From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 109133 invoked by alias); 2 Jan 2018 18:30:59 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 109124 invoked by uid 89); 2 Jan 2018 18:30:58 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-16.2 required=5.0 tests=AWL,BAYES_00,GIT_PATCH_1,GIT_PATCH_2,GIT_PATCH_3,KAM_ASCII_DIVIDERS,KAM_SHORT,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.2 spammy=9028, 46187, orig X-HELO: mail-wm0-f68.google.com Received: from mail-wm0-f68.google.com (HELO mail-wm0-f68.google.com) (74.125.82.68) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 02 Jan 2018 18:30:51 +0000 Received: by mail-wm0-f68.google.com with SMTP id a79so23377044wma.0 for ; Tue, 02 Jan 2018 10:30:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:mail-followup-to:cc:subject:references :date:in-reply-to:message-id:user-agent:mime-version; bh=zMP7oo3T2N01NkodLn251ye9ZmtaPVQVLMT5hXf1y9M=; b=SHL78+r/EqySQYgd3K5/8mnDwKsyeNuB82fT+5bIAu+iJL9Er1dW7cLQSmk6Njc9Cf TO0j9C/pGXXMt2vTZ8p9P0OR4jwCjAgHtUy4m2skQMMyCNpxUWVNA6kybhCdqXFixiRE +tqwgFaUlf8jeQyY4gK/gevvtuCpxAw/KHFTDLjIrn4KT+QI4/3sscGfIpPEygX3Iy0g lZrtfKBAO2t4UdRmHGxZ4vXMW6LNIHcNxUkYMzR/5MNlQrqTts0WPL8ba+0ZEudPigzW 1AeLAEg0D5kMGvAXt+4vSc3mjZkU+TtdvtZ1tSor8z51hji+mZf1FdiXnmdq/jSN/NwT 3l9A== X-Gm-Message-State: AKGB3mLLWo5mPZs1acZkGAtvZapC6iHadfwMMBxHcSasRh/MtUAXBIYV HPDzN+3cRXLm3kIWuXK5mV856MsXH5c= X-Google-Smtp-Source: ACJfBos545k4KQl2ePaHDMFDLUc7cmjQ4kKuwwHLbPb/Fc1UVjFvN5A+hDyh9zwjZZumfc23oUfKpA== X-Received: by 10.28.150.12 with SMTP id y12mr39197804wmd.95.1514917848018; Tue, 02 Jan 2018 10:30:48 -0800 (PST) Received: from localhost ([95.144.14.233]) by smtp.gmail.com with ESMTPSA id y137sm31867370wme.0.2018.01.02.10.30.45 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 02 Jan 2018 10:30:46 -0800 (PST) From: Richard Sandiford To: Richard Biener Mail-Followup-To: Richard Biener ,GCC Patches , richard.sandiford@linaro.org Cc: GCC Patches Subject: Re: [07/13] Make vec_perm_indices use new vector encoding References: <87indfmrgt.fsf@linaro.org> <87lgiblc9q.fsf@linaro.org> <87efo0q780.fsf@linaro.org> <87zi6d1pef.fsf@linaro.org> Date: Tue, 02 Jan 2018 18:30:00 -0000 In-Reply-To: (Richard Biener's message of "Tue, 2 Jan 2018 14:15:45 +0100") Message-ID: <87po6snmej.fsf@linaro.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SW-Source: 2018-01/txt/msg00062.txt.bz2 Richard Biener writes: > On Wed, Dec 20, 2017 at 2:48 PM, Richard Sandiford > wrote: >> Richard Biener writes: >>> On Tue, Dec 12, 2017 at 4:46 PM, Richard Sandiford >>> wrote: >>>> Richard Biener writes: >>>>> On Sun, Dec 10, 2017 at 12:20 AM, Richard Sandiford >>>>> wrote: >>>>>> This patch changes vec_perm_indices from a plain vec<> to a class >>>>>> that stores a canonicalised permutation, using the same encoding >>>>>> as for VECTOR_CSTs. This means that vec_perm_indices now carries >>>>>> information about the number of vectors being permuted (currently >>>>>> always 1 or 2) and the number of elements in each input vector. >>>>> >>>>> Before I dive into the C++ details can you explain why it needs this >>>>> info and how it encodes it for variable-length vectors? To interleave >>>>> two vectors you need sth like { 0, N, 1, N+1, ... }, I'm not sure we >>>>> can directly encode N here, can we? extract even/odd should just >>>>> work as { 0, 2, 4, 6, ...} without knowledge of whether we permute >>>>> one or two vectors (the one vector case just has two times the same >>>>> vector) or how many elements each of the vectors (or the result) has. >>>> >>>> One of the later patches switches the element types to HOST_WIDE_INT, >>>> so that we can represent all ssizetypes. Then there's a poly_int >>>> patch (not yet posted) to make that poly_int64, so that we can >>>> represent the N even for variable-length vectors. >>>> >>>> The class needs to know the number of elements because that affects >>>> the canonical representation. E.g. extract even on fixed-length >>>> vectors with both inputs the same should be { 0, 2, 4, ..., 0, 2, 4 ... }, >>>> which we can't encode as a simple series. Interleave low with both >>>> inputs the same should be { 0, 0, 1, 1, ... } for both fixed-length and >>>> variable-length vectors. >>> >>> Huh? extract even is { 0, 2, 4, 6, 8 ... } indexes in the selection vector >>> are referencing concat'ed input vectors. So yes, for two same vectors >>> that's effectively { 0, 2, 4, ..., 0, 2, 4, ... } but I don't see why >>> that should >>> be the canonical form? >> >> Current practice is to use the single-input form where possible, >> if both inputs are the same (see e.g. the VEC_PERM_EXPR handling >> in fold-const.c). It means that things like: >> >> _1 = VEC_PERM_EXPR ; >> _2 = VEC_PERM_EXPR ; >> _3 = VEC_PERM_EXPR ; >> >> get folded to the same sequence, and so can be CSEd. >> >> We could instead convert the single-input form to use the two-input >> selector, but that would be harder. The advantage of treating the >> single-input form as canonical is that it works even for irregular >> permutes. > > Ok, I see. Maybe adding a comment along this helps. OK, thanks, installed as below with that change. Richard 2018-01-02 Richard Sandiford gcc/ * int-vector-builder.h: New file. * vec-perm-indices.h: Include int-vector-builder.h. (vec_perm_indices): Redefine as an int_vector_builder. (auto_vec_perm_indices): Delete. (vec_perm_builder): Redefine as a stand-alone class. (vec_perm_indices::vec_perm_indices): New function. (vec_perm_indices::clamp): Likewise. * vec-perm-indices.c: Include fold-const.h and tree-vector-builder.h. (vec_perm_indices::new_vector): New function. (vec_perm_indices::new_expanded_vector): Update for new vec_perm_indices class. (vec_perm_indices::rotate_inputs): New function. (vec_perm_indices::all_in_range_p): Operate directly on the encoded form, without computing elided elements. (tree_to_vec_perm_builder): Operate directly on the VECTOR_CST encoding. Update for new vec_perm_indices class. * optabs.c (expand_vec_perm_const): Create a vec_perm_indices for the given vec_perm_builder. (expand_vec_perm_var): Update vec_perm_builder constructor. (expand_mult_highpart): Use vec_perm_builder instead of auto_vec_perm_indices. * optabs-query.c (can_mult_highpart_p): Use vec_perm_builder and vec_perm_indices instead of auto_vec_perm_indices. Use a single or double series encoding as appropriate. * fold-const.c (fold_ternary_loc): Use vec_perm_builder and vec_perm_indices instead of auto_vec_perm_indices. * tree-ssa-forwprop.c (simplify_vector_constructor): Likewise. * tree-vect-data-refs.c (vect_grouped_store_supported): Likewise. (vect_permute_store_chain): Likewise. (vect_grouped_load_supported): Likewise. (vect_permute_load_chain): Likewise. (vect_shift_permute_load_chain): Likewise. * tree-vect-slp.c (vect_build_slp_tree_1): Likewise. (vect_transform_slp_perm_load): Likewise. (vect_schedule_slp_instance): Likewise. * tree-vect-stmts.c (perm_mask_for_reverse): Likewise. (vectorizable_mask_load_store): Likewise. (vectorizable_bswap): Likewise. (vectorizable_store): Likewise. (vectorizable_load): Likewise. * tree-vect-generic.c (lower_vec_perm): Use vec_perm_builder and vec_perm_indices instead of auto_vec_perm_indices. Use tree_to_vec_perm_builder to read the vector from a tree. * tree-vect-loop.c (calc_vec_perm_mask_for_shift): Take a vec_perm_builder instead of a vec_perm_indices. (have_whole_vector_shift): Use vec_perm_builder and vec_perm_indices instead of auto_vec_perm_indices. Leave the truncation to calc_vec_perm_mask_for_shift. (vect_create_epilog_for_reduction): Likewise. * config/aarch64/aarch64.c (expand_vec_perm_d::perm): Change from auto_vec_perm_indices to vec_perm_indices. (aarch64_expand_vec_perm_const_1): Use rotate_inputs on d.perm instead of changing individual elements. (aarch64_vectorize_vec_perm_const): Use new_vector to install the vector in d.perm. * config/arm/arm.c (expand_vec_perm_d::perm): Change from auto_vec_perm_indices to vec_perm_indices. (arm_expand_vec_perm_const_1): Use rotate_inputs on d.perm instead of changing individual elements. (arm_vectorize_vec_perm_const): Use new_vector to install the vector in d.perm. * config/powerpcspe/powerpcspe.c (rs6000_expand_extract_even): Update vec_perm_builder constructor. (rs6000_expand_interleave): Likewise. * config/rs6000/rs6000.c (rs6000_expand_extract_even): Likewise. (rs6000_expand_interleave): Likewise. ------------------------------------------------------------------------------ Index: gcc/int-vector-builder.h =================================================================== --- /dev/null 2017-12-30 11:27:13.464311244 +0000 +++ gcc/int-vector-builder.h 2018-01-02 17:01:28.746627393 +0000 @@ -0,0 +1,90 @@ +/* A class for building vector integer constants. + Copyright (C) 2017 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC 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 General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +. */ + +#ifndef GCC_INT_VECTOR_BUILDER_H +#define GCC_INT_VECTOR_BUILDER_H 1 + +#include "vector-builder.h" + +/* This class is used to build vectors of integer type T using the same + encoding as tree and rtx constants. See vector_builder for more + details. */ +template +class int_vector_builder : public vector_builder > +{ + typedef vector_builder parent; + friend class vector_builder; + +public: + int_vector_builder () {} + int_vector_builder (unsigned int, unsigned int, unsigned int); + + using parent::new_vector; + +private: + bool equal_p (T, T) const; + bool allow_steps_p () const { return true; } + bool integral_p (T) const { return true; } + T step (T, T) const; + T apply_step (T, unsigned int, T) const; + bool can_elide_p (T) const { return true; } + void note_representative (T *, T) {} +}; + +/* Create a new builder for a vector with FULL_NELTS elements. + Initially encode the value as NPATTERNS interleaved patterns with + NELTS_PER_PATTERN elements each. */ + +template +inline +int_vector_builder::int_vector_builder (unsigned int full_nelts, + unsigned int npatterns, + unsigned int nelts_per_pattern) +{ + new_vector (full_nelts, npatterns, nelts_per_pattern); +} + +/* Return true if elements ELT1 and ELT2 are equal. */ + +template +inline bool +int_vector_builder::equal_p (T elt1, T elt2) const +{ + return elt1 == elt2; +} + +/* Return the value of element ELT2 minus the value of element ELT1. */ + +template +inline T +int_vector_builder::step (T elt1, T elt2) const +{ + return elt2 - elt1; +} + +/* Return a vector element with the value BASE + FACTOR * STEP. */ + +template +inline T +int_vector_builder::apply_step (T base, unsigned int factor, T step) const +{ + return base + factor * step; +} + +#endif Index: gcc/vec-perm-indices.h =================================================================== --- gcc/vec-perm-indices.h 2018-01-02 17:01:26.633719678 +0000 +++ gcc/vec-perm-indices.h 2018-01-02 18:25:11.081076126 +0000 @@ -20,30 +20,117 @@ Software Foundation; either version 3, o #ifndef GCC_VEC_PERN_INDICES_H #define GCC_VEC_PERN_INDICES_H 1 +#include "int-vector-builder.h" + +/* A vector_builder for building constant permutation vectors. + The elements do not need to be clamped to a particular range + of input elements. */ +typedef int_vector_builder vec_perm_builder; + /* This class represents a constant permutation vector, such as that used - as the final operand to a VEC_PERM_EXPR. */ -class vec_perm_indices : public auto_vec + as the final operand to a VEC_PERM_EXPR. + + Permutation vectors select indices modulo the number of input elements, + and the class canonicalizes each permutation vector for a particular + number of input vectors and for a particular number of elements per + input. For example, the gimple statements: + + _1 = VEC_PERM_EXPR ; + _2 = VEC_PERM_EXPR ; + _3 = VEC_PERM_EXPR ; + + effectively have only a single vector input "a". If "a" has 8 + elements, the indices select elements modulo 8, which makes all three + VEC_PERM_EXPRs equivalent. The canonical form is for the indices to be + in the range [0, number of input elements - 1], so the class treats the + second and third permutation vectors as though they had been the first. + + The class copes with cases in which the input and output vectors have + different numbers of elements. */ +class vec_perm_indices { - typedef unsigned short element_type; - typedef auto_vec parent_type; + typedef HOST_WIDE_INT element_type; public: - vec_perm_indices () {} - vec_perm_indices (unsigned int nunits) : parent_type (nunits) {} + vec_perm_indices (); + vec_perm_indices (const vec_perm_builder &, unsigned int, unsigned int); + void new_vector (const vec_perm_builder &, unsigned int, unsigned int); void new_expanded_vector (const vec_perm_indices &, unsigned int); + void rotate_inputs (int delta); + + /* Return the underlying vector encoding. */ + const vec_perm_builder &encoding () const { return m_encoding; } + + /* Return the number of output elements. This is called length () + so that we present a more vec-like interface. */ + unsigned int length () const { return m_encoding.full_nelts (); } + /* Return the number of input vectors being permuted. */ + unsigned int ninputs () const { return m_ninputs; } + + /* Return the number of elements in each input vector. */ + unsigned int nelts_per_input () const { return m_nelts_per_input; } + + /* Return the total number of input elements. */ + unsigned int input_nelts () const { return m_ninputs * m_nelts_per_input; } + + element_type clamp (element_type) const; + element_type operator[] (unsigned int i) const; bool all_in_range_p (element_type, element_type) const; private: vec_perm_indices (const vec_perm_indices &); -}; -/* Temporary. */ -typedef vec_perm_indices vec_perm_builder; -typedef vec_perm_indices auto_vec_perm_indices; + vec_perm_builder m_encoding; + unsigned int m_ninputs; + unsigned int m_nelts_per_input; +}; bool tree_to_vec_perm_builder (vec_perm_builder *, tree); rtx vec_perm_indices_to_rtx (machine_mode, const vec_perm_indices &); +inline +vec_perm_indices::vec_perm_indices () + : m_ninputs (0), + m_nelts_per_input (0) +{ +} + +/* Construct a permutation vector that selects between NINPUTS vector + inputs that have NELTS_PER_INPUT elements each. Take the elements of + the new vector from ELEMENTS, clamping each one to be in range. */ + +inline +vec_perm_indices::vec_perm_indices (const vec_perm_builder &elements, + unsigned int ninputs, + unsigned int nelts_per_input) +{ + new_vector (elements, ninputs, nelts_per_input); +} + +/* Return the canonical value for permutation vector element ELT, + taking into account the current number of input elements. */ + +inline vec_perm_indices::element_type +vec_perm_indices::clamp (element_type elt) const +{ + element_type limit = input_nelts (); + elt %= limit; + /* Treat negative elements as counting from the end. This only matters + if the vector size is not a power of 2. */ + if (elt < 0) + elt += limit; + return elt; +} + +/* Return the value of vector element I, which might or might not be + explicitly encoded. */ + +inline vec_perm_indices::element_type +vec_perm_indices::operator[] (unsigned int i) const +{ + return clamp (m_encoding.elt (i)); +} + #endif Index: gcc/vec-perm-indices.c =================================================================== --- gcc/vec-perm-indices.c 2018-01-02 17:01:26.632719721 +0000 +++ gcc/vec-perm-indices.c 2018-01-02 17:01:28.750627219 +0000 @@ -22,11 +22,33 @@ Software Foundation; either version 3, o #include "coretypes.h" #include "vec-perm-indices.h" #include "tree.h" +#include "fold-const.h" +#include "tree-vector-builder.h" #include "backend.h" #include "rtl.h" #include "memmodel.h" #include "emit-rtl.h" +/* Switch to a new permutation vector that selects between NINPUTS vector + inputs that have NELTS_PER_INPUT elements each. Take the elements of the + new permutation vector from ELEMENTS, clamping each one to be in range. */ + +void +vec_perm_indices::new_vector (const vec_perm_builder &elements, + unsigned int ninputs, + unsigned int nelts_per_input) +{ + m_ninputs = ninputs; + m_nelts_per_input = nelts_per_input; + /* Expand the encoding and clamp each element. E.g. { 0, 2, 4, ... } + might wrap halfway if there is only one vector input. */ + unsigned int full_nelts = elements.full_nelts (); + m_encoding.new_vector (full_nelts, full_nelts, 1); + for (unsigned int i = 0; i < full_nelts; ++i) + m_encoding.quick_push (clamp (elements.elt (i))); + m_encoding.finalize (); +} + /* Switch to a new permutation vector that selects the same input elements as ORIG, but with each element split into FACTOR pieces. For example, if ORIG is { 1, 2, 0, 3 } and FACTOR is 2, the new permutation is @@ -36,14 +58,31 @@ Software Foundation; either version 3, o vec_perm_indices::new_expanded_vector (const vec_perm_indices &orig, unsigned int factor) { - truncate (0); - reserve (orig.length () * factor); - for (unsigned int i = 0; i < orig.length (); ++i) + m_ninputs = orig.m_ninputs; + m_nelts_per_input = orig.m_nelts_per_input * factor; + m_encoding.new_vector (orig.m_encoding.full_nelts () * factor, + orig.m_encoding.npatterns () * factor, + orig.m_encoding.nelts_per_pattern ()); + unsigned int encoded_nelts = orig.m_encoding.encoded_nelts (); + for (unsigned int i = 0; i < encoded_nelts; ++i) { - element_type base = orig[i] * factor; + element_type base = orig.m_encoding[i] * factor; for (unsigned int j = 0; j < factor; ++j) - quick_push (base + j); + m_encoding.quick_push (base + j); } + m_encoding.finalize (); +} + +/* Rotate the inputs of the permutation right by DELTA inputs. This changes + the values of the permutation vector but it doesn't change the way that + the elements are encoded. */ + +void +vec_perm_indices::rotate_inputs (int delta) +{ + element_type element_delta = delta * m_nelts_per_input; + for (unsigned int i = 0; i < m_encoding.length (); ++i) + m_encoding[i] = clamp (m_encoding[i] + element_delta); } /* Return true if all elements of the permutation vector are in the range @@ -52,9 +91,44 @@ vec_perm_indices::new_expanded_vector (c bool vec_perm_indices::all_in_range_p (element_type start, element_type size) const { - for (unsigned int i = 0; i < length (); ++i) - if ((*this)[i] < start || ((*this)[i] - start) >= size) + /* Check the first two elements of each pattern. */ + unsigned int npatterns = m_encoding.npatterns (); + unsigned int nelts_per_pattern = m_encoding.nelts_per_pattern (); + unsigned int base_nelts = npatterns * MIN (nelts_per_pattern, 2); + for (unsigned int i = 0; i < base_nelts; ++i) + if (m_encoding[i] < start || (m_encoding[i] - start) >= size) return false; + + /* For stepped encodings, check the full range of the series. */ + if (nelts_per_pattern == 3) + { + element_type limit = input_nelts (); + + /* The number of elements in each pattern beyond the first two + that we checked above. */ + unsigned int step_nelts = (m_encoding.full_nelts () / npatterns) - 2; + for (unsigned int i = 0; i < npatterns; ++i) + { + /* BASE1 has been checked but BASE2 hasn't. */ + element_type base1 = m_encoding[i + npatterns]; + element_type base2 = m_encoding[i + base_nelts]; + + /* The step to add to get from BASE1 to each subsequent value. */ + element_type step = clamp (base2 - base1); + + /* STEP has no inherent sign, so a value near LIMIT can + act as a negative step. The series is in range if it + is in range according to one of the two interpretations. + + Since we're dealing with clamped values, ELEMENT_TYPE is + wide enough for overflow not to be a problem. */ + element_type headroom_down = base1 - start; + element_type headroom_up = size - headroom_down - 1; + if (headroom_up < step * step_nelts + && headroom_down < (limit - step) * step_nelts) + return false; + } + } return true; } @@ -65,15 +139,16 @@ vec_perm_indices::all_in_range_p (elemen bool tree_to_vec_perm_builder (vec_perm_builder *builder, tree cst) { - unsigned int nelts = TYPE_VECTOR_SUBPARTS (TREE_TYPE (cst)); - for (unsigned int i = 0; i < nelts; ++i) - if (!tree_fits_shwi_p (vector_cst_elt (cst, i))) + unsigned int encoded_nelts = vector_cst_encoded_nelts (cst); + for (unsigned int i = 0; i < encoded_nelts; ++i) + if (!tree_fits_shwi_p (VECTOR_CST_ENCODED_ELT (cst, i))) return false; - builder->reserve (nelts); - for (unsigned int i = 0; i < nelts; ++i) - builder->quick_push (tree_to_shwi (vector_cst_elt (cst, i)) - & (2 * nelts - 1)); + builder->new_vector (TYPE_VECTOR_SUBPARTS (TREE_TYPE (cst)), + VECTOR_CST_NPATTERNS (cst), + VECTOR_CST_NELTS_PER_PATTERN (cst)); + for (unsigned int i = 0; i < encoded_nelts; ++i) + builder->quick_push (tree_to_shwi (VECTOR_CST_ENCODED_ELT (cst, i))); return true; } Index: gcc/optabs.c =================================================================== --- gcc/optabs.c 2018-01-02 17:01:27.762670303 +0000 +++ gcc/optabs.c 2018-01-02 17:01:28.747627350 +0000 @@ -5476,6 +5476,11 @@ expand_vec_perm_const (machine_mode mode rtx_insn *last = get_last_insn (); bool single_arg_p = rtx_equal_p (v0, v1); + /* Always specify two input vectors here and leave the target to handle + cases in which the inputs are equal. Not all backends can cope with + the single-input representation when testing for a double-input + target instruction. */ + vec_perm_indices indices (sel, 2, GET_MODE_NUNITS (mode)); /* See if this can be handled with a vec_shr. We only do this if the second vector is all zeroes. */ @@ -5488,7 +5493,7 @@ expand_vec_perm_const (machine_mode mode && (shift_code != CODE_FOR_nothing || shift_code_qi != CODE_FOR_nothing)) { - rtx shift_amt = shift_amt_for_vec_perm_mask (mode, sel); + rtx shift_amt = shift_amt_for_vec_perm_mask (mode, indices); if (shift_amt) { struct expand_operand ops[3]; @@ -5520,7 +5525,7 @@ expand_vec_perm_const (machine_mode mode else v1 = force_reg (mode, v1); - if (targetm.vectorize.vec_perm_const (mode, target, v0, v1, sel)) + if (targetm.vectorize.vec_perm_const (mode, target, v0, v1, indices)) return target; } @@ -5529,7 +5534,7 @@ expand_vec_perm_const (machine_mode mode rtx target_qi = NULL_RTX, v0_qi = NULL_RTX, v1_qi = NULL_RTX; if (qimode != VOIDmode) { - qimode_indices.new_expanded_vector (sel, GET_MODE_UNIT_SIZE (mode)); + qimode_indices.new_expanded_vector (indices, GET_MODE_UNIT_SIZE (mode)); target_qi = gen_reg_rtx (qimode); v0_qi = gen_lowpart (qimode, v0); v1_qi = gen_lowpart (qimode, v1); @@ -5556,7 +5561,7 @@ expand_vec_perm_const (machine_mode mode REQUIRED_SEL_MODE is OK. */ if (sel_mode != required_sel_mode) { - if (!selector_fits_mode_p (required_sel_mode, sel)) + if (!selector_fits_mode_p (required_sel_mode, indices)) { delete_insns_since (last); return NULL_RTX; @@ -5567,7 +5572,7 @@ expand_vec_perm_const (machine_mode mode insn_code icode = direct_optab_handler (vec_perm_optab, mode); if (icode != CODE_FOR_nothing) { - rtx sel_rtx = vec_perm_indices_to_rtx (sel_mode, sel); + rtx sel_rtx = vec_perm_indices_to_rtx (sel_mode, indices); rtx tmp = expand_vec_perm_1 (icode, target, v0, v1, sel_rtx); if (tmp) return tmp; @@ -5642,7 +5647,7 @@ expand_vec_perm_var (machine_mode mode, gcc_assert (sel != NULL); /* Broadcast the low byte each element into each of its bytes. */ - vec_perm_builder const_sel (w); + vec_perm_builder const_sel (w, w, 1); for (i = 0; i < w; ++i) { int this_e = i / u * u; @@ -5890,7 +5895,7 @@ expand_mult_highpart (machine_mode mode, expand_insn (optab_handler (tab2, mode), 3, eops); m2 = gen_lowpart (mode, eops[0].value); - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); if (method == 2) { for (i = 0; i < nunits; ++i) Index: gcc/optabs-query.c =================================================================== --- gcc/optabs-query.c 2018-01-02 17:01:27.761670346 +0000 +++ gcc/optabs-query.c 2018-01-02 17:01:28.746627393 +0000 @@ -516,12 +516,13 @@ can_mult_highpart_p (machine_mode mode, op = uns_p ? vec_widen_umult_odd_optab : vec_widen_smult_odd_optab; if (optab_handler (op, mode) != CODE_FOR_nothing) { - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); for (i = 0; i < nunits; ++i) sel.quick_push (!BYTES_BIG_ENDIAN + (i & ~1) + ((i & 1) ? nunits : 0)); - if (can_vec_perm_const_p (mode, sel)) + vec_perm_indices indices (sel, 2, nunits); + if (can_vec_perm_const_p (mode, indices)) return 2; } } @@ -532,10 +533,11 @@ can_mult_highpart_p (machine_mode mode, op = uns_p ? vec_widen_umult_lo_optab : vec_widen_smult_lo_optab; if (optab_handler (op, mode) != CODE_FOR_nothing) { - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); for (i = 0; i < nunits; ++i) sel.quick_push (2 * i + (BYTES_BIG_ENDIAN ? 0 : 1)); - if (can_vec_perm_const_p (mode, sel)) + vec_perm_indices indices (sel, 2, nunits); + if (can_vec_perm_const_p (mode, indices)) return 3; } } Index: gcc/fold-const.c =================================================================== --- gcc/fold-const.c 2018-01-02 17:01:26.628719897 +0000 +++ gcc/fold-const.c 2018-01-02 17:01:28.746627393 +0000 @@ -11373,7 +11373,7 @@ fold_ternary_loc (location_t loc, enum t { unsigned int nelts = VECTOR_CST_NELTS (arg0), i; gcc_assert (nelts == TYPE_VECTOR_SUBPARTS (type)); - auto_vec_perm_indices sel (nelts); + vec_perm_builder sel (nelts, nelts, 1); for (i = 0; i < nelts; i++) { tree val = VECTOR_CST_ELT (arg0, i); @@ -11384,7 +11384,8 @@ fold_ternary_loc (location_t loc, enum t else /* Currently unreachable. */ return NULL_TREE; } - tree t = fold_vec_perm (type, arg1, arg2, sel); + tree t = fold_vec_perm (type, arg1, arg2, + vec_perm_indices (sel, 2, nelts)); if (t != NULL_TREE) return t; } @@ -11716,8 +11717,8 @@ fold_ternary_loc (location_t loc, enum t mask2 = 2 * nelts - 1; mask = single_arg ? (nelts - 1) : mask2; gcc_assert (nelts == TYPE_VECTOR_SUBPARTS (type)); - auto_vec_perm_indices sel (nelts); - auto_vec_perm_indices sel2 (nelts); + vec_perm_builder sel (nelts, nelts, 1); + vec_perm_builder sel2 (nelts, nelts, 1); for (i = 0; i < nelts; i++) { tree val = VECTOR_CST_ELT (arg2, i); @@ -11762,12 +11763,13 @@ fold_ternary_loc (location_t loc, enum t need_mask_canon = true; } + vec_perm_indices indices (sel, 2, nelts); if ((TREE_CODE (op0) == VECTOR_CST || TREE_CODE (op0) == CONSTRUCTOR) && (TREE_CODE (op1) == VECTOR_CST || TREE_CODE (op1) == CONSTRUCTOR)) { - tree