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GET /api/patches/2216101/?format=api
{ "id": 2216101, "url": "http://patchwork.ozlabs.org/api/patches/2216101/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260325194511.1980746-1-pengxuan.zheng@oss.qualcomm.com/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/projects/17/?format=api", "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": "<20260325194511.1980746-1-pengxuan.zheng@oss.qualcomm.com>", "list_archive_url": null, "date": "2026-03-25T19:45:11", "name": "aarch64: Add vec_packs_float pattern [PR123748]", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "59f2d9efce0f3d964eb50ac74929ee7dd6da4d0c", "submitter": { "id": 92245, "url": "http://patchwork.ozlabs.org/api/people/92245/?format=api", "name": "Pengxuan Zheng", "email": "pengxuan.zheng@oss.qualcomm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260325194511.1980746-1-pengxuan.zheng@oss.qualcomm.com/mbox/", "series": [ { "id": 497506, "url": "http://patchwork.ozlabs.org/api/series/497506/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=497506", "date": "2026-03-25T19:45:11", "name": "aarch64: Add vec_packs_float pattern [PR123748]", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497506/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2216101/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2216101/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "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": 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<pengxuan.zheng@oss.qualcomm.com>", "To": "gcc-patches@gcc.gnu.org", "Subject": "[PATCH] aarch64: Add vec_packs_float pattern [PR123748]", "Date": "Wed, 25 Mar 2026 12:45:11 -0700", "Message-Id": "<20260325194511.1980746-1-pengxuan.zheng@oss.qualcomm.com>", "X-Mailer": "git-send-email 2.34.1", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Authority-Analysis": "v=2.4 cv=fOk0HJae c=1 sm=1 tr=0 ts=69c43b4e cx=c_pps\n a=SvEPeNj+VMjHSW//kvnxuw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17\n a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22\n a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8\n a=pazKTHcq6bOorXXv98wA:9 a=Kq8ClHjjuc5pcCNDwlU0:22", "X-Proofpoint-GUID": "aWEV9RmV5dyQsjFnDIwgTtxj0UV9W9qO", "X-Proofpoint-ORIG-GUID": "aWEV9RmV5dyQsjFnDIwgTtxj0UV9W9qO", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwMzI1MDE0NSBTYWx0ZWRfX0znsV//0Q0Gg\n Nd0NlzRojuxxJdXDOWA+U0oEz58gzSWn+bfhuShwDNwD6F6492ms3NhOB2tjAvvf6eOK1Dwbu/z\n 8qFNT3lhBeU0FqILmHNmNwlvyngN8AeYuA+/G+ZpSGXfRTQO0zOpQN+MjJ5+ncxaQQCjd2nBZZ2\n 9bnf8T5ifG2y9JxnR+yiQGm3UaFfo9WTo8IL7kW5KkbD/NWTcIAx0Xvfo+K4f3paQ6LgYcTNa38\n vLd29FJAkNIbj+Hu+o0kxSKos9slV2GddqEIr+u/4GAzCvATsQHQg65XNNMYWzlYy2a1IA7SQpM\n ZF2a/RKdAUCdug/9l7U1A3bGnw56wMaU9YJ1q0/SZESc4R0/wtxiI8LcMAkztoECyWOTBv/Ggqo\n cK7Q8kr7or70Va5Ti5zfmpGS0vMR/THMtqPJvuEK1TsYHuYgh0O5ktsWq68XJ4M68Urf13YKRq+\n 4L4sAQScGweZZ2istIQ==", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-03-25_05,2026-03-24_01,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n malwarescore=0 bulkscore=0 priorityscore=1501 clxscore=1015 adultscore=0\n lowpriorityscore=0 phishscore=0 spamscore=0 suspectscore=0 impostorscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603250145", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "This enables the vectorizer to vectorize conversion from long to float for\naarch64 target.