[PATCH] D72215: [AArch64] Add function attribute "patchable-function-entry" to add NOPs at function entry

[Fangrui Song via Phabricator via llvm-commits]

MaskRay updated this revision to Diff 236528.
MaskRay added a comment.

Add __patchable_function_entries section

GCC's implementation has 2 problems: (1) it does not set the SHF_WRITE flag https://gcc.gnu.org/ml/gcc/2020-01/msg00048.html (2) sh_addralign is not pointersize


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D72215/new/

https://reviews.llvm.org/D72215

Files:
  llvm/include/llvm/CodeGen/AsmPrinter.h
  llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
  llvm/lib/CodeGen/PatchableFunction.cpp
  llvm/lib/IR/Verifier.cpp
  llvm/lib/Target/AArch64/AArch64AsmPrinter.cpp
  llvm/test/CodeGen/AArch64/patchable-function-entry.ll
  llvm/test/Verifier/invalid-patchable-function-entry.ll

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