{"id":2219556,"url":"http://patchwork.ozlabs.org/api/patches/2219556/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260403111758.3755791-1-michiel@synopsys.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260403111758.3755791-1-michiel@synopsys.com>","list_archive_url":null,"date":"2026-04-03T11:17:58","name":"RISC-V: Omit ghost from the pipeline-checker output","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"cb9a95f5d86a3d9cad470b9e36f5f85a13b11dcc","submitter":{"id":93030,"url":"http://patchwork.ozlabs.org/api/people/93030/?format=json","name":"Michiel Derhaeg","email":"Michiel.Derhaeg@synopsys.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260403111758.3755791-1-michiel@synopsys.com/mbox/","series":[{"id":498618,"url":"http://patchwork.ozlabs.org/api/series/498618/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=498618","date":"2026-04-03T11:17:58","name":"RISC-V: Omit ghost from the pipeline-checker output","version":1,"mbox":"http://patchwork.ozlabs.org/series/498618/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219556/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219556/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=synopsys.com header.i=@synopsys.com 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definitions=2026-04-03_03,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_active_cloned_notspam\n policy=outbound_active_cloned score=0 clxscore=1011 malwarescore=0\n priorityscore=1501 suspectscore=0 spamscore=0 lowpriorityscore=0 adultscore=0\n bulkscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0\n authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1\n engine=8.22.0-2603050001 definitions=main-2604030100","X-BeenThere":"gcc-patches@gcc.gnu.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Gcc-patches mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"I noticed some pipelines erroneously provide reservations for ghost.\nLikely because the pipeline-checker will report it as missing.\n\nThis patch filters out all default reservations (only ghost now) from\nriscv.md.\n\ngcc/ChangeLog:\n\n * config/riscv/pipeline-checker: Filter tuneless insn types.\n\nSigned-off-by: Michiel Derhaeg \n---\n gcc/config/riscv/pipeline-checker | 21 +++++++++++++++++----\n 1 file changed, 17 insertions(+), 4 deletions(-)","diff":"diff --git a/gcc/config/riscv/pipeline-checker b/gcc/config/riscv/pipeline-checker\nindex c5694b84ca8..0236d3d6496 100755\n--- a/gcc/config/riscv/pipeline-checker\n+++ b/gcc/config/riscv/pipeline-checker\n@@ -23,7 +23,7 @@ import re\n import sys\n import argparse\n from pathlib import Path\n-from typing import List\n+from typing import Any, List\n import pprint\n \n def remove_line_comments(text: str) -> str:\n@@ -141,15 +141,24 @@ def get_consumed_type(entry: List[str]) -> set:\n return parsing_str_set(entry[2])\n return set()\n \n-def check_pipemodel(md_file_path: str):\n+def has_tune_attr(entry: Any) -> bool:\n+ # Check if an expression tree contains (eq_attr \"tune\" ...).\n+ if isinstance(entry, list):\n+ if len(entry) >= 2 and entry[0] == 'eq_attr' and entry[1] == 'tune':\n+ return True\n+ return any(has_tune_attr(elem) for elem in entry)\n+ return False\n+\n+def check_pipemodel(md_file_path: str, tuneless_only: bool = False) -> set[str]:\n # Load the RISCV MD file and check for pipemodel\n ast = parse_md_file(Path(md_file_path))\n \n consumed_type = set()\n \n for entry in ast:\n- entry_type = entry[0]\n- if entry_type not in [\"define_insn_reservation\"]:\n+ if entry[0] != \"define_insn_reservation\":\n+ continue\n+ if tuneless_only and has_tune_attr(entry[3]):\n continue\n consumed_type |= get_consumed_type(entry[3])\n return consumed_type\n@@ -173,11 +182,15 @@ def main():\n else:\n base_md_path = Path(args.base_md)\n avaliable_types = get_avaliable_types(str(base_md_path))\n+ tuneless_types = check_pipemodel(str(base_md_path), tuneless_only=True)\n consumed_type = check_pipemodel(args.pipeline_model)\n \n if args.verbose:\n print(\"Available types:\\n\", avaliable_types)\n print(\"Consumed types:\\n\", consumed_type)\n+ print(\"Tune-independent types:\\n\", tuneless_types)\n+\n+ avaliable_types -= tuneless_types\n \n if not avaliable_types.issubset(consumed_type):\n print(\"Error: Some types are not consumed by the pipemodel\")\n","prefixes":[]}