https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121540
Bug ID: 121540
Summary: [16 Regression] MMX is allowed in function with
no_caller_saved_registers attribute
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
commit 9804b23198b39f85a7258be556c5e8aed44b9efc
Author: H.J. Lu <hjl.to...@gmail.com>
Date: Sun Apr 13 11:38:24 2025 -0700
x86: Add preserve_none and update no_caller_saved_registers attributes
allows MMX in function with no_caller_saved_registers attribute.
gcc.target/i386/pr121208-1a.c and gcc.target/i386/no-callee-saved-19a.c should
fail to compile without -mno-sse -mno-mmx.
