Description

When building PHP on Alpine Linux 3.22 with musl and targeting 32-bit or 64-bit x86 platforms, a regression is observed related to inline assembly inext/opcache/jit/zend_jit_ir.c, specifically:

This errordoes not occur on Alpine 3.21 using the same compilation toolchain. The issue stems from the@TLSGD usage which implicitly expects%rdi on x86_64 or%eax on i386, depending on the TLS model.

ext/opcache/jit/zend_jit_ir.c:3459: Error: @TLSGD operator requires%rdi' as dest register`

Environment

• Alpine Linux 3.22
• GCC (viabuild-base)
• musl libc
• Target:x86_64 ori386
• Affected file:ext/opcache/jit/zend_jit_ir.c

Related PR / Reference

• Add Alpine 3.22 (remove Alpine 3.20) docker-library/php#1580

PHP Version

8.4.7-zts8.3.21-zts8.2.28-zts8.1.32-zts

Operating System

Alpine 3.22