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Emscripten: An LLVM-to-WebAssembly Compiler
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WASM_OBJECT_FILES=1 deprecated? #13742

Open juj opened 3 years ago

juj commented 3 years ago

I am doing whole program analysis in a LLVM pass, which needs the whole program to run through a pass on a single final .bc file. I was using -s WASM_OBJECT_FILES=0 for that feature, but now it looks like #10643 has deprecated that mode.

My understanding is that the wasm object files do not allow a LLVM analysis tool pass to be run on the high level bitcode format anymore, before it's been lowered to wasm? I am not sure how to proceed without WASM_OBJECT_FILES=1 support anymore. Is there a specific reason that the .bc flow needs to go away?

sbc100 commented 3 years ago

The way to do LTO is to use the normal llvm flag for enabling bitcode object files which is -flto.

sbc100 commented 3 years ago

https://emscripten.org/docs/optimizing/Optimizing-Code.html#lto

stale[bot] commented 2 years ago

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