan::ScopedReport::~ScopedReport() /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/hwasan_report.cpp:54:5
# | #12 0x0000c0af4ae661b8 __hwasan::(anonymous namespace)::BaseReport::~BaseReport() /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/hwasan_report.cpp:477:7
# | #13 0x0000c0af4ae63f5c __hwasan::ReportTagMismatch(__sanitizer::StackTrace*, unsigned long, unsigned long, bool, bool, unsigned long*) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/hwasan_report.cpp:1094:1
# | #14 0x0000c0af4ae4f8e0 Destroy /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/../sanitizer_common/sanitizer_common.h:532:31
# | #15 0x0000c0af4ae4f8e0 ~InternalMmapVector /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/../sanitizer_common/sanitizer_common.h:642:56
# | #16 0x0000c0af4ae4f8e0 __hwasan::HandleTagMismatch(__hwasan::AccessInfo, unsigned long, unsigned long, void*, unsigned long*) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/hwasan.cpp:245:1
# | #17 0x0000c0af4ae51e8c __hwasan_tag_mismatch4 /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/hwasan/hwasan.cpp:764:1
# | #18 0x0000c0af4ae67b30 __interception::InterceptFunction(char const*, unsigned long*, unsigned long, unsigned long) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/compiler-rt/lib/interception/interception_linux.cpp:60:0
# | #19 0x0000c0af5641cd24 getNumResults /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/Operation.h:404:37
# | #20 0x0000c0af5641cd24 getOpResultImpl /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/Operation.h:1010:5
# | #21 0x0000c0af5641cd24 getResult /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/Operation.h:407:54
# | #22 0x0000c0af5641cd24 mlir::OpTrait::detail::MultiResultTraitBase<mlir::gpu::WarpExecuteOnLane0Op, mlir::OpTrait::VariadicResults>::getResult(unsigned int) /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/OpDefinition.h:638:62
# | #23 0x0000c0af56426b60 getType /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/Value.h:63:33
# | #24 0x0000c0af56426b60 getType /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/include/mlir/IR/Value.h:105:39
# | #25 0x0000c0af56426b60 (anonymous namespace)::LoadDistribution::matchAndRewrite(mlir::gpu::WarpExecuteOnLane0Op, mlir::PatternRewriter&) const /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/mlir/lib/Dialect/XeGPU/Transforms/XeGPUSubgroupDistribute.cpp:991:55
...
```
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4 participants
@igrr @andreisfr @gerekon @antmak