https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100152
--- Comment #59 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Iain D Sandoe <ia...@gcc.gnu.org>: https://gcc.gnu.org/g:b6a762bf4645d495ea2218dbabcebd0c15eb60fc commit r10-10797-gb6a762bf4645d495ea2218dbabcebd0c15eb60fc Author: Iain Sandoe <i...@sandoe.co.uk> Date: Mon May 3 08:22:53 2021 +0100 Darwin, X86: Adjust call clobbers to allow for lazy-binding [PR 100152]. We allow public functions defined in a TU to bind locally for PIC code (the default) on 64bit Mach-O. If such functions are not inlined, we cannot tell at compile-time if they might be called via the lazy symbol resolver (this can depend on options given at link-time). Therefore, we must assume that the lazy resolver could be used which clobbers R11 and R10. Signed-off-by: Iain Sandoe <i...@sandoe.co.uk> gcc/ChangeLog: PR target/100152 * config/i386/i386-expand.c (ix86_expand_call): If a call is to a non-local-binding, or local but to a public symbol, then assume that it might be indirected via the lazy symbol binder. Mark R10 and R10 as clobbered in that case. (cherry picked from commit 41bd1b190358fce213f5add8396faf14a32d5c23)
