https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109944
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:affee7dcfa1ee272d43ac7cb68cf423dbd956fd8 commit r14-1166-gaffee7dcfa1ee272d43ac7cb68cf423dbd956fd8 Author: Richard Biener <rguent...@suse.de> Date: Wed May 24 10:07:36 2023 +0200 target/109944 - avoid STLF fail for V16QImode CTOR expansion The following dispatches to V2DImode CTOR expansion instead of using sets of (subreg:DI (reg:V16QI 146) [08]) which causes LRA to spill DImode and reload V16QImode. The same applies for V8QImode or V4HImode construction from SImode parts which happens during 32bit libgcc build. PR target/109944 * config/i386/i386-expand.cc (ix86_expand_vector_init_general): Perform final vector composition using ix86_expand_vector_init_general instead of setting the highpart and lowpart which causes spilling. * gcc.target/i386/pr109944-1.c: New testcase. * gcc.target/i386/pr109944-2.c: Likewise.
