From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by sourceware.org (Postfix) with ESMTPS id 7B6AA3858D39 for ; Mon, 27 Feb 2023 14:07:36 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 7B6AA3858D39 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 3BF76219F7; Mon, 27 Feb 2023 14:07:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1677506855; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=s3BSJVRGbWJUZiWRmh+H8DrQGcJlEU7EyYu6KVuo18E=; b=msXSmhxLN+LiXwm2OIXvYt9k7isGFz4l/Py057ILKEEp4NjmQkjcdB81fPZR4gpV67sUMl 1wg6q0w1da2EvYm6BDQF7GPD3SUtDGiWwi0DX5leZkD5r63sDb+NkX2FHqAbvMMgOfHmUo tSEHZsQGZivdUoseEminQD2xFYegYUU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1677506855; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=s3BSJVRGbWJUZiWRmh+H8DrQGcJlEU7EyYu6KVuo18E=; b=mVcfT2J0Yb+Z1dFP+LYYQu6zXi51lM8DQzDHmD0m7cW5DhZuwXGCZAC9gsQ4inejyE1L1k jDuMGqlRskuDE3Aw== Received: from wotan.suse.de (wotan.suse.de [10.160.0.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 143552C141; Mon, 27 Feb 2023 14:07:35 +0000 (UTC) Date: Mon, 27 Feb 2023 14:07:35 +0000 (UTC) From: Richard Biener To: Tamar Christina cc: gcc-patches@gcc.gnu.org, nd@arm.com, jlaw@ventanamicro.com Subject: Re: [PATCH 1/4]middle-end: Revert can_special_div_by_const changes [PR108583] In-Reply-To: Message-ID: References: User-Agent: Alpine 2.22 (LSU 394 2020-01-19) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-10.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,GIT_PATCH_0,KAM_LOTSOFHASH,SPF_HELO_NONE,SPF_PASS,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 List-Id: On Mon, 27 Feb 2023, Tamar Christina wrote: > Hi All, > > This reverts the changes for the CAN_SPECIAL_DIV_BY_CONST hook. > > Bootstrapped Regtested on aarch64-none-linux-gnu and no issues. > > Ok for master? OK (you don't need approval for such reversion). Thanks, Richard. > Thanks, > Tamar > > gcc/ChangeLog: > > PR target/108583 > * doc/tm.texi (TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST): Remove. > * doc/tm.texi.in: Likewise. > * explow.cc (round_push, align_dynamic_address): Revert previous patch. > * expmed.cc (expand_divmod): Likewise. > * expmed.h (expand_divmod): Likewise. > * expr.cc (force_operand, expand_expr_divmod): Likewise. > * optabs.cc (expand_doubleword_mod, expand_doubleword_divmod): Likewise. > * target.def (can_special_div_by_const): Remove. > * target.h: Remove tree-core.h include > * targhooks.cc (default_can_special_div_by_const): Remove. > * targhooks.h (default_can_special_div_by_const): Remove. > * tree-vect-generic.cc (expand_vector_operation): Remove hook. > * tree-vect-patterns.cc (vect_recog_divmod_pattern): Remove hook. > * tree-vect-stmts.cc (vectorizable_operation): Remove hook. > > --- inline copy of patch -- > diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi > index c6c891972d1e58cd163b259ba96a599d62326865..50a8872a6695b18b9bed0d393bacf733833633db 100644 > --- a/gcc/doc/tm.texi > +++ b/gcc/doc/tm.texi > @@ -6137,20 +6137,6 @@ instruction pattern. There is no need for the hook to handle these two > implementation approaches itself. > @end deftypefn > > -@deftypefn {Target Hook} bool TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST (enum @var{tree_code}, tree @var{vectype}, wide_int @var{constant}, rtx *@var{output}, rtx @var{in0}, rtx @var{in1}) > -This hook is used to test whether the target has a special method of > -division of