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GET /api/1.1/patches/2229453/?format=api
{ "id": 2229453, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2229453/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260428091201.E57184BB5899@sourceware.org/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.1/projects/17/?format=api", "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 }, "msgid": "<20260428091201.E57184BB5899@sourceware.org>", "date": "2026-04-28T09:11:25", "name": "[4/4] Add comment to vect_estimate_min_profitable_iters", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c836213d6f55868934e065cd450ed158bfb6c107", "submitter": { "id": 4338, "url": "http://patchwork.ozlabs.org/api/1.1/people/4338/?format=api", "name": "Richard Biener", "email": "rguenther@suse.de" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260428091201.E57184BB5899@sourceware.org/mbox/", "series": [ { "id": 501803, "url": "http://patchwork.ozlabs.org/api/1.1/series/501803/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=501803", "date": "2026-04-28T09:11:06", "name": "[1/4] Simplify vect_get_known_peeling_cost", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501803/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2229453/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2229453/checks/", "tags": {}, "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "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 (1024-bit key;\n unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256\n header.s=susede2_rsa header.b=akBtl+2q;\n\tdkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=oAucTNqr;\n\tdkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de\n header.a=rsa-sha256 header.s=susede2_rsa header.b=akBtl+2q;\n\tdkim=neutral header.d=suse.de header.i=@suse.de header.a=ed25519-sha256\n header.s=susede2_ed25519 header.b=oAucTNqr;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1777367485;\n h=from:from:reply-to:date:date:to:to:cc:mime-version:mime-version:\n content-type:content-type; bh=jRWkuXzsv1F6aKG9kQ14h6YZCxEAR57CpKQJTp5JPFU=;\n b=oAucTNqrsPO8LAmwsv2cvUBX44XPiaRgejMhkoinLzFKETD5lYdKlJ+8SUdGIbDYFdi+7d\n 36opGjwnSINmT0Ag==", "v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_rsa;\n t=1777367485;\n h=from:from:reply-to:date:date:to:to:cc:mime-version:mime-version:\n content-type:content-type; bh=jRWkuXzsv1F6aKG9kQ14h6YZCxEAR57CpKQJTp5JPFU=;\n b=akBtl+2qGfH8+izrjm9+8wry+7kxGYu+nZhXfG0pWexxHL6dEa+8bTwZsVgEAux9coIB1M\n nGL+9re35y/2JTxfFGseA63q72OnKHVwEthFoyd7Xygys2pTrQgH0qhORsCQjkmrjkv1i3\n 65jUYanD9i3kd9q9D4YAVGGgY7Y73OI=", "v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de;\n s=susede2_ed25519; t=1777367485;\n h=from:from:reply-to:date:date:to:to:cc:mime-version:mime-version:\n content-type:content-type; bh=jRWkuXzsv1F6aKG9kQ14h6YZCxEAR57CpKQJTp5JPFU=;\n b=oAucTNqrsPO8LAmwsv2cvUBX44XPiaRgejMhkoinLzFKETD5lYdKlJ+8SUdGIbDYFdi+7d\n 36opGjwnSINmT0Ag==" ], "Date": "Tue, 28 Apr 2026 11:11:25 +0200 (CEST)", "From": "Richard Biener <rguenther@suse.de>", "To": "gcc-patches@gcc.gnu.org", "Subject": "[PATCH 4/4] Add comment to vect_estimate_min_profitable_iters", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=US-ASCII", "X-Spamd-Result": "default: False [-1.80 / 50.00]; BAYES_HAM(-3.00)[100.00%];\n MISSING_MID(2.50)[]; NEURAL_HAM_LONG(-1.00)[-0.998];\n NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain];\n FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[];\n RCPT_COUNT_ONE(0.00)[1];\n DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519];\n TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[];\n RCVD_COUNT_ZERO(0.00)[0]; MISSING_XM_UA(0.00)[];\n FROM_EQ_ENVFROM(0.00)[]; TO_DN_NONE(0.00)[];\n MIME_TRACE(0.00)[0:+]", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org", "Message-Id": "<20260428091201.E57184BB5899@sourceware.org>" }, "content": "The following adds a comment how it's awkward to add the scalar loop\nstmt cost vectors with scaled count to the vector loop cost vector\nto estimate peeling costs.\n\nBootstrapped and tested on x86_64-unknown-linux-gnu, pushed.\n\n\t* tree-vect-loop.cc (vect_estimate_min_profitable_iters):\n\tAdd comment about costing of prologue/epilogue.\n---\n gcc/tree-vect-loop.cc | 5 +++++\n 1 file changed, 5 insertions(+)", "diff": "diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc\nindex 94f3d00d60e..ee540028ba9 100644\n--- a/gcc/tree-vect-loop.cc\n+++ b/gcc/tree-vect-loop.cc\n@@ -4130,6 +4130,11 @@ vect_estimate_min_profitable_iters (loop_vec_info loop_vinfo,\n \tepilogue_need_br_taken_cost = true;\n }\n \n+ /* The way we cummulate peeling costs into the vector prologue/epilogue\n+ cost is a bit awkward given we cannot reuse scalar_costs which is\n+ already computed and also because it cannot take into account any\n+ epilogue vectorization we'll carry out in the end. */\n+\n stmt_info_for_cost *si;\n int j;\n /* Add costs associated with peel_iters_prologue. */\n", "prefixes": [ "4/4" ] }