[PATCH] D90948: [WebAssembly] call_indirect issues table number relocs

[Andy Wingo via Phabricator via llvm-commits]

wingo added a comment.

Well, this patch was a bit of a journey!  But finally it's ready, having calved off a number of precursor patches that landed already.  Notably we needed to fix wasm-ld to be able to understand table symbols, before emitting them here.

So in this patch, we add a "table" operand to `call_indirect`, causing `call_indirect` instructions to emit `TABLE_NUMBER` relocs.  We add support for this operand in the asm parser; if the table is not given, it defaults to __indirect_function_table as usual.  Likewise, lowering in codegen synthesizes a reference to the `__indirect_function_table` when making `call_indirect` MC instructions.  The end result is that MC and CodeGen tests end up making more relocs, the `call_indirect` instructions have 5-byte LEBs for the table number, and there are symbols in the output for tables.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D90948/new/

https://reviews.llvm.org/D90948