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// Copyright (c) 2016 Google Inc.
//
// 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.
// This file contains utility functions for spv_parsed_operand_t.
#include "source/parsed_operand.h"
#include <cassert>
#include "source/util/hex_float.h"
namespace spvtools {
void EmitNumericLiteral(std::ostream* out, const spv_parsed_instruction_t& inst,
const spv_parsed_operand_t& operand) {
if (operand.type != SPV_OPERAND_TYPE_LITERAL_INTEGER &&
operand.type != SPV_OPERAND_TYPE_LITERAL_FLOAT &&
operand.type != SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER &&
operand.type != SPV_OPERAND_TYPE_OPTIONAL_LITERAL_INTEGER &&
operand.type != SPV_OPERAND_TYPE_OPTIONAL_TYPED_LITERAL_INTEGER)
return;
if (operand.num_words < 1) return;
// TODO(dneto): Support more than 64-bits at a time.
if (operand.num_words > 2) return;
const uint32_t word = inst.words[operand.offset];
if (operand.num_words == 1) {
switch (operand.number_kind) {
case SPV_NUMBER_SIGNED_INT:
*out << int32_t(word);
break;
case SPV_NUMBER_UNSIGNED_INT:
*out << word;
break;
case SPV_NUMBER_FLOATING:
switch (operand.fp_encoding) {
case SPV_FP_ENCODING_IEEE754_BINARY16:
*out << spvtools::utils::FloatProxy<spvtools::utils::Float16>(
uint16_t(word & 0xFFFF));
break;
case SPV_FP_ENCODING_IEEE754_BINARY32:
*out << spvtools::utils::FloatProxy<float>(word);
break;
case SPV_FP_ENCODING_FLOAT8_E4M3:
*out << spvtools::utils::FloatProxy<spvtools::utils::Float8_E4M3>(
uint8_t(word & 0xFF));
break;
case SPV_FP_ENCODING_FLOAT8_E5M2:
*out << spvtools::utils::FloatProxy<spvtools::utils::Float8_E5M2>(
uint8_t(word & 0xFF));
break;
case SPV_FP_ENCODING_BFLOAT16:
*out << spvtools::utils::FloatProxy<spvtools::utils::BFloat16>(
uint16_t(word & 0xFFFF));
break;
case SPV_FP_ENCODING_UNKNOWN:
switch (operand.number_bit_width) {
case 16:
*out << spvtools::utils::FloatProxy<spvtools::utils::Float16>(
uint16_t(word & 0xFFFF));
break;
case 32:
*out << spvtools::utils::FloatProxy<float>(word);
break;
}
default:
break;
}
break;
default:
break;
}
} else if (operand.num_words == 2) {
// Multi-word numbers are presented with lower order words first.
uint64_t bits =
uint64_t(word) | (uint64_t(inst.words[operand.offset + 1]) << 32);
switch (operand.number_kind) {
case SPV_NUMBER_SIGNED_INT:
*out << int64_t(bits);
break;
case SPV_NUMBER_UNSIGNED_INT:
*out << bits;
break;
case SPV_NUMBER_FLOATING:
// Assume only 64-bit floats.
*out << spvtools::utils::FloatProxy<double>(bits);
break;
default:
break;
}
}
}
} // namespace spvtools
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