Re: com php-src: Fixes for x32 ABI: Zend/zend_long.h Zend/zend_types.h ext/date/lib/timelib_structs.h ext/standard/file.c ext/standard/streamsfuncs.c

On Mon, May 25, 2015 at 4:30 PM, Dmitry Stogov <dmitry@zend.com> wrote: > Hi Nikita, > > I've never able to check PHP on X32. Is it compatible now? > Did you see any performance improvement in comparison to x86 and X86_64? > > Complete X32 support probably needs additional effort to enable global > register variables and assembler code conversion... > There are a couple of failing tests, but for practical purposes everything works. I've set zend_long size to 64bit, so all the usual x86-64 assembly is still correct. (Essentially only using 32bit size_t and pointers.) Globals regs also worked out of the box. Sadly I didn't see an improvement compared to x86-64. bench.php and micro_bench.php are around the same. Against WP-4.1 with -T 500 I even got a regression: 5.30s on amd64 and 5.45s on x32. I could try to use 32bit zend_longs instead, which will require some assembly adjustments. Nikita