Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/810655/?format=api
{ "id": 810655, "url": "http://patchwork.ozlabs.org/api/patches/810655/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170906144940.30880-15-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170906144940.30880-15-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2017-09-06T14:49:40", "name": "[PULL,14/14] tcg/s390: Use slbgr for setcond le and leu", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "bb5192d1f6207f15757d9bcdc076aa582845c2d1", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20170906144940.30880-15-richard.henderson@linaro.org/mbox/", "series": [ { "id": 1829, "url": "http://patchwork.ozlabs.org/api/series/1829/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=1829", "date": "2017-09-06T14:49:28", "name": "[PULL,01/14] tcg: Remove support for ia64 as host", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/1829/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/810655/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/810655/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"j93xauiE\"; dkim-atps=neutral" ], "Received": [ "from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xnRTz4W2Qz9s7C\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 7 Sep 2017 00:55:51 +1000 (AEST)", "from localhost ([::1]:36547 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1dpbk4-0001dC-EZ\n\tfor incoming@patchwork.ozlabs.org; Wed, 06 Sep 2017 10:55:48 -0400", "from eggs.gnu.org ([2001:4830:134:3::10]:40121)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from <richard.henderson@linaro.org>) id 1dpbea-0005en-Ko\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 10:50:11 -0400", "from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from <richard.henderson@linaro.org>) id 1dpbeU-0000SR-FX\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 10:50:08 -0400", "from mail-pf0-x22d.google.com ([2607:f8b0:400e:c00::22d]:36792)\n\tby eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16)\n\t(Exim 4.71) (envelope-from <richard.henderson@linaro.org>)\n\tid 1dpbeU-0000S4-7s\n\tfor qemu-devel@nongnu.org; Wed, 06 Sep 2017 10:50:02 -0400", "by mail-pf0-x22d.google.com with SMTP id e199so13133570pfh.3\n\tfor <qemu-devel@nongnu.org>; Wed, 06 Sep 2017 07:50:02 -0700 (PDT)", "from bigtime.twiddle.net (97-126-108-236.tukw.qwest.net.\n\t[97.126.108.236]) by smtp.gmail.com with ESMTPSA id\n\th1sm3467646pfg.153.2017.09.06.07.49.59\n\t(version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256);\n\tWed, 06 Sep 2017 07:49:59 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=pyrCD0X5hMABEfynCC0ORcitRg8eEvaZTchNZ88dfPM=;\n\tb=j93xauiEQK4tZCAQAtxwQ5Mw2EiZym6rkBPJ8FM8C4J/MAo/tZNR4nva6wXLe7VTZ6\n\tbpGXSruwrjlbF+KxJUHFw8D/yYQtvPse+g6a0Dh27+L1WEiBHBQctkUZn2yVM4RbggBn\n\tV8CzaQlTGEaioCghJuBlFPwcFHDJwtH7rQ8XE=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=pyrCD0X5hMABEfynCC0ORcitRg8eEvaZTchNZ88dfPM=;\n\tb=pnCVXmiTCFGNGH95tWqMXRy6M8GtJrc3wfNJAeT/bedP2u23KZgIn/+XS0I5AU/H0A\n\tW/UXOB9DvciHykZIGZpe6jm7RV7jgW0z55oEcqkM1LwZqpewB9f9LB39ijx9myZs4fV+\n\tJPpkcdC0pw4c9TdCP8Um88lDAyBhn4PoDtmmcXOuHrh8yi1k+cTO2MNZrlDUceUgcqVS\n\totASqkHyuZkO105rZN2jawM6dLd67J7whOCEkVnzvW7j3dSIs6TERd1THy+Xj7gR901c\n\tfuA3HA3U0LXkn1M5/kLxrzuiITvhhQ6lVMQVZm+7Om5ye7wDfxeOpZFjSM7guDN+0pcO\n\tpLSQ==", "X-Gm-Message-State": "AHPjjUi1ogVncwJK7XXJAnQ3n5cdEyoDhJKQDTpN8PGQitbTozlZeEiO\n\t2Zp3kfsqrR5d2mD9gOWqjw==", "X-Google-Smtp-Source": "ADKCNb5UdTCm89z0TWiIlymUurd0AH9MBww2STj/tDo+6veXyfdkvSVPalIg3OjAvYJ6JHuQpx3WGQ==", "X-Received": "by 