https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106564
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Dimitar Dimitrov <dimi...@gcc.gnu.org>: https://gcc.gnu.org/g:10dd6dea95c5fc41c789c6506338e101e0590a02 commit r13-2140-g10dd6dea95c5fc41c789c6506338e101e0590a02 Author: Dimitar Dimitrov <dimi...@dinux.eu> Date: Sun Aug 14 18:50:18 2022 +0300 PR target/106564: pru: Optimize 64-bit sign- and zero-extend Add new patterns to optimize 64-bit sign- and zero-extend operations for the PRU target. The new 64-bit zero-extend patterns are straightforward define_insns. The old 16/32-bit sign-extend pattern has been rewritten from scratch in order to add 64-bit support. The new pattern expands into several optimized insns for filling bytes with zeros or ones, and for conditional branching on bit-test. The bulk of this patch is to implement the patterns for those new optimized insns. PR target/106564 gcc/ChangeLog: * config/pru/constraints.md (Um): New constraint for -1. (Uf): New constraint for IOR fill-bytes constants. (Uz): New constraint for AND zero-bytes constants. * config/pru/predicates.md (const_fillbytes_operand): New predicate for IOR fill-bytes constants. (const_zerobytes_operand): New predicate for AND zero-bytes constants. * config/pru/pru-protos.h (pru_output_sign_extend): Remove. (struct pru_byterange): New struct to describe a byte range. (pru_calc_byterange): New declaration. * config/pru/pru.cc (pru_rtx_costs): Add penalty for 64-bit zero-extend. (pru_output_sign_extend): Remove. (pru_calc_byterange): New helper function to extract byte range info from a constant. (pru_print_operand): Remove 'y' and 'z' print modifiers. * config/pru/pru.md (zero_extendqidi2): New pattern. (zero_extendhidi2): New pattern. (zero_extendsidi2): New pattern. (extend<EQS0:mode><EQD:mode>2): Rewrite as an expand. (@pru_ior_fillbytes<mode>): New pattern. (@pru_and_zerobytes<mode>): New pattern. (<code>di3): Rewrite as an expand and handle ZERO and FILL special cases. (pru_<code>di3): New name for <code>di3. (@cbranch_qbbx_const_<BIT_TEST:code><HIDI:mode>): New pattern to handle bit-test for 64-bit registers. gcc/testsuite/ChangeLog: * gcc.target/pru/pr106564-1.c: New test. * gcc.target/pru/pr106564-2.c: New test. * gcc.target/pru/pr106564-3.c: New test. * gcc.target/pru/pr106564-4.c: New test. Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
