[PATCH] D83354: [Preallocated] Add @llvm.call.preallocated.teardown

[Arthur Eubanks via Phabricator via llvm-commits]

aeubanks created this revision.
aeubanks added reviewers: efriedma, hans.
Herald added subscribers: llvm-commits, jdoerfert, hiraditya.
Herald added a reviewer: jdoerfert.
Herald added a project: LLVM.

This cleans up the stack allocated by a @llvm.call.preallocated.setup.
Should either call the teardown or the preallocated call to clean up the
stack. Calling both is UB.

Add LangRef.

Add verifier check that the token argument is a @llvm.call.preallocated.setup.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83354

Files:
  llvm/docs/LangRef.rst
  llvm/include/llvm/IR/Intrinsics.td
  llvm/lib/IR/Verifier.cpp
  llvm/test/Verifier/preallocated-invalid.ll
  llvm/test/Verifier/preallocated-valid.ll

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