https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98136
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Richard Sandiford <rsand...@gcc.gnu.org>: https://gcc.gnu.org/g:63da018de828b4792e95d1431118fd10efef87d1 commit r10-9751-g63da018de828b4792e95d1431118fd10efef87d1 Author: Richard Sandiford <richard.sandif...@arm.com> Date: Fri Apr 23 10:09:40 2021 +0100 aarch64: Tweak post-RA handling of CONST_INT moves [PR98136] This PR is a regression caused by r8-5967, where we replaced a call to aarch64_internal_mov_immediate in aarch64_add_offset with a call to aarch64_force_temporary, which in turn uses the normal emit_move_insn{,_1} routines. The problem is that aarch64_add_offset can be called while outputting a thunk, where we require all instructions to be valid without splitting. However, the move expanders were not splitting CONST_INT moves themselves. I think the right fix is to make the move expanders work even in this scenario, rather than require callers to handle it as a special case. gcc/ PR target/98136 * config/aarch64/aarch64.md (mov<mode>): Pass multi-instruction CONST_INTs to aarch64_expand_mov_immediate when called after RA. gcc/testsuite/ PR target/98136 * g++.dg/pr98136.C: New test. (cherry picked from commit 48c79f054bf435051c95ee093c45a0f8c9de5b4e)
