Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
LLVM IR and passes skill for reading compiler IR. An agent skill from mohitmishra786/low-level-dev-skills.
Install Llvm Ir And Passes
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passes --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .claude/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .claude/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passesType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passes --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .agents/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .agents/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passes --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .cursor/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .cursor/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/mohitmishra786/low-level-dev-skills.git --path skills/compiler-internals/llvm-ir-and-passes--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passes --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .gemini/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .gemini/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passesInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .github/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .github/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mohitmishra786/low-level-dev-skills llvm-ir-and-passes --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mohitmishra786/low-level-dev-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/compiler-internals/llvm-ir-and-passes .opencode/skills/llvm-ir-and-passes && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "llvm-ir-and-passes" agent skill from https://github.com/mohitmishra786/low-level-dev-skills/tree/main/skills/compiler-internals/llvm-ir-and-passes into .opencode/skills/llvm-ir-and-passes/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "llvm-ir-and-passes", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
llvm-ir-and-passes- GitHub stars
- 252
- Token cost
- ~723 tokens
- SKILL.md length
- 208 words
- Files
- 1
- Skills in repo
- 138
- Repo updated
- First seen
- Licence
- MIT
At a glance
LLVM IR and passes skill for reading compiler IR. An agent skill from mohitmishra786/low-level-dev-skills.
- Works in 7 steps: LLVM IR structure → Emit IR from Clang → Standard optimization pipeline (New PM) → …
- Analyzing LLVM IR
- SKILL.md covers Purpose, When to Use, Workflow and Common Problems, plus 1 more section
- Calls rustc
What it does
Llvm Ir And Passes is an agent skill from mohitmishra786/low-level-dev-skills. LLVM IR and passes skill for reading compiler IR. Use when analyzing LLVM IR, understanding SSA, pass pipeline order, or running opt on bitcode. Activates on queries about LLVM IR, SSA form, opt passes, llvm-dis, pass pipeline, or reading .ll files.
Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development. The repository describes itself as: A curated suite of AI agent skills for systems and low-level programming with C/C++, Rust, and Zig toolchains, covering compilers, debuggers, profilers, build systems…. The licence is MIT.
When your agent uses it
- Analyzing LLVM IR
- Understanding SSA
- Pass pipeline order
- Running opt on bitcode
Example prompts
- “/llvm-ir-and-passes”
Workflow steps
7 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit bdc5847. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
rustc
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Llvm Ir And Passes loads about 723 tokens when it runs. Until then it costs about 67 tokens; SKILL.md has 208 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from mohitmishra786/low-level-dev-skills at commit bdc5847, republished under its MIT licence (© mohitmishra786). 208 words, ~723 tokens.
Download SKILL.mdSave it as
.claude/skills/llvm-ir-and-passes/SKILL.md (or your agent's skills folder).- name
- llvm-ir-and-passes
- description
- LLVM IR and passes skill for reading compiler IR. Use when analyzing LLVM IR, understanding SSA, pass pipeline order, or running opt on bitcode. Activates on queries about LLVM IR, SSA form, opt passes, llvm-dis, pass pipeline, or reading .ll files.
LLVM IR and Passes
Purpose
Teach agents to read and reason about LLVM IR (SSA, types, terminators), navigate the standard pass pipeline, and use opt/llvm-dis for inspection. Complements skills/compilers/llvm (toolchain) and skills/compiler-internals/llvm-passes (writing plugins) — not merged.
When to Use
- Understanding what
-O2changed in generated IR - Triaging miscompiles between Clang versions
- Preparing to write a custom pass
- Teaching SSA and dominance without writing C++ passes yet
Workflow
1. LLVM IR structure
; Function in SSA form
define i32 @add(i32 %a, i32 %b) {
entry:
%sum = add i32 %a, %b
ret i32 %sum
}Key concepts: basic blocks, PHI nodes at merges, typed values (i32, ptr, vectors).