t = fold_vec_perm (type, op0, op1, sel); + tree t = fold_vec_perm (type, op0, op1, indices); if (t != NULL_TREE) return t; } @@ -11779,11 +11781,14 @@ fold_ternary_loc (location_t loc, enum t argument permutation while still allowing an equivalent 2-argument version. */ if (need_mask_canon && arg2 == op2 - && !can_vec_perm_const_p (TYPE_MODE (type), sel, false) - && can_vec_perm_const_p (TYPE_MODE (type), sel2, false)) + && !can_vec_perm_const_p (TYPE_MODE (type), indices, false) + && can_vec_perm_const_p (TYPE_MODE (type), + vec_perm_indices (sel2, 2, nelts), + false)) { need_mask_canon = need_mask_canon2; - sel = sel2; + sel.truncate (0); + sel.splice (sel2); } if (need_mask_canon && arg2 == op2) Index: gcc/tree-ssa-forwprop.c =================================================================== --- gcc/tree-ssa-forwprop.c 2018-01-02 17:01:26.630719809 +0000 +++ gcc/tree-ssa-forwprop.c 2018-01-02 17:01:28.747627350 +0000 @@ -2018,7 +2018,7 @@ simplify_vector_constructor (gimple_stmt elem_type = TREE_TYPE (type); elem_size = TREE_INT_CST_LOW (TYPE_SIZE (elem_type)); - auto_vec_perm_indices sel (nelts); + vec_perm_builder sel (nelts, nelts, 1); orig = NULL; conv_code = ERROR_MARK; maybe_ident = true; @@ -2109,7 +2109,8 @@ simplify_vector_constructor (gimple_stmt { tree mask_type; - if (!can_vec_perm_const_p (TYPE_MODE (type), sel)) + vec_perm_indices indices (sel, 1, nelts); + if (!can_vec_perm_const_p (TYPE_MODE (type), indices)) return false; mask_type = build_vector_type (build_nonstandard_integer_type (elem_size, 1), Index: gcc/tree-vect-data-refs.c =================================================================== --- gcc/tree-vect-data-refs.c 2018-01-02 17:01:26.630719809 +0000 +++ gcc/tree-vect-data-refs.c 2018-01-02 17:01:28.748627306 +0000 @@ -4579,7 +4579,7 @@ vect_grouped_store_supported (tree vecty if (VECTOR_MODE_P (mode)) { unsigned int i, nelt = GET_MODE_NUNITS (mode); - auto_vec_perm_indices sel (nelt); + vec_perm_builder sel (nelt, nelt, 1); sel.quick_grow (nelt); if (count == 3) @@ -4587,6 +4587,7 @@ vect_grouped_store_supported (tree vecty unsigned int j0 = 0, j1 = 0, j2 = 0; unsigned int i, j; + vec_perm_indices indices; for (j = 0; j < 3; j++) { int nelt0 = ((3 - j) * nelt) % 3; @@ -4601,7 +4602,8 @@ vect_grouped_store_supported (tree vecty if (3 * i + nelt2 < nelt) sel[3 * i + nelt2] = 0; } - if (!can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (mode, indices)) { if (dump_enabled_p ()) dump_printf (MSG_MISSED_OPTIMIZATION, @@ -4618,7 +4620,8 @@ vect_grouped_store_supported (tree vecty if (3 * i + nelt2 < nelt) sel[3 * i + nelt2] = nelt + j2++; } - if (!can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (mode, indices)) { if (dump_enabled_p ()) dump_printf (MSG_MISSED_OPTIMIZATION, @@ -4638,11 +4641,13 @@ vect_grouped_store_supported (tree vecty sel[i * 2] = i; sel[i * 2 + 1] = i + nelt; } - if (can_vec_perm_const_p (mode, sel)) + vec_perm_indices indices (sel, 2, nelt); + if (can_vec_perm_const_p (mode, indices)) { for (i = 0; i < nelt; i++) sel[i] += nelt / 2; - if (can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (can_vec_perm_const_p (mode, indices)) return true; } } @@ -4744,7 +4749,7 @@ vect_permute_store_chain (vec dr_c unsigned int i, n, log_length = exact_log2 (length); unsigned int j, nelt = TYPE_VECTOR_SUBPARTS (vectype); - auto_vec_perm_indices sel (nelt); + vec_perm_builder sel (nelt, nelt, 1); sel.quick_grow (nelt); result_chain->quick_grow (length); @@ -4755,6 +4760,7 @@ vect_permute_store_chain (vec dr_c { unsigned int j0 = 0, j1 = 0, j2 = 0; + vec_perm_indices indices; for (j = 0; j < 3; j++) { int nelt0 = ((3 - j) * nelt) % 3; @@ -4770,7 +4776,8 @@ vect_permute_store_chain (vec dr_c if (3 * i + nelt2 < nelt) sel[3 * i + nelt2] = 0; } - perm3_mask_low = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm3_mask_low = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < nelt; i++) { @@ -4781,7 +4788,8 @@ vect_permute_store_chain (vec dr_c if (3 * i + nelt2 < nelt) sel[3 * i + nelt2] = nelt + j2++; } - perm3_mask_high = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm3_mask_high = vect_gen_perm_mask_checked (vectype, indices); vect1 = dr_chain[0]; vect2 = dr_chain[1]; @@ -4818,11 +4826,13 @@ vect_permute_store_chain (vec dr_c sel[i * 2] = i; sel[i * 2 + 1] = i + nelt; } - perm_mask_high = vect_gen_perm_mask_checked (vectype, sel); + vec_perm_indices indices (sel, 2, nelt); + perm_mask_high = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < nelt; i++) sel[i] += nelt / 2; - perm_mask_low = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm_mask_low = vect_gen_perm_mask_checked (vectype, indices); for (i = 0, n = log_length; i < n; i++) { @@ -5167,11 +5177,12 @@ vect_grouped_load_supported (tree vectyp if (VECTOR_MODE_P (mode)) { unsigned int i, j, nelt = GET_MODE_NUNITS (mode); - auto_vec_perm_indices sel (nelt); + vec_perm_builder sel (nelt, nelt, 1); sel.quick_grow (nelt); if (count == 3) { + vec_perm_indices indices; unsigned int k; for (k = 0; k < 3; k++) { @@ -5180,7 +5191,8 @@ vect_grouped_load_supported (tree vectyp sel[i] = 3 * i + k; else sel[i] = 0; - if (!can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (mode, indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, @@ -5193,7 +5205,8 @@ vect_grouped_load_supported (tree vectyp sel[i] = i; else sel[i] = nelt + ((nelt + k) % 3) + 3 * (j++); - if (!can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (mode, indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, @@ -5208,13 +5221,16 @@ vect_grouped_load_supported (tree vectyp { /* If length is not equal to 3 then only power of 2 is supported. */ gcc_assert (pow2p_hwi (count)); + for (i = 0; i < nelt; i++) sel[i] = i * 2; - if (can_vec_perm_const_p (mode, sel)) + vec_perm_indices indices (sel, 2, nelt); + if (can_vec_perm_const_p (mode, indices)) { for (i = 0; i < nelt; i++) sel[i] = i * 2 + 1; - if (can_vec_perm_const_p (mode, sel)) + indices.new_vector (sel, 2, nelt); + if (can_vec_perm_const_p (mode, indices)) return true; } } @@ -5329,7 +5345,7 @@ vect_permute_load_chain (vec dr_ch unsigned int i, j, log_length = exact_log2 (length); unsigned nelt = TYPE_VECTOR_SUBPARTS (vectype); - auto_vec_perm_indices sel (nelt); + vec_perm_builder sel (nelt, nelt, 1); sel.quick_grow (nelt); result_chain->quick_grow (length); @@ -5340,6 +5356,7 @@ vect_permute_load_chain (vec dr_ch { unsigned int k; + vec_perm_indices indices; for (k = 0; k < 3; k++) { for (i = 0; i < nelt; i++) @@ -5347,15 +5364,16 @@ vect_permute_load_chain (vec dr_ch sel[i] = 