LLVM

• llvm.org
  • releases
  • docs
• github.com/llvm
  • llvm-project

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FreeBSD 13

Start FreeBSD:

vagrant up
vagrant ssh

Built-in LLVM/Clang

clang --version

FreeBSD clang version 13.0.0 (git@github.com:llvm/llvm-project.git llvmorg-13.0.0-0-gd7b669b3a303)
Target: x86_64-unknown-freebsd13.1
Thread model: posix
InstalledDir: /usr/bin

Packages

sudo pkg update -f
sudo pkg install git cmake ninja cscope

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llvm/llvm-project.git

cd $HOME
git clone https://github.com/llvm/llvm-project.git

Setup

$HOME/.profile

cat <<EOF | tee -a $HOME/.profile > /dev/null

alias ll='ls -alGFh'
alias vi='vim'

export CSCOPE_DB="$HOME/llvm-project/cscope.out"

EOF

plugin.vim

cat /usr/local/share/vim/vim90/plugin/cscope_relative.vim

set cscope_relative

Cscope

• tutorial: Vim/Cscope
• cscope_maps.vim

cd llvm-project
cscope -b -q -R

• b: just build the database without GUI
• q: create a inverted index file
• R: parse all subdirectories

output:

cscope.in.out
cscope.out
cscope.po.out

Finding

• Find
  • :cs find s <keyword>: find this symbol
    • :cs find 0 <keyword>
    • :cs f s <C-R><C-W>: find the word under cursor
    • <C + \> + s: find the word under cursor
• Jump
  • :[count]tn[ext][!]: Jump to count next matching tag (default 1)
  • :[count]tp[revious][!]: Jump to count preivious matching tag (default 1)

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Source Code

• src/helloworld
  • src/helloworld/hello.c
• src/sum: opt, llc, llvm-mc, lli, llvm-link, llvm-as, llvm-dis
• src/frontend

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Ref

vimrc

• vimrc by amix