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Signed-off-by: Richard Henderson --- host/include/i386/host/cpuinfo.h | 1 + include/qemu/cpuid.h | 3 +++ util/cpuinfo-i386.c | 1 + 3 files changed, 5 insertions(+) diff --git a/host/include/i386/host/cpuinfo.h b/host/include/i386/host/cpui= nfo.h index 9541a64da6..93d029d499 100644 --- a/host/include/i386/host/cpuinfo.h +++ b/host/include/i386/host/cpuinfo.h @@ -27,6 +27,7 @@ #define CPUINFO_ATOMIC_VMOVDQU (1u << 17) #define CPUINFO_AES (1u << 18) #define CPUINFO_PCLMUL (1u << 19) +#define CPUINFO_GFNI (1u << 20) =20 /* Initialized with a constructor. */ extern unsigned cpuinfo; diff --git a/include/qemu/cpuid.h b/include/qemu/cpuid.h index b11161555b..f8351b80b0 100644 --- a/include/qemu/cpuid.h +++ b/include/qemu/cpuid.h @@ -68,6 +68,9 @@ #ifndef bit_AVX512VBMI2 #define bit_AVX512VBMI2 (1 << 6) #endif +#ifndef bit_GNFI +#define bit_GNFI (1 << 8) +#endif =20 /* Leaf 0x80000001, %ecx */ #ifndef bit_LZCNT diff --git a/util/cpuinfo-i386.c b/util/cpuinfo-i386.c index c8c8a1b370..f4c5b6ff40 100644 --- a/util/cpuinfo-i386.c +++ b/util/cpuinfo-i386.c @@ -50,6 +50,7 @@ unsigned __attribute__((constructor)) cpuinfo_init(void) if ((bv & 6) =3D=3D 6) { info |=3D CPUINFO_AVX1; info |=3D (b7 & bit_AVX2 ? CPUINFO_AVX2 : 0); + info |=3D (c7 & bit_GFNI ? CPUINFO_GFNI : 0); =20 if ((bv & 0xe0) =3D=3D 0xe0) { info |=3D (b7 & bit_AVX512F ? 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Signed-off-by: Richard Henderson --- tcg/i386/tcg-target-opc.h.inc | 1 + tcg/i386/tcg-target.c.inc | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/tcg/i386/tcg-target-opc.h.inc b/tcg/i386/tcg-target-opc.h.inc index 8cc0dbaeaf..8a5cb34dbe 100644 --- a/tcg/i386/tcg-target-opc.h.inc +++ b/tcg/i386/tcg-target-opc.h.inc @@ -35,3 +35,4 @@ DEF(x86_punpckh_vec, 1, 2, 0, TCG_OPF_VECTOR) DEF(x86_vpshldi_vec, 1, 2, 1, TCG_OPF_VECTOR) DEF(x86_vpshldv_vec, 1, 3, 0, TCG_OPF_VECTOR) DEF(x86_vpshrdv_vec, 1, 3, 0, TCG_OPF_VECTOR) +DEF(x86_vgf2p8affineqb_vec, 1, 2, 1, TCG_OPF_VECTOR) diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 088c6c9264..9dd588fc41 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -451,6 +451,7 @@ static bool tcg_target_const_match(int64_t val, int ct, #define OPC_VPBROADCASTW (0x79 | P_EXT38 | P_DATA16) #define OPC_VPBROADCASTD (0x58 | P_EXT38 | P_DATA16) #define OPC_VPBROADCASTQ (0x59 | P_EXT38 | P_DATA16) +#define OPC_VGF2P8AFFINEQB (0xce | P_EXT3A | P_DATA16 | P_VEXW) #define OPC_VPMOVM2B (0x28 | P_EXT38 | P_SIMDF3 | P_EVEX) #define OPC_VPMOVM2W (0x28 | P_EXT38 | P_SIMDF3 | P_VEXW | P_EVEX) #define OPC_VPMOVM2D (0x38 | P_EXT38 | P_SIMDF3 | P_EVEX) @@ -4084,6 +4085,10 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode = opc, insn =3D vpshldi_insn[vece]; sub =3D args[3]; goto gen_simd_imm8; + case INDEX_op_x86_vgf2p8affineqb_vec: + insn =3D OPC_VGF2P8AFFINEQB; + sub =3D args[3]; + goto gen_simd_imm8; =20 case INDEX_op_not_vec: insn =3D OPC_VPTERNLOGQ; @@ -4188,6 +4193,7 @@ tcg_target_op_def(TCGOpcode op, TCGType type, unsigne= d flags) case INDEX_op_x86_punpckl_vec: case INDEX_op_x86_punpckh_vec: case INDEX_op_x86_vpshldi_vec: + case INDEX_op_x86_vgf2p8affineqb_vec: #if TCG_TARGET_REG_BITS =3D=3D 32 case INDEX_op_dup2_vec: #endif --=20 2.43.0 From nobody Sat Nov 15 05:33:50 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1754783010; cv=none; d=zohomail.com; s=zohoarc; b=CbHgehKJGogIxaQAxVU0njZaiFUDtqDoyYrRJpygPMrZOn2utlz4FSVSeVs1XDZCQku+Dsv96L6RlP4tKEZ7sXhdmRn7RYIqMrl8Nw0CfvkRZHcUFG748sPyHmGS7Tl/G79FE4dpm5S1U9LJ4Hci0AumqjdbdUisQemlpt+w6Wc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1754783010; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=N4OkU+DgDKGb66i12ye1eGOR4zW3QJF0mGHVePO3CKA=; b=D6/PYqPwgbekn0WLwyEJbbgiZ2DpKH/PYG7Sl3Y2kTaXXDHzzRHjHn6ZSjpTSRzuRlINQjA/WeVHXv+7fa1oJE2jL+E5nkvcHB61qtTUa1PraU7rkcVibCf5YNyNEaqQUQ5yLRcpFKt/DoLVGjArMfRnFfBOI9kWuW93TSS3Uw8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1754783010136397.4063701413513; Sat, 