wasm-ld should split up relocation function when function body size exceeds limit

[TerrorJack]

This issue is a feature request for wasm-ld to support splitting up linker-generated relocation functions like __wasm_apply_data_relocs in case it's linking a huge output .so with many relocation entries, in which case the function body may become too large and exceed the function body size limit enforced by major wasm engines.

[llvmbot]

@llvm/issue-subscribers-lld-wasm

Author: Cheng Shao (TerrorJack)

This issue is a feature request for `wasm-ld` to support splitting up linker-generated relocation functions like `__wasm_apply_data_relocs` in case it's linking a huge output `.so` with many relocation entries, in which case the function body may become too large and exceed the function body [size limit](https://source.chromium.org/chromium/chromium/src/+/main:v8/src/wasm/wasm-limits.h;l=50?q=kV8MaxWasmFunctionSize&sq=) enforced by major wasm engines.

[sbc100]

I think this is a duplicate of #55608?

[TerrorJack]

Closing as duplicate then, thanks for the pointer.