3 * i + k; else sel[i] = 0; - perm3_mask_low = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm3_mask_low = vect_gen_perm_mask_checked (vectype, indices); for (i = 0, j = 0; i < nelt; i++) if (3 * i + k < 2 * nelt) sel[i] = i; else sel[i] = nelt + ((nelt + k) % 3) + 3 * (j++); - - perm3_mask_high = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm3_mask_high = vect_gen_perm_mask_checked (vectype, indices); first_vect = dr_chain[0]; second_vect = dr_chain[1]; @@ -5387,11 +5405,13 @@ vect_permute_load_chain (vec dr_ch for (i = 0; i < nelt; ++i) sel[i] = i * 2; - perm_mask_even = vect_gen_perm_mask_checked (vectype, sel); + vec_perm_indices indices (sel, 2, nelt); + perm_mask_even = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < nelt; ++i) sel[i] = i * 2 + 1; - perm_mask_odd = vect_gen_perm_mask_checked (vectype, sel); + indices.new_vector (sel, 2, nelt); + perm_mask_odd = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < log_length; i++) { @@ -5527,7 +5547,7 @@ vect_shift_permute_load_chain (vec stmt_vec_info stmt_info = vinfo_for_stmt (stmt); loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info); - auto_vec_perm_indices sel (nelt); + vec_perm_builder sel (nelt, nelt, 1); sel.quick_grow (nelt); result_chain->quick_grow (length); @@ -5541,7 +5561,8 @@ vect_shift_permute_load_chain (vec sel[i] = i * 2; for (i = 0; i < nelt / 2; ++i) sel[nelt / 2 + i] = i * 2 + 1; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + vec_perm_indices indices (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, @@ -5549,13 +5570,14 @@ vect_shift_permute_load_chain (vec supported by target\n"); return false; } - perm2_mask1 = vect_gen_perm_mask_checked (vectype, sel); + perm2_mask1 = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < nelt / 2; ++i) sel[i] = i * 2 + 1; for (i = 0; i < nelt / 2; ++i) sel[nelt / 2 + i] = i * 2; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, @@ -5563,20 +5585,21 @@ vect_shift_permute_load_chain (vec supported by target\n"); return false; } - perm2_mask2 = vect_gen_perm_mask_checked (vectype, sel); + perm2_mask2 = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to shift all elements. For vector length 8 it is {4 5 6 7 8 9 10 11}. */ for (i = 0; i < nelt; i++) sel[i] = nelt / 2 + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "shift permutation is not supported by target\n"); return false; } - shift1_mask = vect_gen_perm_mask_checked (vectype, sel); + shift1_mask = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to select vector from 2. For vector length 8 it is {0 1 2 3 12 13 14 15}. */ @@ -5584,14 +5607,15 @@ vect_shift_permute_load_chain (vec sel[i] = i; for (i = nelt / 2; i < nelt; i++) sel[i] = nelt + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "select is not supported by target\n"); return false; } - select_mask = vect_gen_perm_mask_checked (vectype, sel); + select_mask = vect_gen_perm_mask_checked (vectype, indices); for (i = 0; i < log_length; i++) { @@ -5647,7 +5671,8 @@ vect_shift_permute_load_chain (vec sel[i] = 3 * k + (l % 3); k++; } - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + vec_perm_indices indices (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, @@ -5655,59 +5680,63 @@ vect_shift_permute_load_chain (vec supported by target\n"); return false; } - perm3_mask = vect_gen_perm_mask_checked (vectype, sel); + perm3_mask = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to shift all elements. For vector length 8 it is {6 7 8 9 10 11 12 13}. */ for (i = 0; i < nelt; i++) sel[i] = 2 * (nelt / 3) + (nelt % 3) + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "shift permutation is not supported by target\n"); return false; } - shift1_mask = vect_gen_perm_mask_checked (vectype, sel); + shift1_mask = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to shift all elements. For vector length 8 it is {5 6 7 8 9 10 11 12}. */ for (i = 0; i < nelt; i++) sel[i] = 2 * (nelt / 3) + 1 + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "shift permutation is not supported by target\n"); return false; } - shift2_mask = vect_gen_perm_mask_checked (vectype, sel); + shift2_mask = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to shift all elements. For vector length 8 it is {3 4 5 6 7 8 9 10}. */ for (i = 0; i < nelt; i++) sel[i] = (nelt / 3) + (nelt % 3) / 2 + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "shift permutation is not supported by target\n"); return false; } - shift3_mask = vect_gen_perm_mask_checked (vectype, sel); + shift3_mask = vect_gen_perm_mask_checked (vectype, indices); /* Generating permutation constant to shift all elements. For vector length 8 it is {5 6 7 8 9 10 11 12}. */ for (i = 0; i < nelt; i++) sel[i] = 2 * (nelt / 3) + (nelt % 3) / 2 + i; - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, "shift permutation is not supported by target\n"); return false; } - shift4_mask = vect_gen_perm_mask_checked (vectype, sel); + shift4_mask = vect_gen_perm_mask_checked (vectype, indices); for (k = 0; k < 3; k++) { Index: gcc/tree-vect-slp.c =================================================================== --- gcc/tree-vect-slp.c 2018-01-02 17:01:26.632719721 +0000 +++ gcc/tree-vect-slp.c 2018-01-02 17:01:28.749627263 +0000 @@ -894,7 +894,7 @@ vect_build_slp_tree_1 (vec_info *vinfo, && TREE_CODE_CLASS (alt_stmt_code) != tcc_reference) { unsigned int count = TYPE_VECTOR_SUBPARTS (vectype); - auto_vec_perm_indices sel (count); + vec_perm_builder sel (count, count, 1); for (i = 0; i < count; ++i) { unsigned int elt = i; @@ -902,7 +902,8 @@ vect_build_slp_tree_1 (vec_info *vinfo, elt += count; sel.quick_push (elt); } - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + vec_perm_indices indices (sel, 2, count); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) { for (i = 0; i < group_size; ++i) if (gimple_assign_rhs_code (stmts[i]) == alt_stmt_code) @@ -3570,8 +3571,9 @@ vect_transform_slp_perm_load (slp_tree n (int_mode_for_mode (TYPE_MODE (TREE_TYPE (vectype))).require (), 1); mask_type = get_vectype_for_scalar_type (mask_element_type); nunits = TYPE_VECTOR_SUBPARTS (vectype); - auto_vec_perm_indices mask (nunits); + vec_perm_builder mask (nunits, nunits, 1); mask.quick_grow (nunits); + vec_perm_indices indices; /* Initialize the vect stmts of NODE to properly insert the generated stmts later. */ @@ -3644,10 +3646,10 @@ vect_transform_slp_perm_load (slp_tree n noop_p = false; mask[index++] = mask_element; - if (index == nunits) + if (index == nunits && !noop_p) { - if (! noop_p - && ! can_vec_perm_const_p (mode, mask)) + indices.new_vector (mask, 2, nunits); + if (!can_vec_perm_const_p (mode, indices)) { if (dump_enabled_p ()) { @@ -3655,16 +3657,19 @@ vect_transform_slp_perm_load (slp_tree n vect_location, "unsupported vect permute { "); for (i = 0; i < nunits; ++i) - dump_printf (MSG_MISSED_OPTIMIZATION, "%d ", mask[i]); + dump_printf (MSG_MISSED_OPTIMIZATION, + HOST_WIDE_INT_PRINT_DEC " ", mask[i]); dump_printf (MSG_MISSED_OPTIMIZATION, "}\n"); } gcc_assert (analyze_only); return false; } - if (! noop_p) - ++*n_perms; + ++*n_perms; + } + if (index == nunits) + { if (!analyze_only) { tree mask_vec = NULL_TREE; @@ -3797,7 +3802,7 @@ vect_schedule_slp_instance (slp_tree nod enum tree_code code0 = gimple_assign_rhs_code (stmt); enum tree_code ocode = ERROR_MARK; gimple *ostmt; - auto_vec_perm_indices mask (group_size); + vec_perm_builder mask (group_size, group_size, 1); FOR_EACH_VEC_ELT (SLP_TREE_SCALAR_STMTS (node), i, ostmt) if (gimple_assign_rhs_code (ostmt) != code0) { Index: gcc/tree-vect-stmts.c =================================================================== --- gcc/tree-vect-stmts.c 2018-01-02 17:01:26.632719721 +0000 +++ gcc/tree-vect-stmts.c 2018-01-02 17:01:28.750627219 +0000 @@ -1717,13 +1717,14 @@ perm_mask_for_reverse (tree vectype) nunits = TYPE_VECTOR_SUBPARTS (vectype); - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); for (i = 0; i < nunits; ++i) sel.quick_push (nunits - 1 - i); - if (!can_vec_perm_const_p (TYPE_MODE (vectype), sel)) + vec_perm_indices indices (sel, 1, nunits); + if (!can_vec_perm_const_p (TYPE_MODE (vectype), indices)) return NULL_TREE; - return vect_gen_perm_mask_checked (vectype, sel); + return vect_gen_perm_mask_checked (vectype, indices); } /* A subroutine of get_load_store_type, with a subset of the same @@ -2185,27 +2186,32 @@ vectorizable_mask_load_store (gimple *st { modifier = WIDEN; - auto_vec_perm_indices sel (gather_off_nunits); + vec_perm_builder sel (gather_off_nunits, gather_off_nunits, 1); for (i = 0; i < gather_off_nunits; ++i) sel.quick_push (i | nunits); - perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, sel); + vec_perm_indices indices (sel, 1, gather_off_nunits); + perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, + indices); } else if (nunits == gather_off_nunits * 2) { modifier = NARROW; - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); sel.quick_grow (nunits); for (i = 0; i < nunits; ++i) sel[i] = i < gather_off_nunits ? i : i + nunits - gather_off_nunits; + vec_perm_indices indices (sel, 2, nunits); + perm_mask = vect_gen_perm_mask_checked (vectype, indices); - perm_mask = vect_gen_perm_mask_checked (vectype, sel); ncopies *= 2; + for (i = 0; i < nunits; ++i) sel[i] = i | gather_off_nunits; - mask_perm_mask = vect_gen_perm_mask_checked (masktype, sel); + indices.new_vector (sel, 2, gather_off_nunits); + mask_perm_mask = vect_gen_perm_mask_checked (masktype, indices); } else gcc_unreachable (); @@ -2498,12 +2504,13 @@ vectorizable_bswap (gimple *stmt, gimple unsigned int num_bytes = TYPE_VECTOR_SUBPARTS (char_vectype); unsigned word_bytes = num_bytes / nunits; - auto_vec_perm_indices elts (num_bytes); + vec_perm_builder elts (num_bytes, num_bytes, 1); for (unsigned i = 0; i < nunits; ++i) for (unsigned j = 0; j < word_bytes; ++j) elts.quick_push ((i + 1) * word_bytes - j - 1); - if (!can_vec_perm_const_p (TYPE_MODE (char_vectype), elts)) + vec_perm_indices indices (elts, 1, num_bytes); + if (!can_vec_perm_const_p (TYPE_MODE (char_vectype), indices)) return false; if (! vec_stmt) @@ -5826,22 +5833,25 @@ vectorizable_store (gimple *stmt, gimple { modifier = WIDEN; - auto_vec_perm_indices sel (scatter_off_nunits); + vec_perm_builder sel (scatter_off_nunits, scatter_off_nunits, 1); for (i = 0; i < (unsigned int) scatter_off_nunits; ++i) sel.quick_push (i | nunits); - perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, sel); + vec_perm_indices indices (sel, 1, scatter_off_nunits); + perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, + indices); gcc_assert (perm_mask != NULL_TREE); } else if (nunits == (unsigned int) scatter_off_nunits * 2) { modifier = NARROW; - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); for (i = 0; i < (unsigned int) nunits; ++i) sel.quick_push (i | scatter_off_nunits); - perm_mask = vect_gen_perm_mask_checked (vectype, sel); + vec_perm_indices indices (sel, 2, nunits); + perm_mask = vect_gen_perm_mask_checked (vectype, indices); gcc_assert (perm_mask != NULL_TREE); ncopies *= 2; } @@ -6862,22 +6872,25 @@ vectorizable_load (gimple *stmt, gimple_ { modifier = WIDEN; - auto_vec_perm_indices sel (gather_off_nunits); + vec_perm_builder sel (gather_off_nunits, gather_off_nunits, 1); for (i = 0; i < gather_off_nunits; ++i) sel.quick_push (i | nunits); - perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, sel); + vec_perm_indices indices (sel, 1, gather_off_nunits); + perm_mask = vect_gen_perm_mask_checked (gs_info.offset_vectype, + indices); } else if (nunits == gather_off_nunits * 2) { modifier = NARROW; - auto_vec_perm_indices sel (nunits); + vec_perm_builder sel (nunits, nunits, 1); for (i = 0; i < nunits; ++i) sel.quick_push (i < gather_off_nunits ? i : i + nunits - gather_off_nunits); - perm_mask = vect_gen_perm_mask_checked (vectype, sel); + vec_perm_indices indices (sel, 2, nunits); + perm_mask = vect_gen_perm_mask_checked (vectype, indices); ncopies *= 2; } else Index: gcc/tree-vect-generic.c =================================================================== --- gcc/tree-vect-generic.c 2018-01-02 17:01:26.631719765 +0000 +++ gcc/tree-vect-generic.c 2018-01-02 17:01:28.748627306 +0000 @@ -1299,15 +1299,13 @@ lower_vec_perm (gimple_stmt_iterator *gs mask = gimple_assign_rhs1 (def_stmt); } - if (TREE_CODE (mask) == VECTOR_CST) - { - auto_vec_perm_indices sel_int (elements); - - for (i = 0; i < elements; ++i) - sel_int.quick_push (TREE_INT_CST_LOW (VECTOR_CST_ELT (mask, i)) - & (2 * elements - 1)); + vec_perm_builder sel_int; - if (can_vec_perm_const_p (TYPE_MODE (vect_type), sel_int)) + if (TREE_CODE (mask) == VECTOR_CST + && tree_to_vec_perm_builder (&sel_int, mask)) + { + vec_perm_indices indices (sel_int, 2, elements); + if (can_vec_perm_const_p (TYPE_MODE (vect_type), indices)) { gimple_assign_set_rhs3 (stmt, mask); update_stmt (stmt); @@ -1319,14 +1317,14 @@ lower_vec_perm (gimple_stmt_iterator *gs != CODE_FOR_nothing && TREE_CODE (vec1) == VECTOR_CST && initializer_zerop (vec1) - && sel_int[0] - && sel_int[0] < elements) + && indices[0] + && indices[0] < elements) { for (i = 1; i < elements; ++i) { - unsigned