\n\nBootstrapped and tested on aarch64_linux_gnu.\n\n\tPR target/123748\n\ngcc/ChangeLog:\n\n\t* config/aarch64/aarch64-simd.md (vec_packs_float_v2di): New pattern.\n\ngcc/testsuite/ChangeLog:\n\n\t* gcc.target/aarch64/pr123748.c: New test.\n\nSigned-off-by: Pengxuan Zheng <pengxuan.zheng@oss.qualcomm.com>\n---\n gcc/config/aarch64/aarch64-simd.md | 27 +++++++++++++++++++++\n gcc/testsuite/gcc.target/aarch64/pr123748.c | 13 ++++++++++\n 2 files changed, 40 insertions(+)\n create mode 100644 gcc/testsuite/gcc.target/aarch64/pr123748.c", "diff": "diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md\nindex c314e85927d..b4f98e45a8e 100644\n--- a/gcc/config/aarch64/aarch64-simd.md\n+++ b/gcc/config/aarch64/aarch64-simd.md\n@@ -3203,6 +3203,33 @@ (define_insn \"<FCVT_FIXED2F:fcvt_fixed_insn><VDQ_HSDI:mode>3\"\n [(set_attr \"type\" \"neon_int_to_fp_<VDQ_HSDI:stype><q>\")]\n )\n \n+(define_expand \"vec_packs_float_v2di\"\n+ [(set (match_operand:V4SF 0 \"register_operand\" \"=w\")\n+\t(vec_concat:V4SF\n+\t (float:V2SF (match_operand:V2DI 1 \"register_operand\" \"w\"))\n+\t (float:V2SF (match_operand:V2DI 2 \"register_operand\" \"w\"))))]\n+ \"TARGET_SIMD && flag_unsafe_math_optimizations\"\n+ {\n+ rtx tmp = gen_reg_rtx (V2DFmode);\n+ rtx tmp1 = gen_reg_rtx (V2DFmode);\n+ rtx tmp2 = gen_reg_rtx (V2SFmode);\n+ rtx tmp3 = gen_reg_rtx (V2SFmode);\n+ emit_insn (gen_floatv2div2df2 (tmp, operands[1]));\n+ emit_insn (gen_floatv2div2df2 (tmp1, operands[2]));\n+ emit_insn (gen_truncv2dfv2sf2 (tmp2, tmp));\n+ emit_insn (gen_truncv2dfv2sf2 (tmp3, tmp1));\n+ rtx tmp4 = gen_reg_rtx (V2DFmode);\n+ if (BYTES_BIG_ENDIAN)\n+ emit_insn (gen_aarch64_zip1v2df_low (tmp4, gen_lowpart (DFmode, tmp3),\n+\t\t\t\t\t gen_lowpart (DFmode, tmp2)));\n+ else\n+ emit_insn (gen_aarch64_zip1v2df_low (tmp4, gen_lowpart (DFmode, tmp2),\n+\t\t\t\t\t gen_lowpart (DFmode, tmp3)));\n+ emit_move_insn (operands[0], gen_lowpart (V4SFmode, tmp4));\n+ DONE;\n+ }\n+)\n+\n ;; ??? Note that the vectorizer usage of the vec_unpacks_[lo/hi] patterns\n ;; is inconsistent with vector ordering elsewhere in the compiler, in that\n ;; the meaning of HI and LO changes depending on the target endianness.\ndiff --git a/gcc/testsuite/gcc.target/aarch64/pr123748.c b/gcc/testsuite/gcc.target/aarch64/pr123748.c\nnew file mode 100644\nindex 00000000000..8ba290cf12d\n--- /dev/null\n+++ b/gcc/testsuite/gcc.target/aarch64/pr123748.c\n@@ -0,0 +1,13 @@\n+/* { dg-do compile } */\n+/* { dg-options \"-Ofast\" } */\n+\n+void\n+f (float *__restrict f, long *__restrict l)\n+{\n+ for (int i = 0; i < 128; i++)\n+ f[i] = l[i];\n+}\n+\n+/* { dg-final { scan-assembler-times {scvtf\\t} 2 } } */\n+/* { dg-final { scan-assembler-times {fcvtn\\t} 2 } } */\n+/* { dg-final { scan-assembler-times {zip1\\t} 1 } } */\n", "prefixes": [] }