86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
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/* brig-lane-inst-handler.cc -- brig lane instruction handling
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Copyright (C) 2016-2021 Free Software Foundation, Inc.
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Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
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for General Processor Tech.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "brig-code-entry-handler.h"
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#include "errors.h"
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#include "diagnostic-core.h"
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#include "brig-util.h"
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brig_lane_inst_handler::brig_lane_inst_handler (brig_to_generic &parent)
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: brig_code_entry_handler (parent)
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{
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}
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size_t
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brig_lane_inst_handler::operator () (const BrigBase *base)
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{
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const BrigInstLane &inst = *(const BrigInstLane *) base;
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tree_stl_vec operands = build_operands (inst.base);
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tree expr = NULL_TREE;
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if (inst.base.opcode == BRIG_OPCODE_ACTIVELANECOUNT)
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{
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/* Because we are fixed to single WI per wave, it's enough to
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just check the src value of the single work item itself. */
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expr = build2 (NE_EXPR, uint32_type_node,
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build_zero_cst (uint32_type_node), operands[1]);
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}
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else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEID)
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{
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expr = build_zero_cst (uint32_type_node);
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}
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else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEMASK)
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{
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tree u64_type = gccbrig_tree_type_for_hsa_type (BRIG_TYPE_U64);
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tree zero_cst = build_zero_cst (u64_type);
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expr = build2 (NE_EXPR, u64_type, zero_cst, operands[1]);
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tree_stl_vec elements;
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elements.push_back (expr);
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elements.push_back (zero_cst);
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elements.push_back (zero_cst);
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elements.push_back (zero_cst);
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expr = m_parent.m_cf->pack (elements);
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}
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else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEPERMUTE)
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{
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tree src = operands[1];
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tree identity = operands[3];
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tree use_identity = operands[4];
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/* When WAVESIZE is 1, we either select the src of the work-item
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itself or 'identity' in case use_identity is 1. */
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tree cmp = build2 (EQ_EXPR, uint32_type_node,
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build_int_cstu (TREE_TYPE (use_identity), 1),
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use_identity);
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expr = build3 (COND_EXPR, TREE_TYPE (src), cmp, identity, src);
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}
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else
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gcc_unreachable ();
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build_output_assignment (inst.base, operands[0], expr);
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return base->byteCount;
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}
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