https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108117
--- Comment #17 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alexander Monakov <amona...@gcc.gnu.org>: https://gcc.gnu.org/g:733a1b777f16cd397b43a242d9c31761f66d3da8 commit r13-5154-g733a1b777f16cd397b43a242d9c31761f66d3da8 Author: Alexander Monakov <amona...@ispras.ru> Date: Fri Jan 13 21:04:02 2023 +0300 sched-deps: do not schedule pseudos across calls [PR108117] Scheduling across calls in the pre-RA scheduler is problematic: we do not take liveness info into account, and are thus prone to extending lifetime of a pseudo over the loop, requiring a callee-saved hardreg or causing a spill. If current function called a setjmp, lifting an assignment over a call may be incorrect if a longjmp would happen before the assignment. Thanks to Jose Marchesi for testing on AArch64. gcc/ChangeLog: PR rtl-optimization/108117 PR rtl-optimization/108132 * sched-deps.cc (deps_analyze_insn): Do not schedule across calls before reload. gcc/testsuite/ChangeLog: PR rtl-optimization/108117 PR rtl-optimization/108132 * gcc.dg/pr108117.c: New test.
