llvm-project/llvm/utils/vim
Sami Tolvanen 5dc8aaac39 [llvm][IR] Add no_cfi constant
With Control-Flow Integrity (CFI), the LowerTypeTests pass replaces
function references with CFI jump table references, which is a problem
for low-level code that needs the address of the actual function body.

For example, in the Linux kernel, the code that sets up interrupt
handlers needs to take the address of the interrupt handler function
instead of the CFI jump table, as the jump table may not even be mapped
into memory when an interrupt is triggered.

This change adds the no_cfi constant type, which wraps function
references in a value that LowerTypeTestsModule::replaceCfiUses does not
replace.

Link: https://github.com/ClangBuiltLinux/linux/issues/1353

Reviewed By: nickdesaulniers, pcc

Differential Revision: https://reviews.llvm.org/D108478
2021-12-20 12:55:32 -08:00
..
ftdetect [vim] Add initial syntax definition for .mir files 2021-02-17 02:38:16 -05:00
ftplugin [vim] Add initial syntax definition for .mir files 2021-02-17 02:38:16 -05:00
indent
syntax [llvm][IR] Add no_cfi constant 2021-12-20 12:55:32 -08:00
README
vimrc

README

-*- llvm/utils/vim/README -*-

This directory contains settings for the vim editor to work on llvm *.ll and
tablegen *.td files. It comes with filetype detection rules in the (ftdetect),
syntax highlighting (syntax), some minimal sensible default settings (ftplugin)
and indentation plugins (indent).

To install copy all subdirectories to your $HOME/.vim or if you prefer create
symlinks to the files here. Do not copy the vimrc file here it is only meant as
an inspiration and starting point for those working on llvm c++ code.

Note: If you notice missing or incorrect syntax highlighting, please contact
<llvm-bugs [at] lists.llvm.org>; if you wish to provide a patch to improve the
functionality, it will be most appreciated. Thank you.

If you find yourself working with LLVM Makefiles often, but you don't get syntax
highlighting (because the files have names such as Makefile.rules or
TEST.nightly.Makefile), add the following to your ~/.vimrc:

  " LLVM Makefile highlighting mode
  augroup filetype
    au! BufRead,BufNewFile *Makefile*     set filetype=make
  augroup END