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/* brig-lane-inst-handler.cc -- brig lane instruction handling
Copyright (C) 2016-2021 Free Software Foundation, Inc.
Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
for General Processor Tech.
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
<http://www.gnu.org/licenses/>. */
#include "brig-code-entry-handler.h"
#include "errors.h"
#include "diagnostic-core.h"
#include "brig-util.h"
brig_lane_inst_handler::brig_lane_inst_handler (brig_to_generic &parent)
: brig_code_entry_handler (parent)
{
}
size_t
brig_lane_inst_handler::operator () (const BrigBase *base)
{
const BrigInstLane &inst = *(const BrigInstLane *) base;
tree_stl_vec operands = build_operands (inst.base);
tree expr = NULL_TREE;
if (inst.base.opcode == BRIG_OPCODE_ACTIVELANECOUNT)
{
/* Because we are fixed to single WI per wave, it's enough to
just check the src value of the single work item itself. */
expr = build2 (NE_EXPR, uint32_type_node,
build_zero_cst (uint32_type_node), operands[1]);
}
else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEID)
{
expr = build_zero_cst (uint32_type_node);
}
else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEMASK)
{
tree u64_type = gccbrig_tree_type_for_hsa_type (BRIG_TYPE_U64);
tree zero_cst = build_zero_cst (u64_type);
expr = build2 (NE_EXPR, u64_type, zero_cst, operands[1]);
tree_stl_vec elements;
elements.push_back (expr);
elements.push_back (zero_cst);
elements.push_back (zero_cst);
elements.push_back (zero_cst);
expr = m_parent.m_cf->pack (elements);
}
else if (inst.base.opcode == BRIG_OPCODE_ACTIVELANEPERMUTE)
{
tree src = operands[1];
tree identity = operands[3];
tree use_identity = operands[4];
/* When WAVESIZE is 1, we either select the src of the work-item
itself or 'identity' in case use_identity is 1. */
tree cmp = build2 (EQ_EXPR, uint32_type_node,
build_int_cstu (TREE_TYPE (use_identity), 1),
use_identity);
expr = build3 (COND_EXPR, TREE_TYPE (src), cmp, identity, src);
}
else
gcc_unreachable ();
build_output_assignment (inst.base, operands[0], expr);
return base->byteCount;
}
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