2. Emit IR from Clang
clang -S -emit-llvm -O0 -o foo.ll foo.c
clang -c -emit-llvm -O2 -o foo.bc foo.c
llvm-dis foo.bc -o foo.ll3. Standard optimization pipeline (New PM)
Clang -O2 roughly runs:
SimplifyCFG → InstCombine → GVN → LICM → LoopVectorize → ...Inspect with:
opt -passes='default<O2>' -S foo.ll -o foo-opt.ll
opt -passes='default<O2>' -print-passes foo.ll 2>&1 | head4. Useful analysis passes
| Pass | Shows |
|---|---|
-passes=print<domtree> | Dominator tree |
-passes=print<loops> | Loop nests |
-passes=print-alias-sets | Alias sets |
opt -passes='print<domtree>' -disable-output foo.ll5. Reading PHI and UB
merge:
%v = phi i32 [ %a, %then ], [ %b, %else ]undef and poison in IR model LLVM poison semantics — distinct from C UB but related.
6. Compare before/after
opt -passes='instcombine,simplifycfg' -S foo.ll -o - | diff -u foo.ll -7. Agent usage
/llvm-ir-and-passes Explain this PHI node and which pass likely created itCommon Problems
| Symptom | Cause | Fix |
|---|---|---|
| Pass not found | LLVM version rename | opt --print-passes for your build |
| IR mismatch | Different LLVM major | Match clang/opt versions |
| "optnone" blocks opts | -O0 attribute | Compile with -O1+ |
| Huge IR | Inlined headers | -fno-discard-value-names off; filter function |
| Wrong pipeline | Legacy vs NPM | Use -passes= syntax |
Related Skills
skills/compilers/llvm— toolchain overviewskills/compiler-internals/llvm-passes— writing PassPluginsskills/compiler-internals/compiler-optimizations-deep— RA and ISelskills/compiler-internals/compiler-frontend— IR generationskills/rust/rustc-basics—rustc --emit=llvm-ir
© mohitmishra786, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in skills/compiler-internals/llvm-ir-and-passes of mohitmishra786/low-level-dev-skills.
Open the folder on GitHubat commit bdc5847
Compare with similar skills
Llvm Ir And Passes next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Llvm Ir And Passes this skillmohitmishra786/low-level-dev-skills | 252 | — | ~723 | Automated safety check: Pass | MIT | |
| Vercel Composition Patternssupabase/supabase | 111k | 58 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 297k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| PR Babysitteropeninterpreter/openinterpreter | 69k | 3 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 4 repos | ~1.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Llvm Ir And Passes
What does Llvm Ir And Passes do?
LLVM IR and passes skill for reading compiler IR. An agent skill from mohitmishra786/low-level-dev-skills. Llvm Ir And Passes is an agent skill from mohitmishra786/low-level-dev-skills. LLVM IR and passes skill for reading compiler IR.
When should I use Llvm Ir And Passes?
Llvm Ir And Passes fits situations like: analyzing LLVM IR; understanding SSA; pass pipeline order; running opt on bitcode.
How do I install Llvm Ir And Passes in Claude Code?
Run `npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a claude-code`. Or copy the skill folder (skills/compiler-internals/llvm-ir-and-passes in mohitmishra786/low-level-dev-skills) into .claude/skills/llvm-ir-and-passes in your project. Claude Code loads it when a task matches its description.
How do I install Llvm Ir And Passes in Codex?
Run `npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a codex`. Or copy the skill folder (skills/compiler-internals/llvm-ir-and-passes in mohitmishra786/low-level-dev-skills) into .agents/skills/llvm-ir-and-passes in your project. Codex loads it when a task matches its description.
Can I use Llvm Ir And Passes in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mohitmishra786/low-level-dev-skills --skill llvm-ir-and-passes -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/llvm-ir-and-passes, .gemini/skills/llvm-ir-and-passes, .github/skills/llvm-ir-and-passes and .opencode/skills/llvm-ir-and-passes in your project.
What does Llvm Ir And Passes need to run?
Going by SKILL.md and its folder, Llvm Ir And Passes needs the command-line tools its instructions call (rustc).
Does Llvm Ir And Passes access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Llvm Ir And Passes safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Llvm Ir And Passes use?
Llvm Ir And Passes is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Llvm Ir And Passes use?
About 723 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Llvm Ir And Passes?
Skills that share tags, products or a category with Llvm Ir And Passes: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 297k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Llvm Ir And Passes?
mohitmishra786 (a GitHub user) maintains it in mohitmishra786/low-level-dev-skills, which has 252 GitHub stars. The repository holds 138 skills in this directory. The repository was last updated on June 27, 2026.
Source: mohitmishra786/low-level-dev-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.