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https://gitee.com/openharmony/third_party_spirv-tools
synced 2024-11-27 09:32:08 +00:00
7fa9e746ef
spirv-diff is a new tool that produces diff-style output comparing two SPIR-V modules. The instructions between the src and dst modules are matched as best as the tool can, and output is produced (in src id-space) that shows which instructions are removed in src, added in dst or modified between them. The order of instructions are not retained. Matching instructions between two SPIR-V modules is not trivial, and thus a number of heuristics are applied in this tool. In particular, without debug information, it's hard to match functions as they can be reordered. As such, this tool is primarily useful to produce the diff of two SPIR-V modules derived from the same source. This tool can be useful in a number of scenarios: - Compare the SPIR-V before and after modifying a shader - Compare the SPIR-V produced from a shader before and after compiler codegen changes. - Compare the SPIR-V produced from a shader before and after some transformation or optimization. - Compare the SPIR-V produced from a shader with different compilers.
77 lines
2.5 KiB
C++
77 lines
2.5 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 "source/parsed_operand.h"
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#include <cassert>
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#include "source/util/hex_float.h"
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namespace spvtools {
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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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if (operand.type != SPV_OPERAND_TYPE_LITERAL_INTEGER &&
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operand.type != SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER &&
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operand.type != SPV_OPERAND_TYPE_OPTIONAL_LITERAL_INTEGER &&
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operand.type != SPV_OPERAND_TYPE_OPTIONAL_TYPED_LITERAL_INTEGER)
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return;
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if (operand.num_words < 1) return;
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// TODO(dneto): Support more than 64-bits at a time.
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if (operand.num_words > 2) return;
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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 << spvtools::utils::FloatProxy<spvtools::utils::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 << spvtools::utils::FloatProxy<float>(word);
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}
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break;
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default:
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break;
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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 << spvtools::utils::FloatProxy<double>(bits);
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break;
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default:
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break;
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}
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}
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}
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} // namespace spvtools
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