https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87370
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Changed with: commit 350f354acdd2224797f93a979fff38cb631548a3 Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> Date: Thu Aug 11 15:51:01 2016 +0000 Use TImode for piecewise move in 64-bit mode Use TImode for piecewise move in 64-bit mode. We should use TImode in 32-bit mode and use OImode or XImode if they are available. But since by_pieces_ninsns determines the widest mode with MAX_FIXED_MODE_SIZE, we can only use TImode in 64-bit mode. gcc/ * config/i386/i386.h (MOVE_MAX_PIECES): Use TImode in 64-bit mode if unaligned SSE load and store are optimal. gcc/testsuite/ * gcc.target/i386/pieces-memcpy-1.c: New test. * gcc.target/i386/pieces-memcpy-2.c: Likewise. * gcc.target/i386/pieces-memcpy-3.c: Likewise. * gcc.target/i386/pieces-memcpy-4.c: Likewise. * gcc.target/i386/pieces-memcpy-5.c: Likewise. * gcc.target/i386/pieces-memcpy-6.c: Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@239378 138bc75d-0d04-0410-961f-82ee72b054a4