[PATCH] D101608: [WebAssembly] Support for WebAssembly globals in LLVM IR

[Andy Wingo via Phabricator via llvm-commits]

wingo created this revision.
wingo added reviewers: tlively, pmatos.
Herald added subscribers: ecnelises, sunfish, hiraditya, jgravelle-google, sbc100, dschuff.
wingo requested review of this revision.
Herald added subscribers: llvm-commits, aheejin.
Herald added a project: LLVM.

This patch adds support for WebAssembly globals in LLVM IR, representing
them as pointers to global values, in a non-default, non-integral
address space.  Instruction selection legalizes loads and stores to
these pointers to new WebAssemblyISD nodes GLOBAL_GET and GLOBAL_SET.
Once the lowering creates the new nodes, tablegen pattern matches those
and converts them to Wasm global.get/set of the appropriate type.

Based on work by Paulo Matos in https://reviews.llvm.org/D95425.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101608

Files:
  llvm/lib/Target/WebAssembly/WebAssemblyISD.def
  llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp
  llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.h
  llvm/lib/Target/WebAssembly/WebAssemblyInstrInfo.td
  llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
  llvm/test/CodeGen/WebAssembly/global-get.ll
  llvm/test/CodeGen/WebAssembly/global-set.ll

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