10.84.129.72 with SMTP id 66mr8433731plb.102.1504709400705;\n\tWed, 06 Sep 2017 07:50:00 -0700 (PDT)", "From": "Richard Henderson <richard.henderson@linaro.org>", "To": "qemu-devel@nongnu.org", "Date": "Wed, 6 Sep 2017 07:49:40 -0700", "Message-Id": "<20170906144940.30880-15-richard.henderson@linaro.org>", "X-Mailer": "git-send-email 2.13.5", "In-Reply-To": "<20170906144940.30880-1-richard.henderson@linaro.org>", "References": "<20170906144940.30880-1-richard.henderson@linaro.org>", "X-detected-operating-system": "by eggs.gnu.org: Genre and OS details not\n\trecognized.", "X-Received-From": "2607:f8b0:400e:c00::22d", "Subject": "[Qemu-devel] [PULL 14/14] tcg/s390: Use slbgr for setcond le and leu", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.21", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<http://lists.nongnu.org/archive/html/qemu-devel/>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n\t<mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "peter.maydell@linaro.org, Richard Henderson <rth@twiddle.net>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n\t<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "From: Richard Henderson <rth@twiddle.net>\n\nAcked-by: Cornelia Huck <cohuck@redhat.com>\nSigned-off-by: Richard Henderson <rth@twiddle.net>\n---\n tcg/s390/tcg-target.inc.c | 119 +++++++++++++++++-----------------------------\n 1 file changed, 43 insertions(+), 76 deletions(-)", "diff": "diff --git a/tcg/s390/tcg-target.inc.c b/tcg/s390/tcg-target.inc.c\nindex 0de968fde2..38b9e791ee 100644\n--- a/tcg/s390/tcg-target.inc.c\n+++ b/tcg/s390/tcg-target.inc.c\n@@ -1084,11 +1084,20 @@ static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond,\n \n have_loc = (s390_facilities & FACILITY_LOAD_ON_COND) != 0;\n \n- /* For HAVE_LOC, only the path through do_greater is smaller. */\n+ /* For HAVE_LOC, only the paths through GTU/GT/LEU/LE are smaller. */\n+ restart:\n switch (cond) {\n+ case TCG_COND_NE:\n+ /* X != 0 is X > 0. */\n+ if (c2const && c2 == 0) {\n+ cond = TCG_COND_GTU;\n+ } else {\n+ break;\n+ }\n+ /* fallthru */\n+\n case TCG_COND_GTU:\n case TCG_COND_GT:\n- do_greater:\n /* The result of a compare has CC=2 for GT and CC=3 unused.\n ADD LOGICAL WITH CARRY considers (CC & 2) the carry bit. */\n tgen_cmp(s, type, cond, c1, c2, c2const, true);\n@@ -1096,49 +1105,33 @@ static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond,\n tcg_out_insn(s, RRE, ALCGR, dest, dest);\n return;\n \n- case TCG_COND_GEU:\n- if (have_loc) {\n- goto do_loc;\n- }\n- do_geu:\n- /* We need \"real\" carry semantics, so use SUBTRACT LOGICAL\n- instead of COMPARE LOGICAL. This may need an extra move. */\n- if (c2const) {\n- tcg_out_mov(s, type, TCG_TMP0, c1);\n- if (type == TCG_TYPE_I32) {\n- tcg_out_insn(s, RIL, SLFI, TCG_TMP0, c2);\n- } else {\n- tcg_out_insn(s, RIL, SLGFI, TCG_TMP0, c2);\n- }\n- } else if (s390_facilities & FACILITY_DISTINCT_OPS) {\n- if (type == TCG_TYPE_I32) {\n- tcg_out_insn(s, RRF, SLRK, TCG_TMP0, c1, c2);\n- } else {\n- tcg_out_insn(s, RRF, SLGRK, TCG_TMP0, c1, c2);\n- }\n+ case TCG_COND_EQ:\n+ /* X == 0 is X <= 0. */\n+ if (c2const && c2 == 0) {\n+ cond = TCG_COND_LEU;\n } else {\n- tcg_out_mov(s, type, TCG_TMP0, c1);\n- if (type == TCG_TYPE_I32) {\n- tcg_out_insn(s, RR, SLR, TCG_TMP0, c2);\n- } else {\n- tcg_out_insn(s, RRE, SLGR, TCG_TMP0, c2);\n- }\n+ break;\n }\n- tcg_out_movi(s, TCG_TYPE_I64, dest, 0);\n- tcg_out_insn(s, RRE, ALCGR, dest, dest);\n- return;\n+ /* fallthru */\n \n case TCG_COND_LEU:\n- if (have_loc) {\n- goto do_loc;\n- }\n- /* fallthru */\n+ case TCG_COND_LE:\n+ /* As above, but we're looking for borrow, or !carry.\n+ The second insn computes d - d - borrow, or -1 for true\n+ and 0 for false. So we must mask to 1 bit afterward. */\n+ tgen_cmp(s, type, cond, c1, c2, c2const, true);\n+ tcg_out_insn(s, RRE, SLBGR, dest, dest);\n+ tgen_andi(s, type, dest, 1);\n+ return;\n+\n+ case TCG_COND_GEU:\n case TCG_COND_LTU:\n case TCG_COND_LT:\n- /* Swap operands so that we can use GEU/GTU/GT. */\n+ case TCG_COND_GE:\n+ /* Swap operands so that we can use LEU/GTU/GT/LE. */\n if (c2const) {\n if (have_loc) {\n- goto do_loc;\n+ break;\n }\n tcg_out_movi(s, type, TCG_TMP0, c2);\n c2 = c1;\n@@ -1149,51 +1142,25 @@ static void tgen_setcond(TCGContext *s, TCGType type, TCGCond cond,\n c1 = c2;\n c2 = t;\n }\n- if (cond == TCG_COND_LEU) {\n- goto do_geu;\n- }\n cond = tcg_swap_cond(cond);\n- goto do_greater;\n-\n- case TCG_COND_NE:\n- /* X != 0 is X > 0. */\n- if (c2const && c2 == 0) {\n- cond = TCG_COND_GTU;\n- goto do_greater;\n- }\n- break;\n-\n- case TCG_COND_EQ:\n- if (have_loc) {\n- goto do_loc;\n- }\n- /* X == 0 is X <= 0 is 0 >= X. */\n- if (c2const && c2 == 0) {\n- tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 0);\n- c2 = c1;\n- c2const = 0;\n- c1 = TCG_TMP0;\n- goto do_geu;\n- }\n- break;\n+ goto restart;\n \n default:\n- break;\n+ g_assert_not_reached();\n }\n \n cc = tgen_cmp(s, type, cond, c1, c2, c2const, false);\n- /* Emit: d = 1; if (cc) goto over; d = 0; over: */\n- tcg_out_movi(s, type, dest, 1);\n- tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1);\n- tcg_out_movi(s, type, dest, 0);\n- return;\n-\n- do_loc:\n- cc = tgen_cmp(s, type, cond, c1, c2, c2const, false);\n- /* Emit: d = 0, t = 1, d = (cc ? t : d). */\n- tcg_out_movi(s, TCG_TYPE_I64, dest, 0);\n- tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 1);\n- tcg_out_insn(s, RRF, LOCGR, dest, TCG_TMP0, cc);\n+ if (have_loc) {\n+ /* Emit: d = 0, t = 1, d = (cc ? t : d). */\n+ tcg_out_movi(s, TCG_TYPE_I64, dest, 0);\n+ tcg_out_movi(s, TCG_TYPE_I64, TCG_TMP0, 1);\n+ tcg_out_insn(s, RRF, LOCGR, dest, TCG_TMP0, cc);\n+ } else {\n+ /* Emit: d = 1; if (cc) goto over; d = 0; over: */\n+ tcg_out_movi(s, type, dest, 1);\n+ tcg_out_insn(s, RI, BRC, cc, (4 + 4) >> 1);\n+ tcg_out_movi(s, type, dest, 0);\n+ }\n }\n \n static void tgen_movcond(TCGContext *s, TCGType type, TCGCond c, TCGReg dest,\n", "prefixes": [ "PULL", "14/14" ] }