9 Aug 2025 16:43:30 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uktCt-0005jh-79; Sat, 09 Aug 2025 19:42:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uktCr-0005j8-BE for qemu-devel@nongnu.org; Sat, 09 Aug 2025 19:42:33 -0400 Received: from mail-qt1-x832.google.com ([2607:f8b0:4864:20::832]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1uktCp-0005hZ-NV for qemu-devel@nongnu.org; Sat, 09 Aug 2025 19:42:33 -0400 Received: by mail-qt1-x832.google.com with SMTP id d75a77b69052e-4b08c56d838so41746201cf.0 for ; Sat, 09 Aug 2025 16:42:31 -0700 (PDT) Received: from stoup.. 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Logic courtesy of Andi Kleen : https://gcc.gnu.org/pipermail/gcc-patches/2025-August/691624.html Signed-off-by: Richard Henderson --- tcg/i386/tcg-target.c.inc | 75 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 71 insertions(+), 4 deletions(-) diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 9dd588fc41..fb76724941 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -4342,12 +4342,46 @@ int tcg_can_emit_vec_op(TCGOpcode opc, TCGType type= , unsigned vece) } } =20 +static void gen_vgf2p8affineqb0(TCGType type, TCGv_vec v0, + TCGv_vec v1, uint64_t matrix) +{ + vec_gen_4(INDEX_op_x86_vgf2p8affineqb_vec, type, MO_8, + tcgv_vec_arg(v0), tcgv_vec_arg(v1), + tcgv_vec_arg(tcg_constant_vec(type, MO_64, matrix)), 0); +} + static void expand_vec_shi(TCGType type, unsigned vece, bool right, TCGv_vec v0, TCGv_vec v1, TCGArg imm) { + static const uint64_t gf2_shi[2][8] =3D { + /* left shift */ + { 0, + 0x0001020408102040ull, + 0x0000010204081020ull, + 0x0000000102040810ull, + 0x0000000001020408ull, + 0x0000000000010204ull, + 0x0000000000000102ull, + 0x0000000000000001ull }, + /* right shift */ + { 0, + 0x0204081020408000ull, + 0x0408102040800000ull, + 0x0810204080000000ull, + 0x1020408000000000ull, + 0x2040800000000000ull, + 0x4080000000000000ull, + 0x8000000000000000ull } + }; uint8_t mask; =20 tcg_debug_assert(vece =3D=3D MO_8); + + if (cpuinfo & CPUINFO_GFNI) { + gen_vgf2p8affineqb0(type, v0, v1, gf2_shi[right][imm]); + return; + } + if (right) { mask =3D 0xff >> imm; tcg_gen_shri_vec(MO_16, v0, v1, imm); @@ -4361,10 +4395,25 @@ static void expand_vec_shi(TCGType type, unsigned v= ece, bool right, static void expand_vec_sari(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec v1, TCGArg imm) { + static const uint64_t gf2_sar[8] =3D { + 0, + 0x0204081020408080ull, + 0x0408102040808080ull, + 0x0810204080808080ull, + 0x1020408080808080ull, + 0x2040808080808080ull, + 0x4080808080808080ull, + 0x8080808080808080ull, + }; TCGv_vec t1, t2; =20 switch (vece) { case MO_8: + if (cpuinfo & CPUINFO_GFNI) { + gen_vgf2p8affineqb0(type, v0, v1, gf2_sar[imm]); + break; + } + /* Unpack to 16-bit, shift, and repack. */ t1 =3D tcg_temp_new_vec(type); t2 =3D tcg_temp_new_vec(type); @@ -4416,12 +4465,30 @@ static void expand_vec_sari(TCGType type, unsigned = vece, static void expand_vec_rotli(TCGType type, unsigned vece, TCGv_vec v0, TCGv_vec v1, TCGArg imm) { + static const uint64_t gf2_rol[8] =3D { + 0, + 0x8001020408102040ull, + 0x4080010204081020ull, + 0x2040800102040810ull, + 0x1020408001020408ull, + 0x0810204080010204ull, + 0x0408102040800102ull, + 0x0204081020408001ull, + }; TCGv_vec t; =20 - if (vece !=3D MO_8 && have_avx512vbmi2) { - vec_gen_4(INDEX_op_x86_vpshldi_vec, type, vece, - tcgv_vec_arg(v0), tcgv_vec_arg(v1), tcgv_vec_arg(v1), im= m); - return; + if (vece =3D=3D MO_8) { + if (cpuinfo & CPUINFO_GFNI) { + gen_vgf2p8affineqb0(type, v0, v1, gf2_rol[imm]); + return; + } + } else { + if (have_avx512vbmi2) { + vec_gen_4(INDEX_op_x86_vpshldi_vec, type, vece, + tcgv_vec_arg(v0), tcgv_vec_arg(v1), + tcgv_vec_arg(v1), imm); + return; + } } =20 t =3D tcg_temp_new_vec(type); --=20 2.43.0