https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109807
--- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Haochen Jiang from comment #1) > I further checked the reason, V2SI should never dropped into that function > because we have no pattern under V2SI. > > I suppose it is because -march=cascadelake will open SSE4.1, with the new > pattern, it wrongly dropped into that. > > -m32 will not ICE since TARGET_MMX_WITH_SSE need 64 bit and won't enable the > new pattern. V2SI mul was introduced in r14-493 (AKA partial fix for PR109690).
