[PATCH] D32330: X86: Don't emit zero-byte functions on Windows

[Hans Wennborg via Phabricator via llvm-commits]

hans created this revision.

Empty functions can lead to duplicate entries in the Guard CF Function Table of a binary due to multiple functions sharing the same RVA, causing the kernel to refuse to load that binary.

We had a terrific bug due to this in Chromium.


https://reviews.llvm.org/D32330

Files:
  lib/Target/X86/X86TargetMachine.cpp
  test/CodeGen/X86/empty-function.ll

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