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[8.43.85.97]) by mx.google.com with ESMTPS id gs19-20020a1709072d1300b00783d5a93880si132768ejc.503.2022.10.13.09.52.14 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Oct 2022 09:52:15 -0700 (PDT) Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; Authentication-Results: mx.google.com; dkim=pass header.i=@gcc.gnu.org header.s=default header.b=ZJsUSY52; spf=pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) smtp.mailfrom="gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gnu.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id BDB2B3857C42 for ; Thu, 13 Oct 2022 16:52:13 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BDB2B3857C42 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665679933; bh=X0UFflwrySd4OKVzmLvkDQuF0zulEsj1pqoaD6M3GjQ=; h=Date:To:Subject:References:In-Reply-To:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=ZJsUSY52C1x6XW6uCPljVe757HzUV2gFHq/V+EMHE7AT1OZc7jyCZ3+SXQR4fcJvY 2e7WQAJOpnq46Mvg9mE9M52OFuE78UwUFcFDHQRtgLPlTzJTK4KqAgYPeMRPz8pTpJ mRu8dh1krCzAovAW9LhMkRD/TWnKAYdIp9q130kQ= X-Original-To: gcc-patches@gcc.gnu.org Delivered-To: gcc-patches@gcc.gnu.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 79A4B3858C56 for ; Thu, 13 Oct 2022 16:51:06 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 79A4B3858C56 Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-631-kRzSU-H3PDCziG19V8BhpQ-1; Thu, 13 Oct 2022 12:51:02 -0400 X-MC-Unique: kRzSU-H3PDCziG19V8BhpQ-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 29BF32A59540; Thu, 13 Oct 2022 16:51:02 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.192.55]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 6CE8840C94F2; Thu, 13 Oct 2022 16:51:01 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.17.1/8.17.1) with ESMTPS id 29DGorcR655049 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Thu, 13 Oct 2022 18:50:53 +0200 Received: (from jakub@localhost) by tucnak.zalov.cz (8.17.1/8.17.1/Submit) id 29DGoqub655048; Thu, 13 Oct 2022 18:50:52 +0200 Date: Thu, 13 Oct 2022 18:50:51 +0200 To: Jason Merrill , "Joseph S. Myers" Subject: [PATCH] middle-end, c++, i386, libgcc, v2: std::bfloat16_t and __bf16 arithmetic support Message-ID: References: <37522634-319a-b471-aa35-87e711b0479e@redhat.com> <55062a15-79a1-f8cf-ed20-25ca8ff42abe@redhat.com> <95f2abba-afb4-bb73-a9f0-b1578b28713a@redhat.com> MIME-Version: 1.0 In-Reply-To: <95f2abba-afb4-bb73-a9f0-b1578b28713a@redhat.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Jakub Jelinek via Gcc-patches From: Jakub Jelinek Reply-To: Jakub Jelinek Cc: Richard Biener , gcc-patches@gcc.gnu.org Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1746592003833397387?= X-GMAIL-MSGID: =?utf-8?q?1746592003833397387?= Hi! On Wed, Oct 05, 2022 at 04:02:25PM -0400, Jason Merrill wrote: > > As I wrote earlier, I think we need at least one, __builtin_nans variant > > which would be used in libstdc++ > > std::numeric_limits::signaling_NaN() implementation. > > I think > > std::numeric_limits::infinity() can be implemented as > > return (__bf16) __builtin_huge_valf (); > > and similarly > > std::numeric_limits::quiet_NaN() as > > return (__bf16) __builtin_nanf (""); > > but > > return (__bf16) __builtin_nansf (""); > > would loose the signaling NaN on the conversion and raise exception, > > and as the method is constexpr, > > union { unsigned short a; __bf16 b; } u = { 0x7f81 }; > > return u.b; > > wouldn't work. I can certainly restrict the builtins to the single > > one, but wonder whether the suffix for that builtin shouldn't be chosen > > such that eventually we could add more builtins if we need to > > and don't run into the log with bf16 suffix vs. logb with f16 suffix > > ambiguity. > > As you said, most of the libstdc++ overloads for std::bfloat16_t then > > can use float builtins or library calls under the hood, but std::nextafter > > is another case where I think we'll need to have something bfloat16_t > > specific, because float ulp isn't bfloat16_t ulp, the latter is much larger. > > Makes sense. So, this updated version of the patch adds just a single __builtin_nansf16b builtin (or do you want __builtin_nansbf16?). > > > Based on what Joseph wrote, I'll add bf16/BF16 suffix support for C too > > in the next iteration (always with pedwarn in that case). And implements bf16/BF16 suffixes for C too. > > I'm afraid too many places rely on all modes of a certain class to be > > visible when walking from "narrowest" to "widest" mode, say > > FOR_EACH_MODE_IN_CLASS/FOR_EACH_MODE/FOR_EACH_MODE_UNTIL/FOR_EACH_WIDER_MODE > > etc. wouldn't work at all if GET_MODE_WIDER_MODE (BFmode) == SFmode > > && GET_MODE_WIDER_MODE (HFmode) == SFmode. > > Yes, it seems they need to change now that their assumptions have been > violated. I suppose FOR_EACH_MODE_IN_CLASS would need to change to not use > get_wider, and users of FOR_EACH_MODE/FOR_EACH_MODE_UNTIL need to decide > whether they want an iteration that uses get_wider (likely with a new name) > or not. And now that the GET_MODE_WIDER_MODE vs. GET_MODE_NEXT_MODE patch is in, is updated on top of those changes. So far lightly tested on x86_64-linux, ok for trunk if it passes full bootstrap/regtest on both x86_64-linux and i686-linux? 2022-10-13 Jakub Jelinek gcc/ * tree-core.h (enum tree_index): Add TI_BFLOAT16_TYPE. * tree.h (bfloat16_type_node): Define. * tree.cc (excess_precision_type): Promote bfloat16_type_mode like float16_type_mode. (build_common_tree_nodes): Initialize bfloat16_type_node if BFmode is supported. * expmed.h (maybe_expand_shift): Declare. * expmed.cc (maybe_expand_shift): No longer static. * expr.cc (convert_mode_scalar): Don't ICE on BF -> HF or HF -> BF conversions. If there is no optab, handle BF -> {DF,XF,TF,HF} conversions as separate BF -> SF -> {DF,XF,TF,HF} conversions, add -ffast-math generic implementation for BF -> SF and SF -> BF conversions. * builtin-types.def (BT_BFLOAT16, BT_FN_BFLOAT16_CONST_STRING): New. * builtins.def (BUILT_IN_NANSF16B): New builtin. * fold-const-call.cc (fold_const_call): Handle CFN_BUILT_IN_NANSF16B. * config/i386/i386.cc (classify_argument): Handle E_BCmode. (ix86_libgcc_floating_mode_supported_p): Also return true for BFmode for -msse2. (ix86_mangle_type): Mangle BFmode as DF16b. (ix86_invalid_conversion, ix86_invalid_unary_op, ix86_invalid_binary_op): Remove. (TARGET_INVALID_CONVERSION, TARGET_INVALID_UNARY_OP, TARGET_INVALID_BINARY_OP): Don't redefine. * config/i386/i386-builtins.cc (ix86_bf16_type_node): Remove. (ix86_register_bf16_builtin_type): Use bfloat16_type_node rather than ix86_bf16_type_node, only create it if still NULL. * config/i386/i386-builtin-types.def (BFLOAT16): Likewise. * config/i386/i386.md (cbranchbf4, cstorebf4): New expanders. gcc/c-family/ * c-cppbuiltin.cc (c_cpp_builtins): If bfloat16_type_node, predefine __BFLT16_*__ macros and for C++23 also __STDCPP_BFLOAT16_T__. Predefine bfloat16_type_node related macros for -fbuilding-libgcc. * c-lex.cc (interpret_float): Handle CPP_N_BFLOAT16. gcc/c/ * c-typeck.cc (convert_arguments): Don't promote __bf16 to double. gcc/cp/ * cp-tree.h (extended_float_type_p): Return true for bfloat16_type_node. * typeck.cc (cp_compare_floating_point_conversion_ranks): Set extended{1,2} if mv{1,2} is bfloat16_type_node. Adjust comment. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_bfloat16, check_effective_target_bfloat16_runtime, add_options_for_bfloat16): New. * gcc.dg/torture/bfloat16-basic.c: New test. * gcc.dg/torture/bfloat16-builtin.c: New test. * gcc.dg/torture/bfloat16-builtin-issignaling-1.c: New test. * gcc.dg/torture/bfloat16-complex.c: New test. * gcc.dg/torture/builtin-issignaling-1.c: Allow to be includable from bfloat16-builtin-issignaling-1.c. * gcc.dg/torture/floatn-basic.h: Allow to be includable from bfloat16-basic.c. * gcc.target/i386/vect-bfloat16-typecheck_2.c: Adjust expected diagnostics. * gcc.target/i386/sse2-bfloat16-scalar-typecheck.c: Likewise. * gcc.target/i386/vect-bfloat16-typecheck_1.c: Likewise. * g++.target/i386/bfloat_cpp_typecheck.C: Likewise. libcpp/ * include/cpplib.h (CPP_N_BFLOAT16): Define. * expr.cc (interpret_float_suffix): Handle bf16 and BF16 suffixes for C++. libgcc/ * config/i386/t-softfp (softfp_extensions): Add bfsf. (softfp_truncations): Add tfbf xfbf dfbf sfbf hfbf. (CFLAGS-extendbfsf2.c, CFLAGS-truncsfbf2.c, CFLAGS-truncdfbf2.c, CFLAGS-truncxfbf2.c, CFLAGS-trunctfbf2.c, CFLAGS-trunchfbf2.c): Add -msse2. * config/i386/libgcc-glibc.ver (GCC_13.0.0): Export __extendbfsf2 and __trunc{s,d,x,t,h}fbf2. * config/i386/sfp-machine.h (_FP_NANSIGN_B): Define. * config/i386/64/sfp-machine.h (_FP_NANFRAC_B): Define. * config/i386/32/sfp-machine.h (_FP_NANFRAC_B): Define. * soft-fp/brain.h: New file. * soft-fp/truncsfbf2.c: New file. * soft-fp/truncdfbf2.c: New file. * soft-fp/truncxfbf2.c: New file. * soft-fp/trunctfbf2.c: New file. * soft-fp/trunchfbf2.c: New file. * soft-fp/truncbfhf2.c: New file. * soft-fp/extendbfsf2.c: New file. libiberty/ * cp-demangle.h (D_BUILTIN_TYPE_COUNT): Increment. * cp-demangle.c (cplus_demangle_builtin_types): Add std::bfloat16_t entry. (cplus_demangle_type): Demangle DF16b. * testsuite/demangle-expected (_Z3xxxDF16b): New test. Jakub --- gcc/tree-core.h.jj 2022-10-10 09:31:57.683981308 +0200 +++ gcc/tree-core.h 2022-10-13 16:57:08.953775013 +0200 @@ -665,6 +665,9 @@ enum tree_index { TI_DOUBLE_TYPE, TI_LONG_DOUBLE_TYPE, + /* __bf16 type if supported (used in C++ as std::bfloat16_t). */ + TI_BFLOAT16_TYPE, + /* The _FloatN and _FloatNx types must be consecutive, and in the same sequence as the corresponding complex types, which must also be consecutive; _FloatN must come before _FloatNx; the order must --- gcc/tree.h.jj 2022-10-10 09:31:57.766980149 +0200 +++ gcc/tree.h 2022-10-13 17:22:14.728207071 +0200 @@ -4291,6 +4291,7 @@ tree_strip_any_location_wrapper (tree ex #define float_type_node global_trees[TI_FLOAT_TYPE] #define double_type_node global_trees[TI_DOUBLE_TYPE] #define long_double_type_node global_trees[TI_LONG_DOUBLE_TYPE] +#define bfloat16_type_node global_trees[TI_BFLOAT16_TYPE] /* Nodes for particular _FloatN and _FloatNx types in sequence. */ #define FLOATN_TYPE_NODE(IDX) global_trees[TI_FLOATN_TYPE_FIRST + (IDX)] --- gcc/tree.cc.jj 2022-10-10 09:31:57.743980470 +0200 +++ gcc/tree.cc 2022-10-13 16:57:08.956774972 +0200 @@ -7711,7 +7711,7 @@ excess_precision_type (tree type) = (flag_excess_precision == EXCESS_PRECISION_FAST ? EXCESS_PRECISION_TYPE_FAST : (flag_excess_precision == EXCESS_PRECISION_FLOAT16 - ? EXCESS_PRECISION_TYPE_FLOAT16 :EXCESS_PRECISION_TYPE_STANDARD)); + ? EXCESS_PRECISION_TYPE_FLOAT16 : EXCESS_PRECISION_TYPE_STANDARD)); enum flt_eval_method target_flt_eval_method = targetm.c.excess_precision (requested_type); @@ -7736,6 +7736,9 @@ excess_precision_type (tree type) machine_mode float16_type_mode = (float16_type_node ? TYPE_MODE (float16_type_node) : VOIDmode); + machine_mode bfloat16_type_mode = (bfloat16_type_node + ? TYPE_MODE (bfloat16_type_node) + : VOIDmode); machine_mode float_type_mode = TYPE_MODE (float_type_node); machine_mode double_type_mode = TYPE_MODE (double_type_node); @@ -7747,16 +7750,19 @@ excess_precision_type (tree type) switch (target_flt_eval_method) { case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT: - if (type_mode == float16_type_mode) + if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode) return float_type_node; break; case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE: if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode || type_mode == float_type_mode) return double_type_node; break; case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE: if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode || type_mode == float_type_mode || type_mode == double_type_mode) return long_double_type_node; @@ -7774,16 +7780,19 @@ excess_precision_type (tree type) switch (target_flt_eval_method) { case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT: - if (type_mode == float16_type_mode) + if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode) return complex_float_type_node; break; case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE: if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode || type_mode == float_type_mode) return complex_double_type_node; break; case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE: if (type_mode == float16_type_mode + || type_mode == bfloat16_type_mode || type_mode == float_type_mode || type_mode == double_type_mode) return complex_long_double_type_node; @@ -9462,6 +9471,17 @@ build_common_tree_nodes (bool signed_cha SET_TYPE_MODE (FLOATN_NX_TYPE_NODE (i), mode); } float128t_type_node = float128_type_node; +#ifdef HAVE_BFmode + if (REAL_MODE_FORMAT (BFmode) == &arm_bfloat_half_format + && targetm.scalar_mode_supported_p (BFmode) + && targetm.libgcc_floating_mode_supported_p (BFmode)) + { + bfloat16_type_node = make_node (REAL_TYPE); + TYPE_PRECISION (bfloat16_type_node) = GET_MODE_PRECISION (BFmode); + layout_type (bfloat16_type_node); + SET_TYPE_MODE (bfloat16_type_node, BFmode); + } +#endif float_ptr_type_node = build_pointer_type (float_type_node); double_ptr_type_node = build_pointer_type (double_type_node); --- gcc/expmed.h.jj 2022-10-03 18:00:53.046735271 +0200 +++ gcc/expmed.h 2022-10-13 16:57:08.957774958 +0200 @@ -707,6 +707,8 @@ extern rtx expand_variable_shift (enum t rtx, tree, rtx, int); extern rtx expand_shift (enum tree_code, machine_mode, rtx, poly_int64, rtx, int); +extern rtx maybe_expand_shift (enum tree_code, machine_mode, rtx, int, rtx, + int); #ifdef GCC_OPTABS_H extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx, rtx, int, enum optab_methods = OPTAB_LIB_WIDEN); --- gcc/expmed.cc.jj 2022-10-13 16:22:17.755496384 +0200 +++ gcc/expmed.cc 2022-10-13 16:57:08.957774958 +0200 @@ -2705,7 +2705,7 @@ expand_shift (enum tree_code code, machi /* Likewise, but return 0 if that cannot be done. */ -static rtx +rtx maybe_expand_shift (enum tree_code code, machine_mode mode, rtx shifted, int amount, rtx target, int unsignedp) { --- gcc/expr.cc.jj 2022-10-06 17:43:47.941502119 +0200 +++ gcc/expr.cc 2022-10-13 16:57:09.022774066 +0200 @@ -344,7 +344,11 @@ convert_mode_scalar (rtx to, rtx from, i gcc_assert ((GET_MODE_PRECISION (from_mode) != GET_MODE_PRECISION (to_mode)) || (DECIMAL_FLOAT_MODE_P (from_mode) - != DECIMAL_FLOAT_MODE_P (to_mode))); + != DECIMAL_FLOAT_MODE_P (to_mode)) + || (REAL_MODE_FORMAT (from_mode) == &arm_bfloat_half_format + && REAL_MODE_FORMAT (to_mode) == &ieee_half_format) + || (REAL_MODE_FORMAT (to_mode) == &arm_bfloat_half_format + && REAL_MODE_FORMAT (from_mode) == &ieee_half_format)); if (GET_MODE_PRECISION (from_mode) == GET_MODE_PRECISION (to_mode)) /* Conversion between decimal float and binary float, same size. */ @@ -364,6 +368,150 @@ convert_mode_scalar (rtx to, rtx from, i return; } +#ifdef HAVE_SFmode + if (REAL_MODE_FORMAT (from_mode) == &arm_bfloat_half_format + && REAL_MODE_FORMAT (SFmode) == &ieee_single_format) + { + if (GET_MODE_PRECISION (to_mode) > GET_MODE_PRECISION (SFmode)) + { + /* To cut down on libgcc size, implement + BFmode -> {DF,XF,TF}mode conversions by + BFmode -> SFmode -> {DF,XF,TF}mode conversions. */ + rtx temp = gen_reg_rtx (SFmode); + convert_mode_scalar (temp, from, unsignedp); + convert_mode_scalar (to, temp, unsignedp); + return; + } + if (REAL_MODE_FORMAT (to_mode) == &ieee_half_format) + { + /* Similarly, implement BFmode -> HFmode as + BFmode -> SFmode -> HFmode conversion where SFmode + has superset of BFmode values. We don't need + to handle sNaNs by raising exception and turning + into into qNaN though, as that can be done in the + SFmode -> HFmode conversion too. */ + rtx temp = gen_reg_rtx (SFmode); + int save_flag_finite_math_only = flag_finite_math_only; + flag_finite_math_only = true; + convert_mode_scalar (temp, from, unsignedp); + flag_finite_math_only = save_flag_finite_math_only; + convert_mode_scalar (to, temp, unsignedp); + return; + } + if (to_mode == SFmode + && !HONOR_NANS (from_mode) + && !HONOR_NANS (to_mode) + && optimize_insn_for_speed_p ()) + { + /* If we don't expect sNaNs, for BFmode -> SFmode we can just + shift the bits up. */ + machine_mode fromi_mode, toi_mode; + if (int_mode_for_size (GET_MODE_BITSIZE (from_mode), + 0).exists (&fromi_mode) + && int_mode_for_size (GET_MODE_BITSIZE (to_mode), + 0).exists (&toi_mode)) + { + start_sequence (); + rtx fromi = lowpart_subreg (fromi_mode, from, from_mode); + rtx tof = NULL_RTX; + if (fromi) + { + rtx toi = gen_reg_rtx (toi_mode); + convert_mode_scalar (toi, fromi, 1); + toi + = maybe_expand_shift (LSHIFT_EXPR, toi_mode, toi, + GET_MODE_PRECISION (to_mode) + - GET_MODE_PRECISION (from_mode), + NULL_RTX, 1); + if (toi) + { + tof = lowpart_subreg (to_mode, toi, toi_mode); + if (tof) + emit_move_insn (to, tof); + } + } + insns = get_insns (); + end_sequence (); + if (tof) + { + emit_insn (insns); + return; + } + } + } + } + if (REAL_MODE_FORMAT (from_mode) == &ieee_single_format + && REAL_MODE_FORMAT (to_mode) == &arm_bfloat_half_format + && !HONOR_NANS (from_mode) + && !HONOR_NANS (to_mode) + && !flag_rounding_math + && optimize_insn_for_speed_p ()) + { + /* If we don't expect qNaNs nor sNaNs and can assume rounding + to nearest, we can expand the conversion inline as + (fromi + 0x7fff + ((fromi >> 16) & 1)) >> 16. */ + machine_mode fromi_mode, toi_mode; + if (int_mode_for_size (GET_MODE_BITSIZE (from_mode), + 0).exists (&fromi_mode) + && int_mode_for_size (GET_MODE_BITSIZE (to_mode), + 0).exists (&toi_mode)) + { + start_sequence (); + rtx fromi = lowpart_subreg (fromi_mode, from, from_mode); + rtx tof = NULL_RTX; + do + { + if (!fromi) + break; + int shift = (GET_MODE_PRECISION (from_mode) + - GET_MODE_PRECISION (to_mode)); + rtx temp1 + = maybe_expand_shift (RSHIFT_EXPR, fromi_mode, fromi, + shift, NULL_RTX, 1); + if (!temp1) + break; + rtx temp2 + = expand_binop (fromi_mode, and_optab, temp1, const1_rtx, + NULL_RTX, 1, OPTAB_DIRECT); + if (!temp2) + break; + rtx temp3 + = expand_binop (fromi_mode, add_optab, fromi, + gen_int_mode ((HOST_WIDE_INT_1U + << (shift - 1)) - 1, + fromi_mode), NULL_RTX, + 1, OPTAB_DIRECT); + if (!temp3) + break; + rtx temp4 + = expand_binop (fromi_mode, add_optab, temp3, temp2, + NULL_RTX, 1, OPTAB_DIRECT); + if (!temp4) + break; + rtx temp5 = maybe_expand_shift (RSHIFT_EXPR, fromi_mode, + temp4, shift, NULL_RTX, 1); + if (!temp5) + break; + rtx temp6 = lowpart_subreg (toi_mode, temp5, fromi_mode); + if (!temp6) + break; + tof = lowpart_subreg (to_mode, force_reg (toi_mode, temp6), + toi_mode); + if (tof) + emit_move_insn (to, tof); + } + while (0); + insns = get_insns (); + end_sequence (); + if (tof) + { + emit_insn (insns); + return; + } + } + } +#endif + /* Otherwise use a libcall. */ libcall = convert_optab_libfunc (tab, to_mode, from_mode); --- gcc/builtin-types.def.jj 2022-10-03 18:00:52.658740505 +0200 +++ gcc/builtin-types.def 2022-10-13 17:09:52.930317869 +0200 @@ -82,6 +82,9 @@ DEF_PRIMITIVE_TYPE (BT_UNWINDWORD, (*lan DEF_PRIMITIVE_TYPE (BT_FLOAT, float_type_node) DEF_PRIMITIVE_TYPE (BT_DOUBLE, double_type_node) DEF_PRIMITIVE_TYPE (BT_LONGDOUBLE, long_double_type_node) +DEF_PRIMITIVE_TYPE (BT_BFLOAT16, (bfloat16_type_node + ? bfloat16_type_node + : error_mark_node)) DEF_PRIMITIVE_TYPE (BT_FLOAT16, (float16_type_node ? float16_type_node : error_mark_node)) @@ -264,6 +267,7 @@ DEF_FUNCTION_TYPE_1 (BT_FN_FLOAT_CONST_S DEF_FUNCTION_TYPE_1 (BT_FN_DOUBLE_CONST_STRING, BT_DOUBLE, BT_CONST_STRING) DEF_FUNCTION_TYPE_1 (BT_FN_LONGDOUBLE_CONST_STRING, BT_LONGDOUBLE, BT_CONST_STRING) +DEF_FUNCTION_TYPE_1 (BT_FN_BFLOAT16_CONST_STRING, BT_BFLOAT16, BT_CONST_STRING) DEF_FUNCTION_TYPE_1 (BT_FN_FLOAT16_CONST_STRING, BT_FLOAT16, BT_CONST_STRING) DEF_FUNCTION_TYPE_1 (BT_FN_FLOAT32_CONST_STRING, BT_FLOAT32, BT_CONST_STRING) DEF_FUNCTION_TYPE_1 (BT_FN_FLOAT64_CONST_STRING, BT_FLOAT64, BT_CONST_STRING) --- gcc/builtins.def.jj 2022-10-03 18:00:52.679740221 +0200 +++ gcc/builtins.def 2022-10-13 17:09:05.633962625 +0200 @@ -514,6 +514,7 @@ DEF_GCC_BUILTIN (BUILT_IN_NANSF, DEF_GCC_BUILTIN (BUILT_IN_NANSL, "nansl", BT_FN_LONGDOUBLE_CONST_STRING, ATTR_CONST_NOTHROW_NONNULL) DEF_GCC_FLOATN_NX_BUILTINS (BUILT_IN_NANS, "nans", NAN_TYPE, ATTR_CONST_NOTHROW_NONNULL) #undef NAN_TYPE +DEF_GCC_BUILTIN (BUILT_IN_NANSF16B, "nansf16b", BT_FN_BFLOAT16_CONST_STRING, ATTR_CONST_NOTHROW_NONNULL) DEF_GCC_BUILTIN (BUILT_IN_NANSD32, "nansd32", BT_FN_DFLOAT32_CONST_STRING, ATTR_CONST_NOTHROW_NONNULL) DEF_GCC_BUILTIN (BUILT_IN_NANSD64, "nansd64", BT_FN_DFLOAT64_CONST_STRING, ATTR_CONST_NOTHROW_NONNULL) DEF_GCC_BUILTIN (BUILT_IN_NANSD128, "nansd128", BT_FN_DFLOAT128_CONST_STRING, ATTR_CONST_NOTHROW_NONNULL) --- gcc/fold-const-call.cc.jj 2022-09-03 09:35:41.107989686 +0200 +++ gcc/fold-const-call.cc 2022-10-13 17:20:59.579229947 +0200 @@ -1301,6 +1301,7 @@ fold_const_call (combined_fn fn, tree ty CASE_CFN_NANS: CASE_FLT_FN_FLOATN_NX (CFN_BUILT_IN_NANS): + case CFN_BUILT_IN_NANSF16B: case CFN_BUILT_IN_NANSD32: case CFN_BUILT_IN_NANSD64: case CFN_BUILT_IN_NANSD128: --- gcc/config/i386/i386.cc.jj 2022-10-03 18:00:52.942736674 +0200 +++ gcc/config/i386/i386.cc 2022-10-13 16:57:09.092773105 +0200 @@ -2423,6 +2423,7 @@ classify_argument (machine_mode mode, co classes[1] = X86_64_SSEUP_CLASS; return 2; case E_HCmode: + case E_BCmode: classes[0] = X86_64_SSE_CLASS; if (!