[PATCH] D51320: [WebAssembly] Made disassembler only use stack instructions.

[Wouter van Oortmerssen via Phabricator via llvm-commits]

aardappel created this revision.
aardappel added reviewers: dschuff, jgravelle-google, sunfish, tlively.
Herald added subscribers: llvm-commits, aheejin, sbc100.

Now uses the StackBased bit from the tablegen defs to identify
stack instructions (and ignore register based or non-wasm instructions).

Also changed how we store operands, since we now have up to 16 of them
per instruction. To not cause static data bloat, these are compressed
into a tiny table.

+ a few other cleanups.

Tested:

- MCTest
- llvm-lit -v `find test -name WebAssembly`


Repository:
  rL LLVM

https://reviews.llvm.org/D51320

Files:
  lib/Target/WebAssembly/Disassembler/WebAssemblyDisassembler.cpp
  test/MC/Disassembler/WebAssembly/wasm.txt
  utils/TableGen/WebAssemblyDisassemblerEmitter.cpp

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