[{"id":3685157,"web_url":"http://patchwork.ozlabs.org/comment/3685157/","msgid":"","list_archive_url":null,"date":"2026-05-01T15:42:49","subject":"Re: [PATCH] RISC-V: Extract fusion logic to riscv-fusion.cc","submitter":{"id":92310,"url":"http://patchwork.ozlabs.org/api/people/92310/","name":"Jeffrey Law","email":"jeffrey.law@oss.qualcomm.com"},"content":"On 4/29/2026 7:29 AM, Michiel Derhaeg wrote:\n> Simple non-functional change.\n>\n> I'm planning to add many more cases to riscv_macro_fusion_pair_p so it\n> is moved to a separate source file to prevent riscv.cc from becoming\n> too unwieldy.\n>\n> Also added some tests to verify the cases that are actually tied to\n> mtunes present upstream. Unfortunately, many of them are not.\n>\n> Regtested for rv32gc & rv64gc with the new tests included in the baseline.\n>\n> gcc/ChangeLog:\n>\n> * config.gcc: Added riscv-fusion.o\n> * config/riscv/riscv-protos.h (enum riscv_fusion_pairs):\n> (riscv_macro_fusion_p): Added declaration.\n> (riscv_macro_fusion_pair_p): Idem.\n> (riscv_get_fusible_ops): Idem.\n> * config/riscv/riscv.cc (enum riscv_fusion_pairs):\n> (riscv_macro_fusion_p): Moved to riscv-fusion.cc\n> (riscv_fusion_enabled_p): Idem.\n> (riscv_set_is_add): Idem.\n> (riscv_set_is_addi): Idem.\n> (riscv_set_is_adduw): Idem.\n> (riscv_set_is_shNadd): Idem.\n> (riscv_set_is_shNadduw): Idem.\n> (riscv_macro_fusion_pair_p): Idem.\n> (riscv_get_fusible_ops): New function to access tune_param->fusible_ops\n> from riscv-fusion.cc.\n> * config/riscv/t-riscv: Added riscv-fusion.cc\n> * config/riscv/riscv-fusion.cc: New file.\n>\n> gcc/testsuite/ChangeLog:\n>\n> * gcc.target/riscv/fusion-auipc-addi.c: New test.\n> * gcc.target/riscv/fusion-lui-addi.c: New test.\n> * gcc.target/riscv/fusion-zexth.c: New test.\n> * gcc.target/riscv/fusion-zextw.c: New test.\nTHanks.  I've pushed this to the trunk.   Looking at the testsuite \nsituation, we've got several tests internally, but they're predicated on \nthe vt2 uarch tuning which we haven't upstreamed.  If you want copies to \nsee if they're useful to your effort, I'm happy to pass them along.\n\njeff","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=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=BOdHyliX;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=YPcEFYzm;\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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Thanks!\n\nMichiel\n\nOn 01/05 09:42, Jeffrey Law wrote:\n> \n> \n> THanks.  I've pushed this to the trunk.   Looking at the testsuite\n> situation, we've got several tests internally, but they're predicated on the\n> vt2 uarch tuning which we haven't upstreamed.  If you want copies to see if\n> they're useful to your effort, I'm happy to pass them along.\n> \n> jeff","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=di2oKOtP;\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; helo=vm01.sourceware.org;\n envelope-from=gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org;\n receiver=patchwork.ozlabs.org)","sourceware.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=di2oKOtP","sourceware.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","sourceware.org; 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