1 // Copyright (c) 2016 Google Inc.
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 // This file contains utility functions for spv_parsed_operand_t.
17 #include "parsed_operand.h"
20 #include "util/hex_float.h"
24 void EmitNumericLiteral(std::ostream* out, const spv_parsed_instruction_t& inst,
25 const spv_parsed_operand_t& operand) {
26 assert(operand.type == SPV_OPERAND_TYPE_LITERAL_INTEGER ||
27 operand.type == SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER);
28 assert(1 <= operand.num_words);
29 assert(operand.num_words <= 2);
31 const uint32_t word = inst.words[operand.offset];
32 if (operand.num_words == 1) {
33 switch (operand.number_kind) {
34 case SPV_NUMBER_SIGNED_INT:
35 *out << int32_t(word);
37 case SPV_NUMBER_UNSIGNED_INT:
40 case SPV_NUMBER_FLOATING:
41 if (operand.number_bit_width == 16) {
42 *out << spvutils::FloatProxy<spvutils::Float16>(
43 uint16_t(word & 0xFFFF));
45 // Assume 32-bit floats.
46 *out << spvutils::FloatProxy<float>(word);
50 assert(false && "Unreachable");
52 } else if (operand.num_words == 2) {
53 // Multi-word numbers are presented with lower order words first.
55 uint64_t(word) | (uint64_t(inst.words[operand.offset + 1]) << 32);
56 switch (operand.number_kind) {
57 case SPV_NUMBER_SIGNED_INT:
58 *out << int64_t(bits);
60 case SPV_NUMBER_UNSIGNED_INT:
63 case SPV_NUMBER_FLOATING:
64 // Assume only 64-bit floats.
65 *out << spvutils::FloatProxy<double>(bits);
68 assert(false && "Unreachable");
71 // TODO(dneto): Support more than 64-bits at a time.
72 assert(false && "Unhandled");
75 } // namespace libspirv