(bit_offset % 64)) return 1; @@ -22428,7 +22429,7 @@ ix86_libgcc_floating_mode_supported_p (s be defined by the C front-end for AVX512FP16 intrinsics. We will issue an error in ix86_expand_move for HFmode if AVX512FP16 isn't enabled. */ - return ((mode == HFmode && TARGET_SSE2) + return (((mode == HFmode || mode == BFmode) && TARGET_SSE2) ? true : default_libgcc_floating_mode_supported_p (mode)); } @@ -22731,7 +22732,7 @@ ix86_mangle_type (const_tree type) switch (TYPE_MODE (type)) { case E_BFmode: - return "u6__bf16"; + return "DF16b"; case E_HFmode: /* _Float16 is "DF16_". Align with clang's decision in https://reviews.llvm.org/D33719. */ @@ -22747,55 +22748,6 @@ ix86_mangle_type (const_tree type) } } -/* Return the diagnostic message string if conversion from FROMTYPE to - TOTYPE is not allowed, NULL otherwise. */ - -static const char * -ix86_invalid_conversion (const_tree fromtype, const_tree totype) -{ - if (element_mode (fromtype) != element_mode (totype)) - { - /* Do no allow conversions to/from BFmode scalar types. */ - if (TYPE_MODE (fromtype) == BFmode) - return N_("invalid conversion from type %<__bf16%>"); - if (TYPE_MODE (totype) == BFmode) - return N_("invalid conversion to type %<__bf16%>"); - } - - /* Conversion allowed. */ - return NULL; -} - -/* Return the diagnostic message string if the unary operation OP is - not permitted on TYPE, NULL otherwise. */ - -static const char * -ix86_invalid_unary_op (int op, const_tree type) -{ - /* Reject all single-operand operations on BFmode except for &. */ - if (element_mode (type) == BFmode && op != ADDR_EXPR) - return N_("operation not permitted on type %<__bf16%>"); - - /* Operation allowed. */ - return NULL; -} - -/* Return the diagnostic message string if the binary operation OP is - not permitted on TYPE1 and TYPE2, NULL otherwise. */ - -static const char * -ix86_invalid_binary_op (int op ATTRIBUTE_UNUSED, const_tree type1, - const_tree type2) -{ - /* Reject all 2-operand operations on BFmode. */ - if (element_mode (type1) == BFmode - || element_mode (type2) == BFmode) - return N_("operation not permitted on type %<__bf16%>"); - - /* Operation allowed. */ - return NULL; -} - static GTY(()) tree ix86_tls_stack_chk_guard_decl; static tree @@ -24853,15 +24805,6 @@ ix86_libgcc_floating_mode_supported_p #undef TARGET_MANGLE_TYPE #define TARGET_MANGLE_TYPE ix86_mangle_type -#undef TARGET_INVALID_CONVERSION -#define TARGET_INVALID_CONVERSION ix86_invalid_conversion - -#undef TARGET_INVALID_UNARY_OP -#define TARGET_INVALID_UNARY_OP ix86_invalid_unary_op - -#undef TARGET_INVALID_BINARY_OP -#define TARGET_INVALID_BINARY_OP ix86_invalid_binary_op - #undef TARGET_STACK_PROTECT_GUARD #define TARGET_STACK_PROTECT_GUARD ix86_stack_protect_guard --- gcc/config/i386/i386-builtins.cc.jj 2022-10-03 18:00:52.918736997 +0200 +++ gcc/config/i386/i386-builtins.cc 2022-10-13 16:57:09.119772735 +0200 @@ -126,7 +126,6 @@ BDESC_VERIFYS (IX86_BUILTIN_MAX, static GTY(()) tree ix86_builtin_type_tab[(int) IX86_BT_LAST_CPTR + 1]; tree ix86_float16_type_node = NULL_TREE; -tree ix86_bf16_type_node = NULL_TREE; tree ix86_bf16_ptr_type_node = NULL_TREE; /* Retrieve an element from the above table, building some of @@ -1372,16 +1371,18 @@ ix86_register_float16_builtin_type (void static void ix86_register_bf16_builtin_type (void) { - ix86_bf16_type_node = make_node (REAL_TYPE); - TYPE_PRECISION (ix86_bf16_type_node) = 16; - SET_TYPE_MODE (ix86_bf16_type_node, BFmode); - layout_type (ix86_bf16_type_node); + if (bfloat16_type_node == NULL_TREE) + { + bfloat16_type_node = make_node (REAL_TYPE); + TYPE_PRECISION (bfloat16_type_node) = 16; + SET_TYPE_MODE (bfloat16_type_node, BFmode); + layout_type (bfloat16_type_node); + } if (!maybe_get_identifier ("__bf16") && TARGET_SSE2) { - lang_hooks.types.register_builtin_type (ix86_bf16_type_node, - "__bf16"); - ix86_bf16_ptr_type_node = build_pointer_type (ix86_bf16_type_node); + lang_hooks.types.register_builtin_type (bfloat16_type_node, "__bf16"); + ix86_bf16_ptr_type_node = build_pointer_type (bfloat16_type_node); } } --- gcc/config/i386/i386-builtin-types.def.jj 2022-10-03 18:00:52.894737321 +0200 +++ gcc/config/i386/i386-builtin-types.def 2022-10-13 16:57:09.139772460 +0200 @@ -69,7 +69,7 @@ DEF_PRIMITIVE_TYPE (UINT16, short_unsign DEF_PRIMITIVE_TYPE (INT64, long_long_integer_type_node) DEF_PRIMITIVE_TYPE (UINT64, long_long_unsigned_type_node) DEF_PRIMITIVE_TYPE (FLOAT16, ix86_float16_type_node) -DEF_PRIMITIVE_TYPE (BFLOAT16, ix86_bf16_type_node) +DEF_PRIMITIVE_TYPE (BFLOAT16, bfloat16_type_node) DEF_PRIMITIVE_TYPE (FLOAT, float_type_node) DEF_PRIMITIVE_TYPE (DOUBLE, double_type_node) DEF_PRIMITIVE_TYPE (FLOAT80, float80_type_node) --- gcc/config/i386/i386.md.jj 2022-10-11 15:57:05.005762022 +0200 +++ gcc/config/i386/i386.md 2022-10-13 16:57:09.187771801 +0200 @@ -1644,6 +1644,48 @@ (define_expand "cbranch4" DONE; }) +(define_expand "cbranchbf4" + [(set (reg:CC FLAGS_REG) + (compare:CC (match_operand:BF 1 "cmp_fp_expander_operand") + (match_operand:BF 2 "cmp_fp_expander_operand"))) + (set (pc) (if_then_else + (match_operator 0 "comparison_operator" + [(reg:CC FLAGS_REG) + (const_int 0)]) + (label_ref (match_operand 3)) + (pc)))] + "" +{ + rtx op1 = gen_lowpart (HImode, operands[1]); + if (CONST_INT_P (op1)) + op1 = simplify_const_unary_operation (FLOAT_EXTEND, SFmode, + operands[1], BFmode); + else + { + rtx t1 = gen_reg_rtx (SImode); + emit_insn (gen_zero_extendhisi2 (t1, op1)); + emit_insn (gen_ashlsi3 (t1, t1, GEN_INT (16))); + op1 = gen_lowpart (SFmode, t1); + } + rtx op2 = gen_lowpart (HImode, operands[2]); + if (CONST_INT_P (op2)) + op2 = simplify_const_unary_operation (FLOAT_EXTEND, SFmode, + operands[2], BFmode); + else + { + rtx t2 = gen_reg_rtx (SImode); + emit_insn (gen_zero_extendhisi2 (t2, op2)); + emit_insn (gen_ashlsi3 (t2, t2, GEN_INT (16))); + op2 = gen_lowpart (SFmode, t2); + } + do_compare_rtx_and_jump (op1, op2, GET_CODE (operands[0]), 0, + SFmode, NULL_RTX, NULL, + as_a (operands[3]), + /* Unfortunately this isn't propagated. */ + profile_probability::even ()); + DONE; +}) + (define_expand "cstorehf4" [(set (reg:CC FLAGS_REG) (compare:CC (match_operand:HF 2 "cmp_fp_expander_operand") @@ -1659,6 +1701,45 @@ (define_expand "cstorehf4" DONE; }) +(define_expand "cstorebf4" + [(set (reg:CC FLAGS_REG) + (compare:CC (match_operand:BF 2 "cmp_fp_expander_operand") + (match_operand:BF 3 "cmp_fp_expander_operand"))) + (set (match_operand:QI 0 "register_operand") + (match_operator 1 "comparison_operator" + [(reg:CC FLAGS_REG) + (const_int 0)]))] + "" +{ + rtx op1 = gen_lowpart (HImode, operands[2]); + if (CONST_INT_P (op1)) + op1 = simplify_const_unary_operation (FLOAT_EXTEND, SFmode, + operands[2], BFmode); + else + { + rtx t1 = gen_reg_rtx (SImode); + emit_insn (gen_zero_extendhisi2 (t1, op1)); + emit_insn (gen_ashlsi3 (t1, t1, GEN_INT (16))); + op1 = gen_lowpart (SFmode, t1); + } + rtx op2 = gen_lowpart (HImode, operands[3]); + if (CONST_INT_P (op2)) + op2 = simplify_const_unary_operation (FLOAT_EXTEND, SFmode, + operands[3], BFmode); + else + { + rtx t2 = gen_reg_rtx (SImode); + emit_insn (gen_zero_extendhisi2 (t2, op2)); + emit_insn (gen_ashlsi3 (t2, t2, GEN_INT (16))); + op2 = gen_lowpart (SFmode, t2); + } + rtx res = emit_store_flag_force (operands[0], GET_CODE (operands[1]), + op1, op2, SFmode, 0, 1); + if (!rtx_equal_p (res, operands[0])) + emit_move_insn (operands[0], res); + DONE; +}) + (define_expand "cstore4" [(set (reg:CC FLAGS_REG) (compare:CC (match_operand:MODEF 2 "cmp_fp_expander_operand") --- gcc/c-family/c-cppbuiltin.cc.jj 2022-10-13 08:41:04.718165419 +0200 +++ gcc/c-family/c-cppbuiltin.cc 2022-10-13 17:51:07.722665421 +0200 @@ -1260,6 +1260,13 @@ c_cpp_builtins (cpp_reader *pfile) builtin_define_float_constants (prefix, ggc_strdup (csuffix), "%s", csuffix, FLOATN_NX_TYPE_NODE (i)); } + if (bfloat16_type_node) + { + if (c_dialect_cxx () && cxx_dialect > cxx20) + cpp_define (pfile, "__STDCPP_BFLOAT16_T__=1"); + builtin_define_float_constants ("BFLT16", "BF16", "%s", + "BF16", bfloat16_type_node); + } /* For float.h. */ if (targetm.decimal_float_supported_p ()) @@ -1370,6 +1377,12 @@ c_cpp_builtins (cpp_reader *pfile) suffix[0] = 'l'; memcpy (float_h_prefix, "LDBL", 5); } + else if (bfloat16_type_node + && mode == TYPE_MODE (bfloat16_type_node)) + { + memcpy (suffix, "bf16", 5); + memcpy (float_h_prefix, "BFLT16", 7); + } else { bool found_suffix = false; @@ -1396,22 +1409,28 @@ c_cpp_builtins (cpp_reader *pfile) machine_mode float16_type_mode = (float16_type_node ? TYPE_MODE (float16_type_node) : VOIDmode); + machine_mode bfloat16_type_mode = (bfloat16_type_node + ? TYPE_MODE (bfloat16_type_node) + : VOIDmode); switch (targetm.c.excess_precision (EXCESS_PRECISION_TYPE_IMPLICIT)) { case FLT_EVAL_METHOD_UNPREDICTABLE: case FLT_EVAL_METHOD_PROMOTE_TO_LONG_DOUBLE: excess_precision = (mode == float16_type_mode + || mode == bfloat16_type_mode || mode == TYPE_MODE (float_type_node) || mode == TYPE_MODE (double_type_node)); break; case FLT_EVAL_METHOD_PROMOTE_TO_DOUBLE: excess_precision = (mode == float16_type_mode + || mode == bfloat16_type_mode || mode == TYPE_MODE (float_type_node)); break; case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT: - excess_precision = mode == float16_type_mode; + excess_precision = (mode == float16_type_mode + || mode == bfloat16_type_mode); break; case FLT_EVAL_METHOD_PROMOTE_TO_FLOAT16: excess_precision = false; --- gcc/c-family/c-lex.cc.jj 2022-10-13 16:21:52.548842666 +0200 +++ gcc/c-family/c-lex.cc 2022-10-13 16:59:51.778540099 +0200 @@ -1000,6 +1000,22 @@ interpret_float (const cpp_token *token, pedwarn (input_location, OPT_Wpedantic, "non-standard suffix on floating constant"); } + else if ((flags & CPP_N_BFLOAT16) != 0) + { + type = bfloat16_type_node; + if (type == NULL_TREE) + { + error ("unsupported non-standard suffix on floating constant"); + return error_mark_node; + } + if (!c_dialect_cxx ()) + pedwarn (input_location, OPT_Wpedantic, + "non-standard suffix on floating constant"); + else if (cxx_dialect < cxx23) + pedwarn (input_location, OPT_Wpedantic, + "% or % suffix on floating constant only " + "available with %<-std=c++2b%> or %<-std=gnu++2b%>"); + } else if ((flags & CPP_N_WIDTH) == CPP_N_LARGE) type = long_double_type_node; else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL --- gcc/c/c-typeck.cc.jj 2022-10-06 17:43:47.900502672 +0200 +++ gcc/c/c-typeck.cc 2022-10-13 16:57:09.226771266 +0200 @@ -3678,6 +3678,9 @@ convert_arguments (location_t loc, vec 1 && mv2 == long_double_type_node) return -2; /* Otherwise, they have equal rank, but extended types - (other than std::bfloat16_t) have higher subrank. */ + (other than std::bfloat16_t) have higher subrank. + std::bfloat16_t shouldn't have equal rank to any standard + floating point type. */ return 1; } --- gcc/testsuite/lib/target-supports.exp.jj 2022-10-11 14:50:14.472773574 +0200 +++ gcc/testsuite/lib/target-supports.exp 2022-10-13 16:57:09.270770662 +0200 @@ -3416,6 +3416,22 @@ proc check_effective_target_base_quadflo return 1 } +# Return 1 if the target supports the __bf16 type, 0 otherwise. + +proc check_effective_target_bfloat16 {} { + return [check_no_compiler_messages_nocache bfloat16 object { + __bf16 foo (__bf16 x) { return x + x; } + } [add_options_for_bfloat16 ""]] +} + +proc check_effective_target_bfloat16_runtime {} { + return [check_effective_target_bfloat16] +} + +proc add_options_for_bfloat16 { flags } { + return "$flags" +} + # Return 1 if the target supports all four forms of fused multiply-add # (fma, fms, fnma, and fnms) for both float and double. --- gcc/testsuite/gcc.dg/torture/bfloat16-basic.c.jj 2022-10-13 16:57:09.271770648 +0200 +++ gcc/testsuite/gcc.dg/torture/bfloat16-basic.c 2022-10-13 17:32:28.531884882 +0200 @@ -0,0 +1,11 @@ +/* Test __bf16. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options bfloat16 } */ +/* { dg-require-effective-target bfloat16_runtime } */ + +#define TYPE __bf16 +#define CST(C) CONCAT (C, bf16) +#define CSTU(C) CONCAT (C, BF16) + +#include "floatn-basic.h" --- gcc/testsuite/gcc.dg/torture/bfloat16-builtin.c.jj 2022-10-13 16:57:09.271770648 +0200 +++ gcc/testsuite/gcc.dg/torture/bfloat16-builtin.c 2022-10-13 18:09:24.288913634 +0200 @@ -0,0 +1,47 @@ +/* Test __bf16 built-in functions. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options bfloat16 } */ +/* { dg-add-options ieee } */ +/* { dg-require-effective-target bfloat16_runtime } */ + +extern void exit (int); +extern void abort (void); + +extern __bf16 test_type; +extern __typeof (__builtin_nansf16b ("")) test_type; + +volatile __bf16 inf_cst = (__bf16) __builtin_inff (); +volatile __bf16 huge_val_cst = (__bf16) __builtin_huge_valf (); +volatile __bf16 nan_cst = (__bf16) __builtin_nanf (""); +volatile __bf16 nans_cst = __builtin_nansf16b (""); +volatile __bf16 neg0 = -0.0bf16, neg1 = -1.0bf16, one = 1.0; + +int +main (void) +{ + volatile __bf16 r; + if (!__builtin_isinf (inf_cst)) + abort (); + if (!__builtin_isinf (huge_val_cst)) + abort (); + if (inf_cst != huge_val_cst) + abort (); + if (!__builtin_isnan (nan_cst)) + abort (); + if (!__builtin_isnan (nans_cst)) + abort (); + r = __builtin_fabsf (neg1); + if (r != 1.0bf16) + abort (); + r = __builtin_copysignf (one, neg0); + if (r != neg1) + abort (); + r = __builtin_copysignf (inf_cst, neg1); + if (r != -huge_val_cst) + abort (); + r = __builtin_copysignf (-inf_cst, one); + if (r != huge_val_cst) + abort (); + exit (0); +} --- gcc/testsuite/gcc.dg/torture/bfloat16-builtin-issignaling-1.c.jj 2022-10-13 16:57:09.271770648 +0200 +++ gcc/testsuite/gcc.dg/torture/bfloat16-builtin-issignaling-1.c 2022-10-13 17:40:15.067555349 +0200 @@ -0,0 +1,21 @@ +/* Test __bf16 __builtin_issignaling. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options bfloat16 } */ +/* { dg-add-options ieee } */ +/* { dg-require-effective-target bfloat16_runtime } */ +/* { dg-additional-options "-fsignaling-nans" } */ +/* Workaround for PR57484 on ia32: */ +/* { dg-additional-options "-msse2 -mfpmath=sse" { target { ia32 && sse2_runtime } } } */ + +#define CONCATX(X, Y) X ## Y +#define CONCAT(X, Y) CONCATX (X, Y) + +#define TYPE __bf16 +#define CST(C) CONCAT (C, bf16) +#define FN(F) CONCAT (F, f16b) +#define NAN(x) ((__bf16) __builtin_nanf (x)) +#define INF ((__bf16) __builtin_inff ()) +#define EXT 0 + +#include "builtin-issignaling-1.c" --- gcc/testsuite/gcc.dg/torture/bfloat16-complex.c.jj 2022-10-13 16:57:09.271770648 +0200 +++ gcc/testsuite/gcc.dg/torture/bfloat16-complex.c 2022-10-13 17:46:43.259267724 +0200 @@ -0,0 +1,61 @@ +/* Test __bf16 complex arithmetic. */ +/* { dg-do run } */ +/* { dg-options "" } */ +/* { dg-add-options bfloat16 } */ +/* { dg-require-effective-target bfloat16_runtime } */ + +extern void exit (int); +extern void abort (void); + +volatile __bf16 a = 1.0bf16; +typedef _Complex float __cbf16 __attribute__((__mode__(__BC__))); +volatile __cbf16 b = __builtin_complex (2.0bf16, 3.0bf16); +volatile __cbf16 c = __builtin_complex (2.0bf16, 3.0bf16); +volatile __cbf16 d = __builtin_complex (2.0bf16, 3.0bf16); + +__cbf16 +fn (__cbf16 arg) +{ + return arg / 4; +} + +int +main (void) +{ + volatile __cbf16 r; + if (b != c) + abort (); + if (b != d) + abort (); + r = a + b; + if (__real__ r != 3.0bf16 || __imag__ r != 3.0bf16) + abort (); + r += d; + if (__real__ r != 5.0bf16 || __imag__ r != 6.0bf16) + abort (); + r -= a; + if (__real__ r != 4.0bf16 || __imag__ r != 6.0bf16) + abort (); + r /= (a + a); + if (__real__ r != 2.0bf16 || __imag__ r != 3.0bf16) + abort (); + r *= (a + a); + if (__real__ r != 4.0bf16 || __imag__ r != 6.0bf16) + abort (); + r -= b; + if (__real__ r != 2.0bf16 || __imag__ r != 3.0bf16) + abort (); + r *= r; + if (__real__ r != -5.0bf16 || __imag__ r != 12.0bf16) + abort (); + /* Division may not be exact, so round result before comparing. */ + r /= b; + r += __builtin_complex (100.0bf16, 100.0bf16); + r -= __builtin_complex (100.0bf16, 100.0bf16); + if (r != b) + abort (); + r = fn (r); + if (__real__ r != 0.5bf16 || __imag__ r != 0.75bf16) + abort (); + exit (0); +} --- gcc/testsuite/gcc.dg/torture/builtin-issignaling-1.c.jj 2022-10-03 18:00:53.118734300 +0200 +++ gcc/testsuite/gcc.dg/torture/builtin-issignaling-1.c 2022-10-13 17:39:19.387313780 +0200 @@ -4,7 +4,7 @@ /* Workaround for PR57484 on ia32: */ /* { dg-additional-options "-msse2 -mfpmath=sse" { target { ia32 && sse2_runtime } } } */ -#ifndef EXT +#if !defined(EXT) && !defined(TYPE) int f1 (void) { @@ -41,31 +41,42 @@ f6 (long double x) return __builtin_issignaling (x); } #else -#define CONCATX(X, Y) X ## Y -#define CONCAT(X, Y) CONCATX (X, Y) -#define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z) -#define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z) - -#if EXT -# define TYPE CONCAT3 (_Float, WIDTH, x) -# define CST(C) CONCAT4 (C, f, WIDTH, x) -# define FN(F) CONCAT4 (F, f, WIDTH, x) -#else -# define TYPE CONCAT (_Float, WIDTH) -# define CST(C) CONCAT3 (C, f, WIDTH) -# define FN(F) CONCAT3 (F, f, WIDTH) +#ifndef TYPE +# define CONCATX(X, Y) X ## Y +# define CONCAT(X, Y) CONCATX (X, Y) +# define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z) +# define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z) + +# if EXT +# define TYPE CONCAT3 (_Float, WIDTH, x) +# define CST(C) CONCAT4 (C, f, WIDTH, x) +# define FN(F) CONCAT4 (F, f, WIDTH, x) +# else +# define TYPE CONCAT (_Float, WIDTH) +# define CST(C) CONCAT3 (C, f, WIDTH) +# define FN(F) CONCAT3 (F, f, WIDTH) +# endif +#endif +#ifndef NANS +# define NANS(x) FN (__builtin_nans) (x) +#endif +#ifndef NAN +# define NAN(x) FN (__builtin_nan) (x) +#endif +#ifndef INF +# define INF FN (__builtin_inf) () #endif int f1 (void) { - return __builtin_issignaling (FN (__builtin_nans) ("")); + return __builtin_issignaling (NANS ("")); } int f2 (void) { - return __builtin_issignaling (FN (__builtin_nan) ("")); + return __builtin_issignaling (NAN ("")); } int @@ -118,10 +129,10 @@ main () if (!f6 (z)) __builtin_abort (); #else - if (f4 (w) || !f4 (FN (__builtin_nans) ("0x123")) || f4 (CST (42.0)) || f4 (FN (__builtin_nan) ("0x234")) - || f4 (FN (__builtin_inf) ()) || f4 (-FN (__builtin_inf) ()) || f4 (CST (-42.0)) || f4 (CST (-0.0)) || f4 (CST (0.0))) + if (f4 (w) || !f4 (NANS ("0x123")) || f4 (CST (42.0)) || f4 (NAN ("0x234")) + || f4 (INF) || f4 (-INF) || f4 (CST (-42.0)) || f4 (CST (-0.0)) || f4 (CST (0.0))) __builtin_abort (); - w = FN (__builtin_nans) (""); + w = NANS (""); asm volatile ("" : : : "memory"); if (!f4 (w)) __builtin_abort (); --- gcc/testsuite/gcc.dg/torture/floatn-basic.h.jj 2022-10-03 18:00:53.118734300 +0200 +++ gcc/testsuite/gcc.dg/torture/floatn-basic.h 2022-10-13 16:57:09.285770456 +0200 @@ -9,14 +9,16 @@ #define CONCAT3(X, Y, Z) CONCAT (CONCAT (X, Y), Z) #define CONCAT4(W, X, Y, Z) CONCAT (CONCAT (CONCAT (W, X), Y), Z) -#if EXT -# define TYPE CONCAT3 (_Float, WIDTH, x) -# define CST(C) CONCAT4 (C, f, WIDTH, x) -# define CSTU(C) CONCAT4 (C, F, WIDTH, x) -#else -# define TYPE CONCAT (_Float, WIDTH) -# define CST(C) CONCAT3 (C, f, WIDTH) -# define CSTU(C) CONCAT3 (C, F, WIDTH) +#ifndef TYPE +# if EXT +# define TYPE CONCAT3 (_Float, WIDTH, x) +# define CST(C) CONCAT4 (C, f, WIDTH, x) +# define CSTU(C) CONCAT4 (C, F, WIDTH, x) +# else +# define TYPE CONCAT (_Float, WIDTH) +# define CST(C) CONCAT3 (C, f, WIDTH) +# define CSTU(C) CONCAT3 (C, F, WIDTH) +# endif #endif extern void exit (int); --- gcc/testsuite/gcc.target/i386/vect-bfloat16-typecheck_2.c.jj 2022-10-03 18:00:53.137734043 +0200 +++ gcc/testsuite/gcc.target/i386/vect-bfloat16-typecheck_2.c 2022-10-13 16:57:09.306770168 +0200 @@ -45,19 +45,19 @@ __m256bf16 footest (__m256bf16 vector0) __m256bf16 vector2_1 = {}; __m256bf16 vector2_2 = { glob_bfloat }; __m256bf16 vector2_3 = { glob_bfloat, glob_bfloat, glob_bfloat, glob_bfloat }; - __m256bf16 vector2_4 = { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_5 = { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_6 = { is_a_float16 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_7 = { is_a_float }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_8 = { is_an_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_9 = { is_a_short_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m256bf16 vector2_10 = { 0.0, 0, is_a_short_int, is_a_float }; /* { dg-error "invalid conversion to type '__bf16'" } */ - - __v8si initi_2_1 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m256 initi_2_2 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m256h initi_2_3 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m256i initi_2_5 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __v16hi initi_2_6 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ + __m256bf16 vector2_4 = { 0 }; + __m256bf16 vector2_5 = { 0.1 }; + __m256bf16 vector2_6 = { is_a_float16 }; + __m256bf16 vector2_7 = { is_a_float }; + __m256bf16 vector2_8 = { is_an_int }; + __m256bf16 vector2_9 = { is_a_short_int }; + __m256bf16 vector2_10 = { 0.0, 0, is_a_short_int, is_a_float }; + + __v8si initi_2_1 = { glob_bfloat }; + __m256 initi_2_2 = { glob_bfloat }; + __m256h initi_2_3 = { glob_bfloat }; + __m256i initi_2_5 = { glob_bfloat }; + __v16hi initi_2_6 = { glob_bfloat }; /* Assignments to/from vectors. */ @@ -79,25 +79,25 @@ __m256bf16 footest (__m256bf16 vector0) /* Assignments to/from elements. */ vector2_3[0] = glob_bfloat; - vector2_3[0] = is_an_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_short_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_float; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_float16; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = 0; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = 0.1; /* { dg-error {invalid conversion to type '__bf16'} } */ + vector2_3[0] = is_an_int; + vector2_3[0] = is_a_short_int; + vector2_3[0] = is_a_float; + vector2_3[0] = is_a_float16; + vector2_3[0] = 0; + vector2_3[0] = 0.1; glob_bfloat = vector2_3[0]; - is_an_int = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_short_int = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float16 = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ + is_an_int = vector2_3[0]; + is_a_short_int = vector2_3[0]; + is_a_float = vector2_3[0]; + is_a_float16 = vector2_3[0]; /* Compound literals. */ (__m256bf16) {}; - (__m256bf16) { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__m256bf16) { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ + (__m256bf16) { 0 }; + (__m256bf16) { 0.1 }; (__m256bf16) { is_a_float_vec }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__m256'} } */ (__m256bf16) { is_an_int_vec }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__v8si'} } */ (__m256bf16) { is_a_long_int_pair }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__m256i'} } */ @@ -176,16 +176,16 @@ __m256bf16 footest (__m256bf16 vector0) bfloat_ptr = &bfloat_ptr3[1]; /* Simple comparison. */ - vector0 > glob_bfloat_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - glob_bfloat_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > is_a_float_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_a_float_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0 == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0.1 == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > is_an_int_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_an_int_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ + vector0 > glob_bfloat_vec; + glob_bfloat_vec == vector0; + vector0 > is_a_float_vec; /* { dg-error {comparing vectors with different element types} } */ + is_a_float_vec == vector0; /* { dg-error {comparing vectors with different element types} } */ + vector0 > 0; + 0 == vector0; + vector0 > 0.1; /* { dg-error {conversion of scalar 'double' to vector '__m256bf16'} } */ + 0.1 == vector0; /* { dg-error {conversion of scalar 'double' to vector '__m256bf16'} } */ + vector0 > is_an_int_vec; /* { dg-error {comparing vectors with different element types} } */ + is_an_int_vec == vector0; /* { dg-error {comparing vectors with different element types} } */ /* Pointer comparison. */ @@ -224,24 +224,24 @@ __m256bf16 footest (__m256bf16 vector0) /* Unary operators. */ - +vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - -vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ~vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - !vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ + +vector0; + -vector0; + ~vector0; /* { dg-error {wrong type argument to bit-complement} } */ + !vector0; /* { dg-error {wrong type argument to unary exclamation mark} } */ *vector0; /* { dg-error {invalid type argument of unary '\*'} } */ - __real vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - __imag vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ++vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - --vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0++; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0--; /* { dg-error {operation not permitted on type '__bf16'} } */ + __real vector0; /* { dg-error {wrong type argument to __real} } */ + __imag vector0; /* { dg-error {wrong type argument to __imag} } */ + ++vector0; + --vector0; + vector0++; + vector0--; /* Binary arithmetic operations. */ - vector0 = glob_bfloat_vec + *bfloat_ptr; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + is_a_float_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ + vector0 = glob_bfloat_vec + *bfloat_ptr; + vector0 = glob_bfloat_vec + 0.1; /* { dg-error {conversion of scalar 'double' to vector '__m256bf16'} } */ + vector0 = glob_bfloat_vec + 0; + vector0 = glob_bfloat_vec + is_a_float_vec; /* { dg-error {invalid operands to binary \+} } */ return vector0; } --- gcc/testsuite/gcc.target/i386/sse2-bfloat16-scalar-typecheck.c.jj 2022-10-03 18:00:53.136734057 +0200 +++ gcc/testsuite/gcc.target/i386/sse2-bfloat16-scalar-typecheck.c 2022-10-13 16:57:09.327769880 +0200 @@ -12,8 +12,8 @@ double is_a_double; float *float_ptr; -__bf16 foo1 (void) { return (__bf16) 0x1234; } /* { dg-error {invalid conversion to type '__bf16'} } */ -__bf16 foo2 (void) { return (__bf16) (short) 0x1234; } /* { dg-error {invalid conversion to type '__bf16'} } */ +__bf16 foo1 (void) { return (__bf16) 0x1234; } +__bf16 foo2 (void) { return (__bf16) (short) 0x1234; } __bf16 footest (__bf16 scalar0) { @@ -22,87 +22,87 @@ __bf16 footest (__bf16 scalar0) __bf16 scalar1_1; __bf16 scalar1_2 = glob_bfloat; - __bf16 scalar1_3 = 0; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_4 = 0.1; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_5 = is_a_float; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_6 = is_an_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_7 = is_a_float16; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_8 = is_a_double; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar1_9 = is_a_short_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - - int initi_1_1 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - float initi_1_2 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - _Float16 initi_1_3 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - short initi_1_4 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - double initi_1_5 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ + __bf16 scalar1_3 = 0; + __bf16 scalar1_4 = 0.1; + __bf16 scalar1_5 = is_a_float; + __bf16 scalar1_6 = is_an_int; + __bf16 scalar1_7 = is_a_float16; + __bf16 scalar1_8 = is_a_double; + __bf16 scalar1_9 = is_a_short_int; + + int initi_1_1 = glob_bfloat; + float initi_1_2 = glob_bfloat; + _Float16 initi_1_3 = glob_bfloat; + short initi_1_4 = glob_bfloat; + double initi_1_5 = glob_bfloat; __bf16 scalar2_1 = {}; __bf16 scalar2_2 = { glob_bfloat }; - __bf16 scalar2_3 = { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_4 = { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_5 = { is_a_float }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_6 = { is_an_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_7 = { is_a_float16 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_8 = { is_a_double }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 scalar2_9 = { is_a_short_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - - int initi_2_1 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - float initi_2_2 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - _Float16 initi_2_3 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - short initi_2_4 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - double initi_2_5 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ + __bf16 scalar2_3 = { 0 }; + __bf16 scalar2_4 = { 0.1 }; + __bf16 scalar2_5 = { is_a_float }; + __bf16 scalar2_6 = { is_an_int }; + __bf16 scalar2_7 = { is_a_float16 }; + __bf16 scalar2_8 = { is_a_double }; + __bf16 scalar2_9 = { is_a_short_int }; + + int initi_2_1 = { glob_bfloat }; + float initi_2_2 = { glob_bfloat }; + _Float16 initi_2_3 = { glob_bfloat }; + short initi_2_4 = { glob_bfloat }; + double initi_2_5 = { glob_bfloat }; /* Assignments. */ glob_bfloat = glob_bfloat; - glob_bfloat = 0; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = 0.1; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = is_a_float; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = is_an_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = is_a_float16; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = is_a_double; /* { dg-error {invalid conversion to type '__bf16'} } */ - glob_bfloat = is_a_short_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - - is_an_int = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float16 = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_double = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_short_int = glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ + glob_bfloat = 0; + glob_bfloat = 0.1; + glob_bfloat = is_a_float; + glob_bfloat = is_an_int; + glob_bfloat = is_a_float16; + glob_bfloat = is_a_double; + glob_bfloat = is_a_short_int; + + is_an_int = glob_bfloat; + is_a_float = glob_bfloat; + is_a_float16 = glob_bfloat; + is_a_double = glob_bfloat; + is_a_short_int = glob_bfloat; /* Casting. */ (void) glob_bfloat; (__bf16) glob_bfloat; - (int) glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - (float) glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - (_Float16) glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - (double) glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - (short) glob_bfloat; /* { dg-error {invalid conversion from type '__bf16'} } */ - - (__bf16) is_an_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) is_a_float; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) is_a_float16; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) is_a_double; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) is_a_short_int; /* { dg-error {invalid conversion to type '__bf16'} } */ + (int) glob_bfloat; + (float) glob_bfloat; + (_Float16) glob_bfloat; + (double) glob_bfloat; + (short) glob_bfloat; + + (__bf16) is_an_int; + (__bf16) is_a_float; + (__bf16) is_a_float16; + (__bf16) is_a_double; + (__bf16) is_a_short_int; /* Compound literals. */ (__bf16) {}; (__bf16) { glob_bfloat }; - (__bf16) { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { is_a_float }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { is_an_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { is_a_float16 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { is_a_double }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__bf16) { is_a_short_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - - (int) { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - (float) { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - (_Float16) { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - (double) { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - (short) { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ + (__bf16) { 0 }; + (__bf16) { 0.1 }; + (__bf16) { is_a_float }; + (__bf16) { is_an_int }; + (__bf16) { is_a_float16 }; + (__bf16) { is_a_double }; + (__bf16) { is_a_short_int }; + + (int) { glob_bfloat }; + (float) { glob_bfloat }; + (_Float16) { glob_bfloat }; + (double) { glob_bfloat }; + (short) { glob_bfloat }; /* Arrays and Structs. */ @@ -145,16 +145,16 @@ __bf16 footest (__bf16 scalar0) bfloat_ptr = &bfloat_ptr3[1]; /* Simple comparison. */ - scalar0 > glob_bfloat; /* { dg-error {operation not permitted on type '__bf16'} } */ - glob_bfloat == scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 > is_a_float; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_a_float == scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 > 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0 == scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 > 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0.1 == scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 > is_an_int; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_an_int == scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ + scalar0 > glob_bfloat; + glob_bfloat == scalar0; + scalar0 > is_a_float; + is_a_float == scalar0; + scalar0 > 0; + 0 == scalar0; + scalar0 > 0.1; + 0.1 == scalar0; + scalar0 > is_an_int; + is_an_int == scalar0; /* Pointer comparison. */ @@ -174,41 +174,41 @@ __bf16 footest (__bf16 scalar0) /* Conditional expressions. */ 0 ? scalar0 : scalar0; - 0 ? scalar0 : is_a_float; /* { dg-error {invalid conversion from type '__bf16'} } */ - 0 ? is_a_float : scalar0; /* { dg-error {invalid conversion from type '__bf16'} } */ - 0 ? scalar0 : 0; /* { dg-error {invalid conversion to type '__bf16'} } */ - 0 ? 0 : scalar0; /* { dg-error {invalid conversion to type '__bf16'} } */ - 0 ? 0.1 : scalar0; /* { dg-error {invalid conversion from type '__bf16'} } */ - 0 ? scalar0 : 0.1; /* { dg-error {invalid conversion from type '__bf16'} } */ + 0 ? scalar0 : is_a_float; + 0 ? is_a_float : scalar0; + 0 ? scalar0 : 0; + 0 ? 0 : scalar0; + 0 ? 0.1 : scalar0; + 0 ? scalar0 : 0.1; 0 ? bfloat_ptr : bfloat_ptr2; 0 ? bfloat_ptr : float_ptr; /* { dg-warning {pointer type mismatch in conditional expression} } */ 0 ? float_ptr : bfloat_ptr; /* { dg-warning {pointer type mismatch in conditional expression} } */ - scalar0 ? scalar0 : scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 ? is_a_float : scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 ? scalar0 : is_a_float; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 ? is_a_float : is_a_float; /* { dg-error {operation not permitted on type '__bf16'} } */ + scalar0 ? scalar0 : scalar0; + scalar0 ? is_a_float : scalar0; + scalar0 ? scalar0 : is_a_float; + scalar0 ? is_a_float : is_a_float; /* Unary operators. */ - +scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - -scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ~scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - !scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ + +scalar0; + -scalar0; + ~scalar0; /* { dg-error {wrong type argument to bit-complement} } */ + !scalar0; *scalar0; /* { dg-error {invalid type argument of unary '\*'} } */ - __real scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - __imag scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ++scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - --scalar0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0++; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0--; /* { dg-error {operation not permitted on type '__bf16'} } */ + __real scalar0; + __imag scalar0; + ++scalar0; + --scalar0; + scalar0++; + scalar0--; /* Binary arithmetic operations. */ - scalar0 = glob_bfloat + *bfloat_ptr; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 = glob_bfloat + 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 = glob_bfloat + 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - scalar0 = glob_bfloat + is_a_float; /* { dg-error {operation not permitted on type '__bf16'} } */ + scalar0 = glob_bfloat + *bfloat_ptr; + scalar0 = glob_bfloat + 0.1; + scalar0 = glob_bfloat + 0; + scalar0 = glob_bfloat + is_a_float; return scalar0; } --- gcc/testsuite/gcc.target/i386/vect-bfloat16-typecheck_1.c.jj 2022-10-03 18:00:53.136734057 +0200 +++ gcc/testsuite/gcc.target/i386/vect-bfloat16-typecheck_1.c 2022-10-13 16:57:09.344769646 +0200 @@ -48,20 +48,20 @@ __m128bf16 footest (__m128bf16 vector0) __m128bf16 vector2_1 = {}; __m128bf16 vector2_2 = { glob_bfloat }; __m128bf16 vector2_3 = { glob_bfloat, glob_bfloat, glob_bfloat, glob_bfloat }; - __m128bf16 vector2_4 = { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_5 = { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_6 = { is_a_float16 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_7 = { is_a_float }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_8 = { is_an_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_9 = { is_a_short_int }; /* { dg-error {invalid conversion to type '__bf16'} } */ - __m128bf16 vector2_10 = { 0.0, 0, is_a_short_int, is_a_float }; /* { dg-error {invalid conversion to type '__bf16'} } */ - - __v8si initi_2_1 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m256 initi_2_2 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m128h initi_2_3 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __m128 initi_2_4 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __v4si initi_2_5 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ - __v4hi initi_2_6 = { glob_bfloat }; /* { dg-error {invalid conversion from type '__bf16'} } */ + __m128bf16 vector2_4 = { 0 }; + __m128bf16 vector2_5 = { 0.1 }; + __m128bf16 vector2_6 = { is_a_float16 }; + __m128bf16 vector2_7 = { is_a_float }; + __m128bf16 vector2_8 = { is_an_int }; + __m128bf16 vector2_9 = { is_a_short_int }; + __m128bf16 vector2_10 = { 0.0, 0, is_a_short_int, is_a_float }; + + __v8si initi_2_1 = { glob_bfloat }; + __m256 initi_2_2 = { glob_bfloat }; + __m128h initi_2_3 = { glob_bfloat }; + __m128 initi_2_4 = { glob_bfloat }; + __v4si initi_2_5 = { glob_bfloat }; + __v4hi initi_2_6 = { glob_bfloat }; /* Assignments to/from vectors. */ @@ -85,25 +85,25 @@ __m128bf16 footest (__m128bf16 vector0) /* Assignments to/from elements. */ vector2_3[0] = glob_bfloat; - vector2_3[0] = is_an_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_short_int; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_float; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = is_a_float16; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = 0; /* { dg-error {invalid conversion to type '__bf16'} } */ - vector2_3[0] = 0.1; /* { dg-error {invalid conversion to type '__bf16'} } */ + vector2_3[0] = is_an_int; + vector2_3[0] = is_a_short_int; + vector2_3[0] = is_a_float; + vector2_3[0] = is_a_float16; + vector2_3[0] = 0; + vector2_3[0] = 0.1; glob_bfloat = vector2_3[0]; - is_an_int = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_short_int = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ - is_a_float16 = vector2_3[0]; /* { dg-error {invalid conversion from type '__bf16'} } */ + is_an_int = vector2_3[0]; + is_a_short_int = vector2_3[0]; + is_a_float = vector2_3[0]; + is_a_float16 = vector2_3[0]; /* Compound literals. */ (__m128bf16) {}; - (__m128bf16) { 0 }; /* { dg-error {invalid conversion to type '__bf16'} } */ - (__m128bf16) { 0.1 }; /* { dg-error {invalid conversion to type '__bf16'} } */ + (__m128bf16) { 0 }; + (__m128bf16) { 0.1 }; (__m128bf16) { is_a_float_vec }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__m256'} } */ (__m128bf16) { is_an_int_vec }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__v8si'} } */ (__m128bf16) { is_a_float_pair }; /* { dg-error {incompatible types when initializing type '__bf16' using type '__m128'} } */ @@ -186,16 +186,16 @@ __m128bf16 footest (__m128bf16 vector0) bfloat_ptr = &bfloat_ptr3[1]; /* Simple comparison. */ - vector0 > glob_bfloat_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - glob_bfloat_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > is_a_float_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_a_float_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0 == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - 0.1 == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 > is_an_int_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ - is_an_int_vec == vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ + vector0 > glob_bfloat_vec; + glob_bfloat_vec == vector0; + vector0 > is_a_float_vec; /* { dg-error {comparing vectors with different element types} } */ + is_a_float_vec == vector0; /* { dg-error {comparing vectors with different element types} } */ + vector0 > 0; + 0 == vector0; + vector0 > 0.1; /* { dg-error {conversion of scalar 'double' to vector '__m128bf16'} } */ + 0.1 == vector0; /* { dg-error {conversion of scalar 'double' to vector '__m128bf16'} } */ + vector0 > is_an_int_vec; /* { dg-error {comparing vectors with different element types} } */ + is_an_int_vec == vector0; /* { dg-error {comparing vectors with different element types} } */ /* Pointer comparison. */ @@ -234,24 +234,24 @@ __m128bf16 footest (__m128bf16 vector0) /* Unary operators. */ - +vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - -vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ~vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - !vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ + +vector0; + -vector0; + ~vector0; /* { dg-error {wrong type argument to bit-complement} } */ + !vector0; /* { dg-error {wrong type argument to unary exclamation mark} } */ *vector0; /* { dg-error {invalid type argument of unary '\*'} } */ - __real vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - __imag vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - ++vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - --vector0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0++; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0--; /* { dg-error {operation not permitted on type '__bf16'} } */ + __real vector0; /* { dg-error {wrong type argument to __real} } */ + __imag vector0; /* { dg-error {wrong type argument to __imag} } */ + ++vector0; + --vector0; + vector0++; + vector0--; /* Binary arithmetic operations. */ - vector0 = glob_bfloat_vec + *bfloat_ptr; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + 0.1; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + 0; /* { dg-error {operation not permitted on type '__bf16'} } */ - vector0 = glob_bfloat_vec + is_a_float_vec; /* { dg-error {operation not permitted on type '__bf16'} } */ + vector0 = glob_bfloat_vec + *bfloat_ptr; + vector0 = glob_bfloat_vec + 0.1; /* { dg-error {conversion of scalar 'double' to vector '__m128bf16'} } */ + vector0 = glob_bfloat_vec + 0; + vector0 = glob_bfloat_vec + is_a_float_vec; /* { dg-error {invalid operands to binary \+} } */ return vector0; } --- gcc/testsuite/g++.target/i386/bfloat_cpp_typecheck.C.jj 2022-10-03 18:00:53.109734421 +0200 +++ gcc/testsuite/g++.target/i386/bfloat_cpp_typecheck.C 2022-10-13 16:57:09.362769399 +0200 @@ -5,6 +5,6 @@ void foo (void) { __bf16 (); /* { dg-bogus {invalid conversion to type '__bf16'} } */ __bf16 a = __bf16(); /* { dg-bogus {invalid conversion to type '__bf16'} } */ - __bf16 (0x1234); /* { dg-error {invalid conversion to type '__bf16'} } */ - __bf16 (0.1); /* { dg-error {invalid conversion to type '__bf16'} } */ + __bf16 (0x1234); /* { dg-bogus {invalid conversion to type '__bf16'} } */ + __bf16 (0.1); /* { dg-bogus {invalid conversion to type '__bf16'} } */ } --- libcpp/include/cpplib.h.jj 2022-10-03 18:00:53.251732506 +0200 +++ libcpp/include/cpplib.h 2022-10-13 16:57:09.384769097 +0200 @@ -1275,6 +1275,7 @@ struct cpp_num #define CPP_N_USERDEF 0x1000000 /* C++11 user-defined literal. */ #define CPP_N_SIZE_T 0x2000000 /* C++23 size_t literal. */ +#define CPP_N_BFLOAT16 0x4000000 /* std::bfloat16_t type. */ #define CPP_N_WIDTH_FLOATN_NX 0xF0000000 /* _FloatN / _FloatNx value of N, divided by 16. */ --- libcpp/expr.cc.jj 2022-10-03 18:00:53.221732910 +0200 +++ libcpp/expr.cc 2022-10-13 16:58:01.360055690 +0200 @@ -91,10 +91,10 @@ interpret_float_suffix (cpp_reader *pfil size_t orig_len = len; const uchar *orig_s = s; size_t flags; - size_t f, d, l, w, q, i, fn, fnx, fn_bits; + size_t f, d, l, w, q, i, fn, fnx, fn_bits, bf16; flags = 0; - f = d = l = w = q = i = fn = fnx = fn_bits = 0; + f = d = l = w = q = i = fn = fnx = fn_bits = bf16 = 0; /* The following decimal float suffixes, from TR 24732:2009, TS 18661-2:2015 and C2X, are supported: @@ -131,7 +131,8 @@ interpret_float_suffix (cpp_reader *pfil w, W - machine-specific type such as __float80 (GNU extension). q, Q - machine-specific type such as __float128 (GNU extension). fN, FN - _FloatN (TS 18661-3:2015). - fNx, FNx - _FloatNx (TS 18661-3:2015). */ + fNx, FNx - _FloatNx (TS 18661-3:2015). + bf16, BF16 - std::bfloat16_t (ISO C++23). */ /* Process decimal float suffixes, which are two letters starting with d or D. Order and case are significant. */ @@ -239,6 +240,19 @@ interpret_float_suffix (cpp_reader *pfil fn++; } break; + case 'b': case 'B': + if (len > 2 + /* Except for bf16 / BF16 where case is significant. */ + && s[1] == (s[0] == 'b' ? 'f' : 'F') + && s[2] == '1' + && s[3] == '6') + { + bf16++; + len -= 3; + s += 3; + break; + } + return 0; case 'd': case 'D': d++; break; case 'l': case 'L': l++; break; case 'w': case 'W': w++; break; @@ -257,7 +271,7 @@ interpret_float_suffix (cpp_reader *pfil of N larger than can be represented in the return value. The caller is responsible for rejecting _FloatN suffixes where _FloatN is not supported on the chosen target. */ - if (f + d + l + w + q + fn + fnx > 1 || i > 1) + if (f + d + l + w + q + fn + fnx + bf16 > 1 || i > 1) return 0; if (fn_bits > CPP_FLOATN_MAX) return 0; @@ -295,6 +309,7 @@ interpret_float_suffix (cpp_reader *pfil q ? CPP_N_MD_Q : fn ? CPP_N_FLOATN | (fn_bits << CPP_FLOATN_SHIFT) : fnx ? CPP_N_FLOATNX | (fn_bits << CPP_FLOATN_SHIFT) : + bf16 ? CPP_N_BFLOAT16 : CPP_N_DEFAULT)); } --- libgcc/config/i386/t-softfp.jj 2022-10-03 18:00:53.314731656 +0200 +++ libgcc/config/i386/t-softfp 2022-10-13 16:57:09.426768521 +0200 @@ -6,8 +6,9 @@ LIB2FUNCS_EXCLUDE += $(libgcc2-hf-functi libgcc2-hf-extras = $(addsuffix .c, $(libgcc2-hf-functions)) LIB2ADD += $(addprefix $(srcdir)/config/i386/, $(libgcc2-hf-extras)) -softfp_extensions := hfsf hfdf hftf hfxf sfdf sftf dftf xftf -softfp_truncations := tfhf xfhf dfhf sfhf tfsf dfsf tfdf tfxf +softfp_extensions := hfsf hfdf hftf hfxf sfdf sftf dftf xftf bfsf +softfp_truncations := tfhf xfhf dfhf sfhf tfsf dfsf tfdf tfxf \ + tfbf xfbf dfbf sfbf hfbf softfp_extras += eqhf2 @@ -15,11 +16,17 @@ CFLAGS-extendhfsf2.c += -msse2 CFLAGS-extendhfdf2.c += -msse2 CFLAGS-extendhftf2.c += -msse2 CFLAGS-extendhfxf2.c += -msse2 +CFLAGS-extendbfsf2.c += -msse2 CFLAGS-truncsfhf2.c += -msse2 CFLAGS-truncdfhf2.c += -msse2 CFLAGS-truncxfhf2.c += -msse2 CFLAGS-trunctfhf2.c += -msse2 +CFLAGS-truncsfbf2.c += -msse2 +CFLAGS-truncdfbf2.c += -msse2 +CFLAGS-truncxfbf2.c += -msse2 +CFLAGS-trunctfbf2.c += -msse2 +CFLAGS-trunchfbf2.c += -msse2 CFLAGS-eqhf2.c += -msse2 CFLAGS-_divhc3.c += -msse2 --- libgcc/config/i386/libgcc-glibc.ver.jj 2022-10-03 18:00:53.313731670 +0200 +++ libgcc/config/i386/libgcc-glibc.ver 2022-10-13 16:57:09.438768356 +0200 @@ -214,3 +214,13 @@ GCC_12.0.0 { __trunctfhf2 __truncxfhf2 } + +%inherit GCC_13.0.0 GCC_12.0.0 +GCC_13.0.0 { + __extendbfsf2 + __truncdfbf2 + __truncsfbf2 + __trunctfbf2 + __truncxfbf2 + __trunchfbf2 +} --- libgcc/config/i386/sfp-machine.h.jj 2022-10-03 18:00:53.313731670 +0200 +++ libgcc/config/i386/sfp-machine.h 2022-10-13 16:57:09.441768315 +0200 @@ -18,6 +18,7 @@ typedef int __gcc_CMPtype __attribute__ #define _FP_QNANNEGATEDP 0 #define _FP_NANSIGN_H 1 +#define _FP_NANSIGN_B 1 #define _FP_NANSIGN_S 1 #define _FP_NANSIGN_D 1 #define _FP_NANSIGN_E 1 --- libgcc/config/i386/64/sfp-machine.h.jj 2022-10-03 18:00:53.290731980 +0200 +++ libgcc/config/i386/64/sfp-machine.h 2022-10-13 16:57:09.451768178 +0200 @@ -14,6 +14,7 @@ typedef unsigned int UTItype __attribute #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) #define _FP_NANFRAC_H _FP_QNANBIT_H +#define _FP_NANFRAC_B _FP_QNANBIT_B #define _FP_NANFRAC_S _FP_QNANBIT_S #define _FP_NANFRAC_D _FP_QNANBIT_D #define _FP_NANFRAC_E _FP_QNANBIT_E, 0 --- libgcc/config/i386/32/sfp-machine.h.jj 2022-10-03 18:00:53.290731980 +0200 +++ libgcc/config/i386/32/sfp-machine.h 2022-10-13 16:57:09.459768068 +0200 @@ -87,6 +87,7 @@ #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) #define _FP_NANFRAC_H _FP_QNANBIT_H +#define _FP_NANFRAC_B _FP_QNANBIT_B #define _FP_NANFRAC_S _FP_QNANBIT_S #define _FP_NANFRAC_D _FP_QNANBIT_D, 0 /* Even if XFmode is 12byte, we have to pad it to --- libgcc/soft-fp/brain.h.