https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93053
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:5b2f76e36d861c881c6770b4f47c1fae6c0c8965 commit r10-7732-g5b2f76e36d861c881c6770b4f47c1fae6c0c8965 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Apr 15 11:01:19 2020 +0200 aarch64: Fix bootstrap with old binutils [PR93053] As reported in the PR, GCC 10 (and also 9.3.1 but not 9.3.0) fails to build when using older binutils which lack LSE support, because those instructions are used in libgcc. Thanks to Kyrylo's hint, the following patches (hopefully) allow it to build even with older binutils by using .inst directive if LSE support isn't available in the assembler. 2020-04-15 Jakub Jelinek <ja...@redhat.com> PR target/93053 * configure.ac (LIBGCC_CHECK_AS_LSE): Add HAVE_AS_LSE checking. * config/aarch64/lse.S: Include auto-target.h, if HAVE_AS_LSE is not defined, use just .arch armv8-a. (B, M, N, OPN): Define. (COMMENT): New .macro. (CAS, CASP, SWP, LDOP): Use .inst directive if HAVE_AS_LSE is not defined. Otherwise, move the operands right after the glue? and comment out operands where the macros are used. * configure: Regenerated. * config.in: Regenerated.
