llvm/llvm-project

[X86] update_llc_test_checks.py fails on win32 triples

Open

#31,744 opened on Mar 23, 2017

View on GitHub
 (13 comments) (0 reactions) (0 assignees)C++ (26,378 stars) (10,782 forks)batch import
bugzillagood first issuellvm-tools

Description
Bugzilla Link 32397
Version trunk
OS Windows NT
CC @gregbedwell,@MaskRay,@rotateright

Extended Description

The generated assembly seems to be different enough to prevent the script working correctly

Contributor guide

Tech stack
cpppython
Domain
testingtooling
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Familiarity with update llc test checks.pyUnderstanding of X86 assemblyWindows OS experience
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
The issue reports that update llc test checks.py fails on Windows due to differences in assembly output. First, review the 13 comments in the issue for any suggested fixes or analysis. Then, examine the script (likely in utils/update llc test checks.py) to understand how it parses assembly. Compare the assembly output on Windows and Linux to identify the specific differences that cause the failure. Consider checking if there are existing test cases that reproduce the issue.