{"id":2231290,"url":"http://patchwork.ozlabs.org/api/patches/2231290/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/CAMe9rOpCWqbT69Rqg-2H24FC4CfsB82e6Zg-b2=oMgG+e21Bcg@mail.gmail.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":"","list_archive_url":null,"date":"2026-04-30T14:05:33","name":"x86: Disable 16-bit imm store for TARGET_LCP_STALL","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a83a1abc60156676b64d740d5b6cbcb679e5cc8a","submitter":{"id":4387,"url":"http://patchwork.ozlabs.org/api/people/4387/?format=json","name":"H.J. Lu","email":"hjl.tools@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/CAMe9rOpCWqbT69Rqg-2H24FC4CfsB82e6Zg-b2=oMgG+e21Bcg@mail.gmail.com/mbox/","series":[{"id":502309,"url":"http://patchwork.ozlabs.org/api/series/502309/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=502309","date":"2026-04-30T14:05:33","name":"x86: Disable 16-bit imm store for TARGET_LCP_STALL","version":1,"mbox":"http://patchwork.ozlabs.org/series/502309/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2231290/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231290/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=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=blA8e7dJ;\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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Thu, 30 Apr 2026\n 07:06:10 -0700 (PDT)","MIME-Version":"1.0","From":"\"H.J. Lu\" ","Date":"Thu, 30 Apr 2026 22:05:33 +0800","X-Gm-Features":"AVHnY4Imng47l7QZKvp0WnL1oWQJX6KSMT9Bgk-eB4smq_nkCgRe8Ok5A9p5PaU","Message-ID":"\n ","Subject":"[PATCH] x86: Disable 16-bit imm store for TARGET_LCP_STALL","To":"GCC Patches , Uros Bizjak ,\n Hongtao Liu ","Content-Type":"multipart/mixed; boundary=\"000000000000630c730650adf73a\"","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":"When TARGET_LCP_STALL is enabled, 16-bit immediate integer store should\nbe avoided. Update V_16_32_64:*mov_imm to disable 16-bit immediate\ninteger store when TARGET_LCP_STALL is enabled.\n\nTested on Linux/x86-64 and Linux/i686.\n\nPR target/125102\n* config/i386/mmx.md (V_16_32_64:*mov_imm): Disable\n16-bit immediate integer store if TARGET_LCP_STALL is true.","diff":"From 27b8cbe14e4e9ef5c543b328a625dde180268184 Mon Sep 17 00:00:00 2001\nFrom: \"H.J. Lu\" \nDate: Thu, 30 Apr 2026 15:37:13 +0800\nSubject: [PATCH] x86: Disable 16-bit imm store for TARGET_LCP_STALL\n\nWhen TARGET_LCP_STALL is enabled, 16-bit immediate integer store should\nbe avoided. Update V_16_32_64:*mov_imm to disable 16-bit immediate\ninteger store when TARGET_LCP_STALL is enabled.\n\nTested on Linux/x86-64 and Linux/i686.\n\n\tPR target/125102\n\t* config/i386/mmx.md (V_16_32_64:*mov_imm): Disable\n\t16-bit immediate integer store if TARGET_LCP_STALL is true.\n\nSigned-off-by: H.J. Lu \n---\n gcc/config/i386/mmx.md | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)\n\ndiff --git a/gcc/config/i386/mmx.md b/gcc/config/i386/mmx.md\nindex 8c50480b76b..d747146776b 100644\n--- a/gcc/config/i386/mmx.md\n+++ b/gcc/config/i386/mmx.md\n@@ -598,7 +598,7 @@ (define_split\n (define_insn_and_split \"*mov_imm\"\n [(set (match_operand:V_16_32_64 0 \"memory_operand\" \"=m\")\n \t(match_operand:V_16_32_64 1 \"x86_64_const_vector_operand\" \"i\"))]\n- \"\"\n+ \"!TARGET_LCP_STALL || mode != V2QImode\"\n \"#\"\n \"&& reload_completed\"\n [(set (match_dup 0) (match_dup 1))]\n-- \n2.54.0\n\n","prefixes":[]}