Agner speaks about memory renaming back on Zen 2: https://www.agner.org/forum/viewtopic.php?t=41 https://www.agner.org/forum/viewtopic.php?t=41 Intel Alderlak

Agner speaks about memory renaming back on Zen 2: https://www.agner.org/forum/viewtopic.php?t=41 https://www.agner.org/forum/viewtopic.php?t=41 Intel Alderlake has performance events for tracking it: https://github.com/intel/perfmon/blob/974c69919b2a9dfd8278cfe3384d2ae8ede477e9/ADL/events/alderlake_gracemont_core.json#L2126 https://github.com/intel/perfmon/blob/974c69919b2a9dfd8278cf... But even before this you had store to load forwarding on x86. I'm not saying you have, but before inventing a performance problem it is worth spending time trying to diagnose it with thorough profiling (e.g. [1]). The Fedora frame pointer patch did a thorough performance analysis and performance will be revisited again. Unfortunately there are a lot of arm chair performance experts who haven't spent time looking into the details. [1] https://perf.wiki.kernel.org/index.php/Top-Down_Analysis https://perf.wiki.kernel.org/index.php/Top-Down_Analysis