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/brain.h 2022-10-13 16:57:09.459768068 +0200 @@ -0,0 +1,172 @@ +/* Software floating-point emulation. + Definitions for Brain Floating Point format (bfloat16). + Copyright (C) 1997-2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#ifndef SOFT_FP_BRAIN_H +#define SOFT_FP_BRAIN_H 1 + +#if _FP_W_TYPE_SIZE < 32 +# error "Here's a nickel kid. Go buy yourself a real computer." +#endif + +#define _FP_FRACTBITS_B (_FP_W_TYPE_SIZE) + +#define _FP_FRACTBITS_DW_B (_FP_W_TYPE_SIZE) + +#define _FP_FRACBITS_B 8 +#define _FP_FRACXBITS_B (_FP_FRACTBITS_B - _FP_FRACBITS_B) +#define _FP_WFRACBITS_B (_FP_WORKBITS + _FP_FRACBITS_B) +#define _FP_WFRACXBITS_B (_FP_FRACTBITS_B - _FP_WFRACBITS_B) +#define _FP_EXPBITS_B 8 +#define _FP_EXPBIAS_B 127 +#define _FP_EXPMAX_B 255 + +#define _FP_QNANBIT_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-2)) +#define _FP_QNANBIT_SH_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-2+_FP_WORKBITS)) +#define _FP_IMPLBIT_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-1)) +#define _FP_IMPLBIT_SH_B ((_FP_W_TYPE) 1 << (_FP_FRACBITS_B-1+_FP_WORKBITS)) +#define _FP_OVERFLOW_B ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_B)) + +#define _FP_WFRACBITS_DW_B (2 * _FP_WFRACBITS_B) +#define _FP_WFRACXBITS_DW_B (_FP_FRACTBITS_DW_B - _FP_WFRACBITS_DW_B) +#define _FP_HIGHBIT_DW_B \ + ((_FP_W_TYPE) 1 << (_FP_WFRACBITS_DW_B - 1) % _FP_W_TYPE_SIZE) + +/* The implementation of _FP_MUL_MEAT_B and _FP_DIV_MEAT_B should be + chosen by the target machine. */ + +typedef float BFtype __attribute__ ((mode (BF))); + +union _FP_UNION_B +{ + BFtype flt; + struct _FP_STRUCT_LAYOUT + { +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned sign : 1; + unsigned exp : _FP_EXPBITS_B; + unsigned frac : _FP_FRACBITS_B - (_FP_IMPLBIT_B != 0); +#else + unsigned frac : _FP_FRACBITS_B - (_FP_IMPLBIT_B != 0); + unsigned exp : _FP_EXPBITS_B; + unsigned sign : 1; +#endif + } bits; +}; + +#define FP_DECL_B(X) _FP_DECL (1, X) +#define FP_UNPACK_RAW_B(X, val) _FP_UNPACK_RAW_1 (B, X, (val)) +#define FP_UNPACK_RAW_BP(X, val) _FP_UNPACK_RAW_1_P (B, X, (val)) +#define FP_PACK_RAW_B(val, X) _FP_PACK_RAW_1 (B, (val), X) +#define FP_PACK_RAW_BP(val, X) \ + do \ + { \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (B, (val), X); \ + } \ + while (0) + +#define FP_UNPACK_B(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1 (B, X, (val)); \ + _FP_UNPACK_CANONICAL (B, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_BP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1_P (B, X, (val)); \ + _FP_UNPACK_CANONICAL (B, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_SEMIRAW_B(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1 (B, X, (val)); \ + _FP_UNPACK_SEMIRAW (B, 1, X); \ + } \ + while (0) + +#define FP_UNPACK_SEMIRAW_BP(X, val) \ + do \ + { \ + _FP_UNPACK_RAW_1_P (B, X, (val)); \ + _FP_UNPACK_SEMIRAW (B, 1, X); \ + } \ + while (0) + +#define FP_PACK_B(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (B, 1, X); \ + _FP_PACK_RAW_1 (B, (val), X); \ + } \ + while (0) + +#define FP_PACK_BP(val, X) \ + do \ + { \ + _FP_PACK_CANONICAL (B, 1, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (B, (val), X); \ + } \ + while (0) + +#define FP_PACK_SEMIRAW_B(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (B, 1, X); \ + _FP_PACK_RAW_1 (B, (val), X); \ + } \ + while (0) + +#define FP_PACK_SEMIRAW_BP(val, X) \ + do \ + { \ + _FP_PACK_SEMIRAW (B, 1, X); \ + if (!FP_INHIBIT_RESULTS) \ + _FP_PACK_RAW_1_P (B, (val), X); \ + } \ + while (0) + +#define FP_TO_INT_B(r, X, rsz, rsg) _FP_TO_INT (B, 1, (r), X, (rsz), (rsg)) +#define FP_TO_INT_ROUND_B(r, X, rsz, rsg) \ + _FP_TO_INT_ROUND (B, 1, (r), X, (rsz), (rsg)) +#define FP_FROM_INT_B(X, r, rs, rt) _FP_FROM_INT (B, 1, X, (r), (rs), rt) + +/* BFmode arithmetic is not implemented. */ + +#define _FP_FRAC_HIGH_B(X) _FP_FRAC_HIGH_1 (X) +#define _FP_FRAC_HIGH_RAW_B(X) _FP_FRAC_HIGH_1 (X) +#define _FP_FRAC_HIGH_DW_B(X) _FP_FRAC_HIGH_1 (X) + +#define FP_CMP_EQ_B(r, X, Y, ex) _FP_CMP_EQ (B, 1, (r), X, Y, (ex)) + +#endif /* !SOFT_FP_BRAIN_H */ --- libgcc/soft-fp/truncsfbf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/truncsfbf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,48 @@ +/* Software floating-point emulation. + Truncate IEEE single into bfloat16. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "brain.h" +#include "single.h" + +BFtype +__truncsfbf2 (SFtype a) +{ + FP_DECL_EX; + FP_DECL_S (A); + FP_DECL_B (R); + BFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_S (A, a); + FP_TRUNC (B, S, 1, 1, R, A); + FP_PACK_SEMIRAW_B (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/truncdfbf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/truncdfbf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,52 @@ +/* Software floating-point emulation. + Truncate IEEE double into bfloat16. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "brain.h" +#include "double.h" + +BFtype +__truncdfbf2 (DFtype a) +{ + FP_DECL_EX; + FP_DECL_D (A); + FP_DECL_B (R); + BFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_D (A, a); +#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D + FP_TRUNC (B, D, 1, 2, R, A); +#else + FP_TRUNC (B, D, 1, 1, R, A); +#endif + FP_PACK_SEMIRAW_B (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/truncxfbf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/truncxfbf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,52 @@ +/* Software floating-point emulation. + Truncate IEEE extended into bfloat16. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "brain.h" +#include "extended.h" + +BFtype +__truncxfbf2 (XFtype a) +{ + FP_DECL_EX; + FP_DECL_E (A); + FP_DECL_B (R); + BFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_E (A, a); +#if _FP_W_TYPE_SIZE < 64 + FP_TRUNC (B, E, 1, 4, R, A); +#else + FP_TRUNC (B, E, 1, 2, R, A); +#endif + FP_PACK_SEMIRAW_B (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/trunctfbf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/trunctfbf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,52 @@ +/* Software floating-point emulation. + Truncate IEEE quad into bfloat16. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "brain.h" +#include "quad.h" + +BFtype +__trunctfbf2 (TFtype a) +{ + FP_DECL_EX; + FP_DECL_Q (A); + FP_DECL_B (R); + BFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_SEMIRAW_Q (A, a); +#if _FP_W_TYPE_SIZE < 64 + FP_TRUNC (B, Q, 1, 4, R, A); +#else + FP_TRUNC (B, Q, 1, 2, R, A); +#endif + FP_PACK_SEMIRAW_B (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/trunchfbf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/trunchfbf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,58 @@ +/* Software floating-point emulation. + Truncate IEEE half into bfloat16. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "brain.h" +#include "half.h" +#include "single.h" + +/* BFtype and HFtype are unordered, neither is a superset or subset + of each other. Convert HFtype to SFtype (lossless) and then + truncate to BFtype. */ + +BFtype +__trunchfbf2 (HFtype a) +{ + FP_DECL_EX; + FP_DECL_H (A); + FP_DECL_S (B); + FP_DECL_B (R); + SFtype b; + BFtype r; + + FP_INIT_ROUNDMODE; + FP_UNPACK_RAW_H (A, a); + FP_EXTEND (S, H, 1, 1, B, A); + FP_PACK_RAW_S (b, B); + FP_UNPACK_SEMIRAW_S (B, b); + FP_TRUNC (B, S, 1, 1, R, B); + FP_PACK_SEMIRAW_B (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/truncbfhf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/truncbfhf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,75 @@ +/* Software floating-point emulation. + Truncate bfloat16 into IEEE half. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#include "soft-fp.h" +#include "half.h" +#include "brain.h" +#include "single.h" + +/* BFtype and HFtype are unordered, neither is a superset or subset + of each other. Convert BFtype to SFtype (lossless) and then + truncate to HFtype. */ + +HFtype +__truncbfhf2 (BFtype a) +{ + FP_DECL_EX; + FP_DECL_H (A); + FP_DECL_S (B); + FP_DECL_B (R); + SFtype b; + HFtype r; + + FP_INIT_ROUNDMODE; + /* Optimize BFtype to SFtype conversion to simple left shift + by 16 if possible, we don't need to raise exceptions on sNaN + here as the SFtype to HFtype truncation should do that too. */ + if (sizeof (BFtype) == 2 + && sizeof (unsigned short) == 2 + && sizeof (SFtype) == 4 + && sizeof (unsigned int) == 4) + { + union { BFtype a; unsigned short b; } u1; + union { SFtype a; unsigned int b; } u2; + u1.a = a; + u2.b = (u1.b << 8) << 8; + b = u2.a; + } + else + { + FP_UNPACK_RAW_B (A, a); + FP_EXTEND (S, B, 1, 1, B, A); + FP_PACK_RAW_S (b, B); + } + FP_UNPACK_SEMIRAW_S (B, b); + FP_TRUNC (H, S, 1, 1, R, B); + FP_PACK_SEMIRAW_H (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libgcc/soft-fp/extendbfsf2.c.jj 2022-10-13 16:57:09.460768054 +0200 +++ libgcc/soft-fp/extendbfsf2.c 2022-10-13 16:57:09.460768054 +0200 @@ -0,0 +1,49 @@ +/* Software floating-point emulation. + Return an bfloat16 converted to IEEE single + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file into + combinations with other programs, and to distribute those + combinations without any restriction coming from the use of this + file. (The Lesser General Public License restrictions do apply in + other respects; for example, they cover modification of the file, + and distribution when not linked into a combine executable.) + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + . */ + +#define FP_NO_EXACT_UNDERFLOW +#include "soft-fp.h" +#include "brain.h" +#include "single.h" + +SFtype +__extendbfsf2 (BFtype a) +{ + FP_DECL_EX; + FP_DECL_B (A); + FP_DECL_S (R); + SFtype r; + + FP_INIT_EXCEPTIONS; + FP_UNPACK_RAW_B (A, a); + FP_EXTEND (S, B, 1, 1, R, A); + FP_PACK_RAW_S (r, R); + FP_HANDLE_EXCEPTIONS; + + return r; +} --- libiberty/cp-demangle.h.jj 2022-10-03 18:00:53.342731278 +0200 +++ libiberty/cp-demangle.h 2022-10-13 16:57:09.488767670 +0200 @@ -180,7 +180,7 @@ d_advance (struct d_info *di, int i) extern const struct demangle_operator_info cplus_demangle_operators[]; #endif -#define D_BUILTIN_TYPE_COUNT (35) +#define D_BUILTIN_TYPE_COUNT (36) CP_STATIC_IF_GLIBCPP_V3 const struct demangle_builtin_type_info --- libiberty/cp-demangle.c.jj 2022-10-11 14:50:14.605771753 +0200 +++ libiberty/cp-demangle.c 2022-10-13 16:57:09.538766983 +0200 @@ -2487,6 +2487,7 @@ cplus_demangle_builtin_types[D_BUILTIN_T /* 33 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"), D_PRINT_DEFAULT }, /* 34 */ { NL ("_Float"), NL ("_Float"), D_PRINT_FLOAT }, + /* 35 */ { NL ("std::bfloat16_t"), NL ("std::bfloat16_t"), D_PRINT_FLOAT }, }; CP_STATIC_IF_GLIBCPP_V3 @@ -2751,11 +2752,22 @@ cplus_demangle_type (struct d_info *di) case 'F': /* DF_ - _Float. - DFx - _Floatx. */ + DFx - _Floatx + DF16b - std::bfloat16_t. */ { int arg = d_number (di); char buf[12]; char suffix = 0; + if (d_peek_char (di) == 'b') + { + if (arg != 16) + return NULL; + d_advance (di, 1); + ret = d_make_builtin_type (di, + &cplus_demangle_builtin_types[35]); + di->expansion += ret->u.s_builtin.type->len; + break; + } if (d_peek_char (di) == 'x') suffix = 'x'; if (!suffix && d_peek_char (di) != '_') --- libiberty/testsuite/demangle-expected.jj 2022-10-11 14:50:14.618771575 +0200 +++ libiberty/testsuite/demangle-expected 2022-10-13 16:57:09.553766778 +0200 @@ -1249,6 +1249,10 @@ xxx _Z3xxxDF32xDF64xDF128xCDF32xVb xxx(_Float32x, _Float64x, _Float128x, _Float32x _Complex, bool volatile) xxx +--format=auto --no-params +_Z3xxxDF16b +xxx(std::bfloat16_t) +xxx # https://sourceware.org/bugzilla/show_bug.cgi?id=16817 --format=auto --no-params _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z