vectors of type @var{vectype} using the value @var{constant}, > -and producing a vector of type @var{vectype}. The division > -will then not be decomposed by the vectorizer and kept as a div. > - > -When the hook is being used to test whether the target supports a special > -divide, @var{in0}, @var{in1}, and @var{output} are all null. When the hook > -is being used to emit a division, @var{in0} and @var{in1} are the source > -vectors of type @var{vecttype} and @var{output} is the destination vector of > -type @var{vectype}. > - > -Return true if the operation is possible, emitting instructions for it > -if rtxes are provided and updating @var{output}. > @end deftypefn > > @deftypefn {Target Hook} tree TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION (unsigned @var{code}, tree @var{vec_type_out}, tree @var{vec_type_in}) > diff --git a/gcc/doc/tm.texi.in b/gcc/doc/tm.texi.in > index 613b2534149415f442163d599503efaf423b673b..3e07978a02f4e6077adae6cadc93ea4273295f1f 100644 > --- a/gcc/doc/tm.texi.in > +++ b/gcc/doc/tm.texi.in > @@ -4173,7 +4173,6 @@ address; but often a machine-dependent strategy can generate better code. > > @hook TARGET_VECTORIZE_VEC_PERM_CONST > > -@hook TARGET_VECTORIZE_CAN_SPECIAL_DIV_BY_CONST > > @hook TARGET_VECTORIZE_BUILTIN_VECTORIZED_FUNCTION > > diff --git a/gcc/explow.cc b/gcc/explow.cc > index 83439b32abe1b9aa4b7983eb629804f97486acbd..be9195b33323ee5597fc212f0befa016eea4573c 100644 > --- a/gcc/explow.cc > +++ b/gcc/explow.cc > @@ -1037,7 +1037,7 @@ round_push (rtx size) > TRUNC_DIV_EXPR. */ > size = expand_binop (Pmode, add_optab, size, alignm1_rtx, > NULL_RTX, 1, OPTAB_LIB_WIDEN); > - size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, size, align_rtx, > + size = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, size, align_rtx, > NULL_RTX, 1); > size = expand_mult (Pmode, size, align_rtx, NULL_RTX, 1); > > @@ -1203,7 +1203,7 @@ align_dynamic_address (rtx target, unsigned required_align) > gen_int_mode (required_align / BITS_PER_UNIT - 1, > Pmode), > NULL_RTX, 1, OPTAB_LIB_WIDEN); > - target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, NULL, NULL, target, > + target = expand_divmod (0, TRUNC_DIV_EXPR, Pmode, target, > gen_int_mode (required_align / BITS_PER_UNIT, > Pmode), > NULL_RTX, 1); > diff --git a/gcc/expmed.h b/gcc/expmed.h > index 0419e2dac85850889ce0bee59515e31a80c582de..4dfe635c22ee49f2dba4c53640941628068f3901 100644 > --- a/gcc/expmed.h > +++ b/gcc/expmed.h > @@ -710,9 +710,8 @@ extern rtx expand_shift (enum tree_code, machine_mode, rtx, poly_int64, rtx, > 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, tree, tree, > - rtx, rtx, rtx, int, > - enum optab_methods = OPTAB_LIB_WIDEN); > +extern rtx expand_divmod (int, enum tree_code, machine_mode, rtx, rtx, > + rtx, int, enum optab_methods = OPTAB_LIB_WIDEN); > #endif > #endif > > diff --git a/gcc/expmed.cc b/gcc/expmed.cc > index 917360199ca56157cf3c3693b65e93cd9d8ed244..1553ea8e31eb6433025ab18a3a59c169d3b7692f 100644 > --- a/gcc/expmed.cc > +++ b/gcc/expmed.cc > @@ -4222,8 +4222,8 @@ expand_sdiv_pow2 (scalar_int_mode mode, rtx op0, HOST_WIDE_INT d) > > rtx > expand_divmod (int rem_flag, enum tree_code code, machine_mode mode, > - tree treeop0, tree treeop1, rtx op0, rtx op1, rtx target, > - int unsignedp, enum optab_methods methods) > + rtx op0, rtx op1, rtx target, int unsignedp, > + enum optab_methods methods) > { > machine_mode