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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2021. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include <string>
#include <vector>
#include <unordered_map>
#include <map>
extern "C"
{
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "sys.h"
#include "erl_vm.h"
#include "global.h"
#include "beam_jit_common.h"
}
class ArgVal {
BeamOpArg gen_op;
public:
enum TYPE {
u = TAG_u,
i = TAG_i,
x = TAG_x,
y = TAG_y,
f = TAG_f,
q = TAG_q,
e = TAG_r,
l = TAG_l /* float register */
};
ArgVal(const BeamOpArg &arg) {
gen_op = arg;
}
ArgVal(enum TYPE t, BeamInstr val) {
gen_op.type = t;
gen_op.val = val;
}
ArgVal(unsigned t, BeamInstr val) {
#ifdef DEBUG
switch (t) {
case TAG_u:
break;
case TAG_i:
break;
case TAG_x:
break;
case TAG_y:
break;
case TAG_f:
break;
case TAG_q:
break;
case TAG_r:
break;
case TAG_l:
break;
default:
ASSERT(0);
}
#endif
gen_op.type = t;
gen_op.val = val;
}
constexpr enum TYPE getType() const {
return (enum TYPE)gen_op.type;
}
constexpr uint64_t getValue() const {
return gen_op.val;
}
constexpr bool isMem() const {
return gen_op.type == x || gen_op.type == y;
}
constexpr bool isLiteral() const {
return gen_op.type == q;
}
constexpr bool isImmed() const {
return gen_op.type == i;
}
template<typename T>
ArgVal operator+(T val) const {
return ArgVal(gen_op.type, val + gen_op.val);
}
template<typename T>
ArgVal operator*(T val) const {
return ArgVal(gen_op.type, val * gen_op.val);
}
enum Relation { none, consecutive, reverse_consecutive };
static Relation register_relation(const ArgVal &arg1, const ArgVal &arg2) {
TYPE type = arg1.getType();
bool same_reg_types =
type == arg2.getType() && (type == TYPE::x || type == TYPE::y);
if (!same_reg_types) {
return none;
} else if (arg1.getValue() + 1 == arg2.getValue()) {
return consecutive;
} else if (arg1.getValue() == arg2.getValue() + 1) {
return reverse_consecutive;
} else {
return none;
}
};
};
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