https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116140
--- Comment #12 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Alex Coplan <acop...@gcc.gnu.org>: https://gcc.gnu.org/g:9759f6299d9633cabac540e5c893341c708093ac commit r15-3585-g9759f6299d9633cabac540e5c893341c708093ac Author: Alex Coplan <alex.cop...@arm.com> Date: Sat Aug 3 17:02:36 2024 +0000 lto: Stream has_unroll flag during LTO [PR116140] When #pragma GCC unroll is processed in tree-cfg.cc:replace_loop_annotate_in_block, we set both the loop->unroll field (which is currently streamed out and back in during LTO) but also the cfun->has_unroll flag. cfun->has_unroll, however, is not currently streamed during LTO. This patch fixes that. Prior to this patch, loops marked with #pragma GCC unroll that would be unrolled by RTL loop2_unroll in a non-LTO compilation didn't get unrolled under LTO. gcc/ChangeLog: PR libstdc++/116140 * lto-streamer-in.cc (input_struct_function_base): Stream in fn->has_unroll. * lto-streamer-out.cc (output_struct_function_base): Stream out fn->has_unroll. gcc/testsuite/ChangeLog: PR libstdc++/116140 * g++.dg/ext/pragma-unroll-lambda-lto.C: New test.
