https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109780
--- Comment #24 from Xi Ruoyao <xry111 at gcc dot gnu.org> --- (In reply to H.J. Lu from comment #23) > Created attachment 55424 [details] > An updated patch Unfortunately Spidermonkey 115 still crashes even with the patch (and -O3 -march=tigerlike -mtune=tigerlake -fno-exceptions). The problem seems an unaligned stack slot is assigned for an object of a 512-bit aligned class. Then the pointer to the object is passed to another function which stores into the object with 256-bit vmovdqu but the stack slot is only aligned to 128-bit in fact. I'll try to reduce.
