llvm/llvm-project

[NVPTX] Test SM Versions via `ptxas`

Open

#137,028 opened on Apr 23, 2025

View on GitHub
 (7 comments) (0 reactions) (0 assignees)C++ (10,782 forks)batch import
backend:NVPTXgood first issue

Repository metrics

Stars
 (26,378 stars)
PR merge metrics
 (Avg merge 1d 2h) (1,000 merged PRs in 30d)

Description

llvm/test/CodeGen/NVPTX/sm-version.ll checks that the PTX and SM versions are supported by llc. However, we should also check that they're supported in ptxas.

Here's an example of how to run a test with ptxas: (source)

; RUN: %if ptxas %{ llc < %s -mtriple=nvptx64 -mcpu=sm_20 | %ptxas-verify %}

Contributor guide

Research direction
Add ptxas verification RUN line to sm version.ll following the pattern in inline asm.ll: run llc with ptxas verify.
Tech stack
None
Domain
testing
Issue type
Test
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitLLVM testing basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70