If I enable lto using cmake: -DCMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE=ON
Emscripten fails with the following error, is lto supported?
[1/17] Building CXX object util/CMakeFiles/gdxutil.dir/colormap.cpp.o
FAILED: util/CMakeFiles/gdxutil.dir/colormap.cpp.o
/Users/dirk/Projects/emsdk/emscripten/incoming/em++ -DSPDLOG_FMT_EXTERNAL
-I../../util -I../../util/include -I. -isystem
../local-toolchain-wasm/include -isystem
../local-toolchain-wasm/include/eigen3 -Wall -Wextra -Wpedantic
-Wfatal-errors -Wno-unknown-pragmas -fdiagnostics-color -stdlib=libc++
-DNDEBUG -O2 -flto=thin -fPIC -fvisibility=hidden -std=c++1z -MD -MT
util/CMakeFiles/gdxutil.dir/colormap.cpp.o -MF
util/CMakeFiles/gdxutil.dir/colormap.cpp.o.d -o
util/CMakeFiles/gdxutil.dir/colormap.cpp.o -c ../../util/colormap.cpp
Pass 'Module Summary Analysis' is not initialized.
Verify if there is a pass dependency cycle.
Required Passes:
Error: Required pass not found! Possible causes:
- Pass misconfiguration (e.g.: missing macros)
- Corruption of the global PassRegistry
Assertion failed: (PI && "Expected required passes to be initialized"),
function schedulePass, file
/Users/dirk/Projects/emsdk/clang/fastcomp/src/lib/IR/LegacyPassManager.cpp,
line 647.
0 clang-4.0 0x0000000104822ae8
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1 clang-4.0 0x0000000104821ca6
llvm::sys::RunSignalHandlers() + 86
2 clang-4.0 0x0000000104823139 SignalHandler(int) + 361
3 libsystem_platform.dylib 0x00007fffcdfc2b3a _sigtramp + 26
4 libsystem_malloc.dylib 0x00007fffcdf3691f tiny_malloc_from_free_list +
431
5 libsystem_c.dylib 0x00007fffcde47420 abort + 129
6 libsystem_c.dylib 0x00007fffcde0e893 basename_r + 0
7 clang-4.0 0x0000000104335e02
llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 2082
8 clang-4.0 0x0000000104335718
llvm::PMTopLevelManager::schedulePass(llvm::Pass*) + 312
9 clang-4.0 0x0000000104a0a5bf
clang::EmitBackendOutput(clang::DiagnosticsEngine&,
clang::HeaderSearchOptions const&, clang::CodeGenOptions const&,
clang::TargetOptions const&, clang::LangOptions const&, llvm::DataLayout
const&, llvm::Module*, clang::BackendAction,
std::__1::unique_ptr<llvm::raw_pwrite_stream,
std::__1::default_delete<llvm::raw_pwrite_stream> >) + 11503
10 clang-4.0 0x0000000104bebe70
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 1056
11 clang-4.0 0x00000001054d53c2
clang::ParseAST(clang::Sema&, bool, bool) + 466
12 clang-4.0 0x0000000104e2365c
clang::FrontendAction::Execute() + 76
13 clang-4.0 0x0000000104de4bb1
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 1201
14 clang-4.0 0x0000000104e7a481
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 4865
15 clang-4.0 0x0000000103bb93b3 cc1_main(llvm::ArrayRef<char
const*>, char const*, void*) + 1235
16 clang-4.0 0x0000000103bb7a49 main + 10297
17 libdyld.dylib 0x00007fffcddb3235 start + 1
18 libdyld.dylib 0x0000000000000062 start + 841272878
Stack dump:
0. Program arguments:
/Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin/clang-4.0
-cc1 -triple asmjs-unknown-emscripten -emit-llvm-bc -flto=thin
-disable-free -main-file-name colormap.cpp -mrelocation-model pic
-pic-level 2 -mthread-model posix -mdisable-fp-elim -no-integrated-as
-mconstructor-aliases -target-linker-version 278.4 -dwarf-column-info
-debugger-tuning=gdb -coverage-notes-file
/Users/dirk/Projects/gdx-core/build/gdx-wasm/util/CMakeFiles/gdxutil.dir/colormap.cpp.gcno
-nostdsysteminc -nobuiltininc -resource-dir
/Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin/../lib/clang/4.0.0
-dependency-file util/CMakeFiles/gdxutil.dir/colormap.cpp.o.d
-sys-header-deps -MT util/CMakeFiles/gdxutil.dir/colormap.cpp.o -isystem
../local-toolchain-wasm/include -isystem
../local-toolchain-wasm/include/eigen3 -D __EMSCRIPTEN_major__=1 -D
__EMSCRIPTEN_minor__=37 -D __EMSCRIPTEN_tiny__=16 -D _LIBCPP_ABI_VERSION=2
-D SPDLOG_FMT_EXTERNAL -I ../../util -I ../../util/include -I . -D NDEBUG
-stdlib=libc++ -O2 -Werror=implicit-function-declaration -Wall -Wextra
-Wpedantic -Wfatal-errors -Wno-unknown-pragmas -std=c++1z
-fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir
/Users/dirk/Projects/gdx-core/build/gdx-wasm -ferror-limit 19
-fmessage-length 0 -fvisibility hidden -fobjc-runtime=gnustep
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics
-vectorize-loops -vectorize-slp -nobuiltininc -nostdsysteminc
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/libcxx
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/lib/libcxxabi/include
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/compat
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/SSE
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/libc
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/lib/libc/musl/arch/emscripten
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/local/include
-isystem/Users/dirk/Projects/emsdk/emscripten/incoming/system/include/SDL
-disable-llvm-optzns -o util/CMakeFiles/gdxutil.dir/colormap.cpp.o -x c++
../../util/colormap.cpp
1. <eof> parser at end of file
clang-4.0: fatal error: unable to execute command: Abort trap: 6
clang version 4.0.0
(https://github.com/kripken/emscripten-fastcomp-clang.git
feff46c2a99f012dfdd291f02636fd386d132969)
(https://github.com/kripken/emscripten-fastcomp.git
d11ecd94546630d1e087de93ac95eccb2630b5e3) (emscripten 1.37.16 : 1.37.16)
Target: asmjs-unknown-emscripten
Thread model: posix
InstalledDir:
/Users/dirk/Projects/emsdk/clang/fastcomp/build_incoming_64/bin
ERROR:root:compiler frontend failed to generate LLVM bitcode, halting
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