Hi Moritz
> On 1 Aug 2026, at 21:15, Moritz Hoffmann <[email protected]> wrote: > > Hi Jean, > > I tried enabling IPO/LTO, and it seems to work fine on all supported > platforms. OpenBSD does not seem to support LTO, but all other platforms show > no difference in undefined behavior compared to non-LTO builds. I think we > should try enabling it again once the undefined behavior fixes are > implemented. > > You can check the test runs here: > > - https://github.com/antiguru/ooRexx/actions/runs/30713617550 > - https://github.com/antiguru/ooRexx/actions/runs/30713617554 > - https://github.com/antiguru/ooRexx/actions/runs/30713617566 Thank you very much! Other success: The test suite with IPO no longer crashes on WSL for Windows ARM. > > I plan to merge the fixes sometime next week. +1 rexxcps on macOS, 5 runs: ci/platforms with IPO/LTO 26885093 26816314 26924713 26646605 26625486 REXX clauses per second It's better than the previous results I communicated a few days ago: rexxcps on macOS, 5 runs: oorexx 5 25248593 25152888 25126680 25316819 25216759 REXX clauses per second concurrency-dispatch-fixes 25058219 25080047 25053259 25104624 25087157 REXX clauses per second 6.0% faster than oorexx 5 without your fixes. 6.8% faster than concurrency-dispatch-fixes. This is within the range of improvements that Enrico observed in 2020. https://sourceforge.net/p/oorexx/mailman/oorexx-devel/thread/EF50446F-5B4F-442D-BCD2-CE2CFEDE8AC7%40mac.com/#msg37080771 This improvement is not visible in the test suite duration. Sometimes ooRexx 5 without IPO is faster; sometimes ci/platforms with IPO is faster. For the same executable, I can see variations of up to ±10 seconds from one run to another. So, no reliable conclusion can be drawn.
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