Landing: 8cdf8b6b1799

← All landings

Project / Subsystem

gcc / gcc

Date

2026-05-18

Author

Andi Kleen

Commit

8cdf8b6b17997a628fc8e7248cd6a25e89424f72

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: gcc
patch_id: —
commit_hash: 8cdf8b6b17997a628fc8e7248cd6a25e89424f72
source_type: github
headline: Fix MASM ptwrite output for Intel syntax
tldr: Fixes incorrect MASM ptwrite output when using Intel syntax by using an alternative code sequence.
author: Andi Kleen
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • x86
• assembler
• bugfix
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/8cdf8b6b17997a628fc8e7248cd6a25e89424f72
date: 2026-05-18T00:00:00.000Z

The previous fix for 64-bit ptwrite caused issues with Intel syntax output in MASM. This commit uses an alternative code sequence to correctly handle MASM ptwrite when Intel syntax is enabled, where the instruction data type is defined by the operands.