mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-22 19:50:05 +00:00
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
// Copyright (c) 2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This file contains utility functions for spv_parsed_operand_t.
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#include "parsed_operand.h"
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#include <cassert>
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#include "util/hex_float.h"
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namespace libspirv {
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void EmitNumericLiteral(std::ostream* out, const spv_parsed_instruction_t& inst,
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const spv_parsed_operand_t& operand) {
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assert(operand.type == SPV_OPERAND_TYPE_LITERAL_INTEGER ||
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operand.type == SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER);
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assert(1 <= operand.num_words);
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assert(operand.num_words <= 2);
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const uint32_t word = inst.words[operand.offset];
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if (operand.num_words == 1) {
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switch (operand.number_kind) {
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case SPV_NUMBER_SIGNED_INT:
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*out << int32_t(word);
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break;
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case SPV_NUMBER_UNSIGNED_INT:
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*out << word;
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break;
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case SPV_NUMBER_FLOATING:
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if (operand.number_bit_width == 16) {
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*out << spvutils::FloatProxy<spvutils::Float16>(
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uint16_t(word & 0xFFFF));
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} else {
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// Assume 32-bit floats.
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*out << spvutils::FloatProxy<float>(word);
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}
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break;
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default:
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assert(false && "Unreachable");
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}
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} else if (operand.num_words == 2) {
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// Multi-word numbers are presented with lower order words first.
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uint64_t bits =
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uint64_t(word) | (uint64_t(inst.words[operand.offset + 1]) << 32);
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switch (operand.number_kind) {
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case SPV_NUMBER_SIGNED_INT:
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*out << int64_t(bits);
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break;
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case SPV_NUMBER_UNSIGNED_INT:
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*out << bits;
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break;
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case SPV_NUMBER_FLOATING:
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// Assume only 64-bit floats.
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*out << spvutils::FloatProxy<double>(bits);
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break;
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default:
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assert(false && "Unreachable");
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}
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} else {
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// TODO(dneto): Support more than 64-bits at a time.
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assert(false && "Unhandled");
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}
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}
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} // namespace libspirv
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