[{"id":3678970,"web_url":"http://patchwork.ozlabs.org/comment/3678970/","msgid":"<87ik9oqvga.fsf@googlemail.com>","list_archive_url":null,"date":"2026-04-18T12:55:33","subject":"Re: [PATCH 6/7] aarch64: Extend comment about saving/restoring zt0","submitter":{"id":4363,"url":"http://patchwork.ozlabs.org/api/people/4363/","name":"Richard Sandiford","email":"rdsandiford@googlemail.com"},"content":"Alice Carlotti writes:\n> gcc/ChangeLog:\n>\n> \t* config/aarch64/aarch64.cc (aarch64_start_call_args): Extend\n> \tcomment.\n\nOK, thanks.\n\nRichard\n\n> diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc\n> index bb4c95d33a692b3ea7c171afb803459070f4eb5c..c92b7eee12f37d11a48e678ca7af73f231238bb0 100644\n> --- a/gcc/config/aarch64/aarch64.cc\n> +++ b/gcc/config/aarch64/aarch64.cc\n> @@ -12224,7 +12224,8 @@ aarch64_start_call_args (cumulative_args_t ca_v)\n> emit_insn (gen_aarch64_start_private_za_call ());\n> \n> /* If this is a call to a shared-ZA function that doesn't share ZT0,\n> - save and restore ZT0 around the call. */\n> + save and restore ZT0 around the call. If ZA is not shared, then the\n> + save/restore is instead emitted by aarch64_mode_emit_local_sme_state. */\n> if (aarch64_cfun_has_state (\"zt0\")\n> && (ca->isa_mode & AARCH64_ISA_MODE_ZA_ON)\n> && ca->shared_zt0_flags == 0)","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=googlemail.com header.i=@googlemail.com\n header.a=rsa-sha256 header.s=20251104 header.b=JrbFEeAG;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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=googlemail.com header.i=@googlemail.com\n header.a=rsa-sha256 header.s=20251104 header.b=JrbFEeAG","sourceware.org; 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