int expected = i + sel_int[0]; + unsigned int expected = i + indices[0]; /* Indices into the second vector are all equivalent. */ - if (MIN (elements, (unsigned) sel_int[i]) + if (MIN (elements, (unsigned) indices[i]) != MIN (elements, expected)) break; } Index: gcc/tree-vect-loop.c =================================================================== --- gcc/tree-vect-loop.c 2018-01-02 17:01:26.631719765 +0000 +++ gcc/tree-vect-loop.c 2018-01-02 17:01:28.749627263 +0000 @@ -3713,12 +3713,11 @@ vect_estimate_min_profitable_iters (loop vector elements (not bits) for a vector with NELT elements. */ static void calc_vec_perm_mask_for_shift (unsigned int offset, unsigned int nelt, - vec_perm_indices *sel) + vec_perm_builder *sel) { - unsigned int i; - - for (i = 0; i < nelt; i++) - sel->quick_push ((i + offset) & (2 * nelt - 1)); + sel->new_vector (nelt, nelt, 1); + for (unsigned int i = 0; i < nelt; i++) + sel->quick_push (i + offset); } /* Checks whether the target supports whole-vector shifts for vectors of mode @@ -3731,13 +3730,13 @@ have_whole_vector_shift (machine_mode mo return true; unsigned int i, nelt = GET_MODE_NUNITS (mode); - auto_vec_perm_indices sel (nelt); - + vec_perm_builder sel; + vec_perm_indices indices; for (i = nelt/2; i >= 1; i/=2) { - sel.truncate (0); calc_vec_perm_mask_for_shift (i, nelt, &sel); - if (!can_vec_perm_const_p (mode, sel, false)) + indices.new_vector (sel, 2, nelt); + if (!can_vec_perm_const_p (mode, indices, false)) return false; } return true; @@ -5055,7 +5054,8 @@ vect_create_epilog_for_reduction (vec= 1; elt_offset /= 2) { - sel.truncate (0); calc_vec_perm_mask_for_shift (elt_offset, nelements, &sel); - tree mask = vect_gen_perm_mask_any (vectype, sel); + indices.new_vector (sel, 2, nelements); + tree mask = vect_gen_perm_mask_any (vectype, indices); epilog_stmt = gimple_build_assign (vec_dest, VEC_PERM_EXPR, new_temp, zero_vec, mask); new_name = make_ssa_name (vec_dest, epilog_stmt); Index: gcc/config/aarch64/aarch64.c =================================================================== --- gcc/config/aarch64/aarch64.c 2018-01-02 17:01:26.602721036 +0000 +++ gcc/config/aarch64/aarch64.c 2018-01-02 17:01:28.736627829 +0000 @@ -13252,7 +13252,7 @@ #define MAX_VECT_LEN 16 struct expand_vec_perm_d { rtx target, op0, op1; - auto_vec_perm_indices perm; + vec_perm_indices perm; machine_mode vmode; bool one_vector_p; bool testing_p; @@ -13642,10 +13642,7 @@ aarch64_expand_vec_perm_const_1 (struct unsigned int nelt = d->perm.length (); if (d->perm[0] >= nelt) { - gcc_assert (nelt == (nelt & -nelt)); - for (unsigned int i = 0; i < nelt; ++i) - d->perm[i] ^= nelt; /* Keep the same index, but in the other vector. */ - + d->perm.rotate_inputs (1); std::swap (d->op0, d->op1); } @@ -13685,12 +13682,10 @@ aarch64_vectorize_vec_perm_const (machin /* Calculate whether all elements are in one vector. */ unsigned int nelt = sel.length (); - d.perm.reserve (nelt); for (i = which = 0; i < nelt; ++i) { unsigned int ei = sel[i] & (2 * nelt - 1); which |= (ei < nelt ? 1 : 2); - d.perm.quick_push (ei); } switch (which) @@ -13709,8 +13704,6 @@ aarch64_vectorize_vec_perm_const (machin input vector. */ /* Fall Through. */ case 2: - for (i = 0; i < nelt; ++i) - d.perm[i] &= nelt - 1; d.op0 = op1; d.one_vector_p = true; break; @@ -13721,6 +13714,8 @@ aarch64_vectorize_vec_perm_const (machin break; } + d.perm.new_vector (sel.encoding (), d.one_vector_p ? 1 : 2, nelt); + if (!d.testing_p) return aarch64_expand_vec_perm_const_1 (&d); Index: gcc/config/arm/arm.c =================================================================== --- gcc/config/arm/arm.c 2018-01-02 17:01:26.604720948 +0000 +++ gcc/config/arm/arm.c 2018-01-02 17:01:28.739627698 +0000 @@ -28854,7 +28854,7 @@ #define MAX_VECT_LEN 16 struct expand_vec_perm_d { rtx target, op0, op1; - auto_vec_perm_indices perm; + vec_perm_indices perm; machine_mode vmode; bool one_vector_p; bool testing_p; @@ -29362,9 +29362,7 @@ arm_expand_vec_perm_const_1 (struct expa unsigned int nelt = d->perm.length (); if (d->perm[0] >= nelt) { - for (unsigned int i = 0; i < nelt; ++i) - d->perm[i] = (d->perm[i] + nelt) & (2 * nelt - 1); - + d->perm.rotate_inputs (1); std::swap (d->op0, d->op1); } @@ -29404,12 +29402,10 @@ arm_vectorize_vec_perm_const (machine_mo d.testing_p = !target; nelt = GET_MODE_NUNITS (d.vmode); - d.perm.reserve (nelt); for (i = which = 0; i < nelt; ++i) { int ei = sel[i] & (2 * nelt - 1); which |= (ei < nelt ? 1 : 2); - d.perm.quick_push (ei); } switch (which) @@ -29428,8 +29424,6 @@ arm_vectorize_vec_perm_const (machine_mo input vector. */ /* FALLTHRU */ case 2: - for (i = 0; i < nelt; ++i) - d.perm[i] &= nelt - 1; d.op0 = op1; d.one_vector_p = true; break; @@ -29440,6 +29434,8 @@ arm_vectorize_vec_perm_const (machine_mo break; } + d.perm.new_vector (sel.encoding (), d.one_vector_p ? 1 : 2, nelt); + if (d.testing_p) return arm_expand_vec_perm_const_1 (&d); Index: gcc/config/powerpcspe/powerpcspe.c =================================================================== --- gcc/config/powerpcspe/powerpcspe.c 2018-01-02 17:01:26.617720379 +0000 +++ gcc/config/powerpcspe/powerpcspe.c 2018-01-02 17:01:28.742627568 +0000 @@ -38782,7 +38782,7 @@ rs6000_expand_extract_even (rtx target, { machine_mode vmode = GET_MODE (target); unsigned i, nelt = GET_MODE_NUNITS (vmode); - vec_perm_builder perm (nelt); + vec_perm_builder perm (nelt, nelt, 1); for (i = 0; i < nelt; i++) perm.quick_push (i * 2); @@ -38797,7 +38797,7 @@ rs6000_expand_interleave (rtx target, rt { machine_mode vmode = GET_MODE (target); unsigned i, high, nelt = GET_MODE_NUNITS (vmode); - vec_perm_builder perm (nelt); + vec_perm_builder perm (nelt, nelt, 1); high = (highp ? 0 : nelt / 2); for (i = 0; i < nelt / 2; i++) Index: gcc/config/rs6000/rs6000.c =================================================================== --- gcc/config/rs6000/rs6000.c 2018-01-02 17:01:26.621720203 +0000 +++ gcc/config/rs6000/rs6000.c 2018-01-02 17:01:28.745627437 +0000 @@ -36042,7 +36042,7 @@ rs6000_expand_extract_even (rtx target, { machine_mode vmode = GET_MODE (target); unsigned i, nelt = GET_MODE_NUNITS (vmode); - vec_perm_builder perm (nelt); + vec_perm_builder perm (nelt, nelt, 1); for (i = 0; i < nelt; i++) perm.quick_push (i * 2); @@ -36057,7 +36057,7 @@ rs6000_expand_interleave (rtx target, rt { machine_mode vmode = GET_MODE (target); unsigned i, high, nelt = GET_MODE_NUNITS (vmode); - vec_perm_builder perm (nelt); + vec_perm_builder perm (nelt, nelt, 1); high = (highp ? 0 : nelt / 2); for (i = 0; i < nelt / 2; i++)