compute_mode; > rtx tquotient; > @@ -4375,17 +4375,6 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode, > > last_div_const = ! rem_flag && op1_is_constant ? INTVAL (op1) : 0; > > - /* Check if the target has specific expansions for the division. */ > - tree cst; > - if (treeop0 > - && treeop1 > - && (cst = uniform_integer_cst_p (treeop1)) > - && targetm.vectorize.can_special_div_by_const (code, TREE_TYPE (treeop0), > - wi::to_wide (cst), > - &target, op0, op1)) > - return target; > - > - > /* Now convert to the best mode to use. */ > if (compute_mode != mode) > { > @@ -4629,8 +4618,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode, > || (optab_handler (sdivmod_optab, int_mode) > != CODE_FOR_nothing))) > quotient = expand_divmod (0, TRUNC_DIV_EXPR, > - int_mode, treeop0, treeop1, > - op0, gen_int_mode (abs_d, > + int_mode, op0, > + gen_int_mode (abs_d, > int_mode), > NULL_RTX, 0); > else > @@ -4819,8 +4808,8 @@ expand_divmod (int rem_flag, enum tree_code code, machine_mode mode, > size - 1, NULL_RTX, 0); > t3 = force_operand (gen_rtx_MINUS (int_mode, t1, nsign), > NULL_RTX); > - t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, treeop0, > - treeop1, t3, op1, NULL_RTX, 0); > + t4 = expand_divmod (0, TRUNC_DIV_EXPR, int_mode, t3, op1, > + NULL_RTX, 0); > if (t4) > { > rtx t5; > diff --git a/gcc/expr.cc b/gcc/expr.cc > index 15be1c8db999103bb9e5fa33daa44ae06de5ace8..78d35297e755216339078d5b2280c6e277f26d72 100644 > --- a/gcc/expr.cc > +++ b/gcc/expr.cc > @@ -8207,17 +8207,16 @@ force_operand (rtx value, rtx target) > return expand_divmod (0, > FLOAT_MODE_P (GET_MODE (value)) > ? RDIV_EXPR : TRUNC_DIV_EXPR, > - GET_MODE (value), NULL, NULL, op1, op2, > - target, 0); > + GET_MODE (value), op1, op2, target, 0); > case MOD: > - return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL, > - op1, op2, target, 0); > + return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2, > + target, 0); > case UDIV: > - return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), NULL, NULL, > - op1, op2, target, 1); > + return expand_divmod (0, TRUNC_DIV_EXPR, GET_MODE (value), op1, op2, > + target, 1); > case UMOD: > - return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), NULL, NULL, > - op1, op2, target, 1); > + return expand_divmod (1, TRUNC_MOD_EXPR, GET_MODE (value), op1, op2, > + target, 1); > case ASHIFTRT: > return expand_simple_binop (GET_MODE (value), code, op1, op2, > target, 0, OPTAB_LIB_WIDEN); > @@ -9170,13 +9169,11 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0, > bool speed_p = optimize_insn_for_speed_p (); > do_pending_stack_adjust (); > start_sequence (); > - rtx uns_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1, > - op0, op1, target, 1); > + rtx uns_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 1); > rtx_insn *uns_insns = get_insns (); > end_sequence (); > start_sequence (); > - rtx sgn_ret = expand_divmod (mod_p, code, mode, treeop0, treeop1, > - op0, op1, target, 0); > + rtx sgn_ret = expand_divmod (mod_p, code, mode, op0, op1, target, 0); > rtx_insn *sgn_insns = get_insns (); > end_sequence (); > unsigned uns_cost = seq_cost (uns_insns, speed_p); > @@ -9198,8 +9195,7 @@ expand_expr_divmod (tree_code code, machine_mode mode, tree treeop0, > emit_insn (sgn_insns); > return sgn_ret; > } > - return expand_divmod (mod_p, code, mode, treeop0, treeop1, > - op0, op1, target, unsignedp); > + return expand_divmod (mod_p, code, mode, op0, op1, target, unsignedp); > } > > rtx > diff --git a/gcc/optabs.cc b/gcc/optabs.cc > index cf22bfec3f5513f56d22c866231edbf322ff6945..474ccbd7915b4f144cebe0369a6e77082c1e617b 100644 > --- a/gcc/optabs.cc > +++ b/gcc/optabs.cc > @@ -1106,9 +1106,8 @@ expand_doubleword_mod (machine_mode mode, rtx op0, rtx op1, bool unsignedp) > return NULL_RTX; > } > } > - rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, NULL, NULL, > - sum, gen_int_mode (INTVAL (op1), > - word_mode), > + rtx remainder = expand_divmod (1, TRUNC_MOD_EXPR, word_mode, sum, > + gen_int_mode (INTVAL (op1), word_mode), > NULL_RTX, 1, OPTAB_DIRECT); > if (remainder == NULL_RTX) > return NULL_RTX; > @@ -1211,8 +1210,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem, > > if (op11 != const1_rtx) > { > - rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, NULL, NULL, quot1, > - op11, NULL_RTX, unsignedp, OPTAB_DIRECT); > + rtx rem2 = expand_divmod (1, TRUNC_MOD_EXPR, mode, quot1, op11, > + NULL_RTX, unsignedp, OPTAB_DIRECT); > if (rem2 == NULL_RTX) > return NULL_RTX; > > @@ -1226,8 +1225,8 @@ expand_doubleword_divmod (machine_mode mode, rtx op0, rtx op1, rtx *rem, > if (rem2 == NULL_RTX) > return NULL_RTX; > > - rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, NULL, NULL, quot1, > - op11, NULL_RTX, unsignedp, OPTAB_DIRECT); > + rtx quot2 = expand_divmod (0, TRUNC_DIV_EXPR, mode, quot1, op11, > + NULL_RTX, unsignedp, OPTAB_DIRECT); > if (quot2 == NULL_RTX) > return NULL_RTX; > > diff --git a/gcc/target.def b/gcc/target.def > index db8af0cbe81624513f114fc9bbd8be61d855f409..e0a5c7adbd962f5d08ed08d1d81afa2c2baa64a5 100644 > --- a/gcc/target.def > +++ b/gcc/target.def > @@ -1905,25 +1905,6 @@ implementation approaches itself.", > const vec_perm_indices &sel), > NULL) > > -DEFHOOK > -(can_special_div_by_const, > - "This hook is used to test whether the target has a special method of\n\ > -division of vectors of type @var{vectype} using the value @var{constant},\n\ > -and producing a vector of type @var{vectype}. The division\n\ > -will then not be decomposed by the vectorizer and kept as a div.\n\ > -\n\ > -When the hook is being used to test whether the target supports a special\n\ > -divide, @var{in0}, @var{in1}, and @var{output} are all null. When the hook\n\ > -is being used to emit a division, @var{in0} and @var{in1} are the source\n\ > -vectors of type @var{vecttype} and @var{output} is the destination vector of\n\ > -type @var{vectype}.\n\ > -\n\ > -Return true if the operation is possible, emitting instructions for it\n\ > -if rtxes are provided and updating @var{output}.", > - bool, (enum tree_code, tree vectype, wide_int constant, rtx *output, > - rtx in0, rtx in1), > - default_can_special_div_by_const) > - > /* Return true if the target supports misaligned store/load of a > specific factor denoted in the third parameter. The last parameter > is true if the access is defined in a packed struct. */ > diff --git a/gcc/target.h b/gcc/target.h > index 03fd03a52075b4836159035ec14078c0aebdd7e9..93691882757232c514fca82b99f913158c2d47b1 100644 > --- a/gcc/target.h > +++ b/gcc/target.h > @@ -51,7 +51,6 @@ > #include "insn-codes.h" > #include "tm.h" > #include "hard-reg-set.h" > -#include "tree-core.h" > > #if CHECKING_P > > diff --git a/gcc/targhooks.h b/gcc/targhooks.h > index a1df260f5483dc84f18d8f12c5202484a32d5bb7..a6a4809ca91baa5d7fad2244549317a31390f0c2 100644 > --- a/gcc/targhooks.h > +++ b/gcc/targhooks.h > @@ -209,8 +209,6 @@ extern void default_addr_space_diagnose_usage (addr_space_t, location_t); > extern rtx default_addr_space_convert (rtx, tree, tree); > extern unsigned int default_case_values_threshold (void); > extern bool default_have_conditional_execution (void); > -extern bool default_can_special_div_by_const (enum tree_code, tree, wide_int, > - rtx *, rtx, rtx); > > extern bool default_libc_has_function (enum function_class, tree); > extern bool default_libc_has_fast_function (int fcode); > diff --git a/gcc/targhooks.cc b/gcc/targhooks.cc > index fe0116521feaf32187e7bc113bf93b1805852c79..211525720a620d6f533e2da91e03877337a931e7 100644 > --- a/gcc/targhooks.cc > +++ b/gcc/targhooks.cc > @@ -1840,14 +1840,6 @@ default_have_conditional_execution (void) > return HAVE_conditional_execution; > } > > -/* Default that no division by constant operations are special. */ > -bool > -default_can_special_div_by_const (enum tree_code, tree, wide_int, rtx *, rtx, > - rtx) > -{ > - return false; > -} > - > /* By default we assume that c99 functions are present at the runtime, > but sincos is not. */ > bool > diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc > index 166a248f4b9512d4c6fc8d760b458b7a467f7790..519a824ec727d4d4f28c14077dc3e970bed75ef6 100644 > --- a/gcc/tree-vect-generic.cc > +++ b/gcc/tree-vect-generic.cc > @@ -1237,17 +1237,6 @@ expand_vector_operation (gimple_stmt_iterator *gsi, tree type, tree compute_type > tree rhs2 = gimple_assign_rhs2 (assign); > tree ret; > > - /* Check if the target was going to handle it through the special > - division callback hook. */ > - tree cst = uniform_integer_cst_p (rhs2); > - if (cst && > - targetm.vectorize.can_special_div_by_const (code, type, > - wi::to_wide (cst), > - NULL, > - NULL_RTX, NULL_RTX)) > - return NULL_TREE; > - > - > if (!optimize > || !VECTOR_INTEGER_TYPE_P (type) > || TREE_CODE (rhs2) != VECTOR_CST > diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc > index 6934aebc69f231af24668f0a1c3d140e97f55487..1766ce277d6b88d8aa3be77e7c8abb504a10a735 100644 > --- a/gcc/tree-vect-patterns.cc > +++ b/gcc/tree-vect-patterns.cc > @@ -3913,14 +3913,6 @@ vect_recog_divmod_pattern (vec_info *vinfo, > > return pattern_stmt; > } > - else if ((cst = uniform_integer_cst_p (oprnd1)) > - && targetm.vectorize.can_special_div_by_const (rhs_code, vectype, > - wi::to_wide (cst), > - NULL, NULL_RTX, > - NULL_RTX)) > - { > - return NULL; > - } > > if (prec > HOST_BITS_PER_WIDE_INT > || integer_zerop (oprnd1)) > diff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc > index eb4ca1f184e374d177eb43d5eb93acf6e6a8fde9..3a0fb5ad898ad42c3867f0b9564fc4e066e50081 100644 > --- a/gcc/tree-vect-stmts.cc > +++ b/gcc/tree-vect-stmts.cc > @@ -6263,15 +6263,6 @@ vectorizable_operation (vec_info *vinfo, > } > target_support_p = (optab_handler (optab, vec_mode) > != CODE_FOR_nothing); > - tree cst; > - if (!target_support_p > - && op1 > - && (cst = uniform_integer_cst_p (op1))) > - target_support_p > - = targetm.vectorize.can_special_div_by_const (code, vectype, > - wi::to_wide (cst), > - NULL, NULL_RTX, > - NULL_RTX); > } > > bool using_emulated_vectors_p = vect_emulated_vector_p (vectype); > > > > > -- Richard Biener SUSE Software Solutions Germany GmbH, Frankenstrasse 146, 90461 Nuernberg, Germany; GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman; HRB 36809 (AG Nuernberg)