https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99378
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Vladimir Makarov <vmaka...@gcc.gnu.org>: https://gcc.gnu.org/g:9105757a59b890194ebf5b4fcbacd58db34ef332 commit r11-7526-g9105757a59b890194ebf5b4fcbacd58db34ef332 Author: Vladimir N. Makarov <vmaka...@redhat.com> Date: Fri Mar 5 11:41:25 2021 -0500 [PR99378] LRA: Skip decomposing address for asm insn operand with unknown constraint. Function get_constraint_type returns CT__UNKNOWN for empty constraint and CT_FIXED_FORM for "X". So process_address_1 skipped decompose_mem_address only for "X" constraint. To do the same for empty constraint, skip decompose_mem_address for CT__UNKNOWN. gcc/ChangeLog: PR target/99378 * lra-constraints.c (process_address_1): Skip decomposing address for asm insn operand with unknown constraint. gcc/testsuite/ChangeLog: PR target/99378 * gcc.target/i386/pr99123-2.c: New.