{"id":2223311,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2223311/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260415013645.5271-1-chenglulu@loongson.cn/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.2/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":"<20260415013645.5271-1-chenglulu@loongson.cn>","list_archive_url":null,"date":"2026-04-15T01:36:45","name":"LoongArch: Add rtx_cost support for ORDERED comparison.","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"bf7fa6af877f80b8bb21a77f2b6ea7f6119e34fb","submitter":{"id":82960,"url":"http://patchwork.ozlabs.org/api/1.2/people/82960/?format=json","name":"Lulu Cheng","email":"chenglulu@loongson.cn"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260415013645.5271-1-chenglulu@loongson.cn/mbox/","series":[{"id":499904,"url":"http://patchwork.ozlabs.org/api/1.2/series/499904/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=499904","date":"2026-04-15T01:36:45","name":"LoongArch: Add rtx_cost support for ORDERED comparison.","version":1,"mbox":"http://patchwork.ozlabs.org/series/499904/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223311/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2223311/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 spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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However, since the LoongArch\nbackend does not define the rtx_cost for the ORDERED RTX, the\ncalculated cost for UNORDERED becomes greater than that of ORDERED.\nThis triggers an inversion from UNORDERED to ORDERED, leading to\ntest failures in lasx-vcond-2.c and lsx-vcond-2.c.\n\nSince the assembly sequences generated for ORDERED and UNORDERED\nare identical on LoongArch, I have set the rtx_cost for ORDERED\nto match that of UNORDERED. This ensures consistent cost\nevaluation and allows the related test cases to pass.\n\ngcc/ChangeLog:\n\n\t* config/loongarch/loongarch.cc (loongarch_rtx_costs): Add\n\tRTX cost handling for the ORDERED RTX code.\n\n---\n gcc/config/loongarch/loongarch.cc | 1 +\n 1 file changed, 1 insertion(+)","diff":"diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc\nindex 33e728ddf5a..677d19c8550 100644\n--- a/gcc/config/loongarch/loongarch.cc\n+++ b/gcc/config/loongarch/loongarch.cc\n@@ -4280,6 +4280,7 @@ loongarch_rtx_costs (rtx x, machine_mode mode, int outer_code,\n case EQ:\n case NE:\n case UNORDERED:\n+ case ORDERED:\n case LTGT:\n case UNGE:\n case UNGT:\n","prefixes":[]}