https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102570
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:55a3be2f5255d69e740d61b2c5aaba1ccbc643b8 commit r12-4143-g55a3be2f5255d69e740d61b2c5aaba1ccbc643b8 Author: Richard Biener <rguent...@suse.de> Date: Mon Oct 4 10:57:45 2021 +0200 tree-optimization/102570 - teach VN about internal functions We're now using internal functions for a lot of stuff but there's still missing VN support out of laziness. The following instantiates support and adds testcases for FRE and PRE (hoisting). 2021-10-04 Richard Biener <rguent...@suse.de> PR tree-optimization/102570 * tree-ssa-sccvn.h (vn_reference_op_struct): Document we are using clique for the internal function code. * tree-ssa-sccvn.c (vn_reference_op_eq): Compare the internal function code. (print_vn_reference_ops): Print the internal function code. (vn_reference_op_compute_hash): Hash it. (copy_reference_ops_from_call): Record it. (visit_stmt): Remove the restriction around internal function calls. (fully_constant_vn_reference_p): Use fold_const_call and handle internal functions. (vn_reference_eq): Compare call return types. * tree-ssa-pre.c (create_expression_by_pieces): Handle generating calls to internal functions. (compute_avail): Remove the restriction around internal function calls. * gcc.dg/tree-ssa/ssa-fre-96.c: New testcase. * gcc.dg/tree-ssa/ssa-pre-33.c: Likewise.
