SPIRV-Tools/source/opcode.cpp
David Neto c296701964 Add target envs for OpenCL, OpenGL
Covers: OpenCL 2.1, OpenCL 2.2
Covers: OpenGL 4.0, OpenGL 4.1, OpenGL 4.2, OpenGL 4.3, OpenGL 4.5.
The OpenGL environments assume the use of GL_ARB_gl_spirv, of course.
2016-08-05 18:19:30 -04:00

281 lines
8.5 KiB
C++

// Copyright (c) 2015-2016 The Khronos Group Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and/or associated documentation files (the
// "Materials"), to deal in the Materials without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Materials, and to
// permit persons to whom the Materials are furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Materials.
//
// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
// https://www.khronos.org/registry/
//
// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
#include "opcode.h"
#include <assert.h>
#include <string.h>
#include <cstdlib>
#include "instruction.h"
#include "macro.h"
#include "spirv-tools/libspirv.h"
#include "spirv_constant.h"
#include "spirv_endian.h"
namespace {
// Descriptions of each opcode. Each entry describes the format of the
// instruction that follows a particular opcode.
const spv_opcode_desc_t opcodeTableEntries_1_0[] = {
#include "core.insts-1.0.inc"
};
const spv_opcode_desc_t opcodeTableEntries_1_1[] = {
#include "core.insts-1.1.inc"
};
} // anonymous namespace
const char* spvGeneratorStr(uint32_t generator) {
switch (generator) {
case SPV_GENERATOR_KHRONOS:
return "Khronos";
case SPV_GENERATOR_LUNARG:
return "LunarG";
case SPV_GENERATOR_VALVE:
return "Valve";
case SPV_GENERATOR_CODEPLAY:
return "Codeplay Software Ltd.";
case SPV_GENERATOR_NVIDIA:
return "NVIDIA";
case SPV_GENERATOR_ARM:
return "ARM";
case SPV_GENERATOR_KHRONOS_LLVM_TRANSLATOR:
return "Khronos LLVM/SPIR-V Translator";
case SPV_GENERATOR_KHRONOS_ASSEMBLER:
return "Khronos SPIR-V Tools Assembler";
case SPV_GENERATOR_KHRONOS_GLSLANG:
return "Khronos Glslang Reference Front End";
default:
return "Unknown";
}
}
uint32_t spvOpcodeMake(uint16_t wordCount, SpvOp opcode) {
return ((uint32_t)opcode) | (((uint32_t)wordCount) << 16);
}
void spvOpcodeSplit(const uint32_t word, uint16_t* pWordCount,
uint16_t* pOpcode) {
if (pWordCount) {
*pWordCount = (uint16_t)((0xffff0000 & word) >> 16);
}
if (pOpcode) {
*pOpcode = 0x0000ffff & word;
}
}
spv_result_t spvOpcodeTableGet(spv_opcode_table* pInstTable,
spv_target_env env) {
if (!pInstTable) return SPV_ERROR_INVALID_POINTER;
static const spv_opcode_table_t table_1_0 = {
ARRAY_SIZE(opcodeTableEntries_1_0), opcodeTableEntries_1_0};
static const spv_opcode_table_t table_1_1 = {
ARRAY_SIZE(opcodeTableEntries_1_1), opcodeTableEntries_1_1};
switch (env) {
case SPV_ENV_UNIVERSAL_1_0:
case SPV_ENV_VULKAN_1_0:
case SPV_ENV_OPENCL_2_1:
case SPV_ENV_OPENGL_4_0:
case SPV_ENV_OPENGL_4_1:
case SPV_ENV_OPENGL_4_2:
case SPV_ENV_OPENGL_4_3:
case SPV_ENV_OPENGL_4_5:
*pInstTable = &table_1_0;
return SPV_SUCCESS;
case SPV_ENV_UNIVERSAL_1_1:
case SPV_ENV_OPENCL_2_2:
*pInstTable = &table_1_1;
return SPV_SUCCESS;
}
assert(0 && "Unknown spv_target_env in spvOpcodeTableGet()");
return SPV_ERROR_INVALID_TABLE;
}
spv_result_t spvOpcodeTableNameLookup(const spv_opcode_table table,
const char* name,
spv_opcode_desc* pEntry) {
if (!name || !pEntry) return SPV_ERROR_INVALID_POINTER;
if (!table) return SPV_ERROR_INVALID_TABLE;
// TODO: This lookup of the Opcode table is suboptimal! Binary sort would be
// preferable but the table requires sorting on the Opcode name, but it's
// static
// const initialized and matches the order of the spec.
const size_t nameLength = strlen(name);
for (uint64_t opcodeIndex = 0; opcodeIndex < table->count; ++opcodeIndex) {
if (nameLength == strlen(table->entries[opcodeIndex].name) &&
!strncmp(name, table->entries[opcodeIndex].name, nameLength)) {
// NOTE: Found out Opcode!
*pEntry = &table->entries[opcodeIndex];
return SPV_SUCCESS;
}
}
return SPV_ERROR_INVALID_LOOKUP;
}
spv_result_t spvOpcodeTableValueLookup(const spv_opcode_table table,
const SpvOp opcode,
spv_opcode_desc* pEntry) {
if (!table) return SPV_ERROR_INVALID_TABLE;
if (!pEntry) return SPV_ERROR_INVALID_POINTER;
// TODO: As above this lookup is not optimal.
for (uint64_t opcodeIndex = 0; opcodeIndex < table->count; ++opcodeIndex) {
if (opcode == table->entries[opcodeIndex].opcode) {
// NOTE: Found the Opcode!
*pEntry = &table->entries[opcodeIndex];
return SPV_SUCCESS;
}
}
return SPV_ERROR_INVALID_LOOKUP;
}
int32_t spvOpcodeRequiresCapabilities(spv_opcode_desc entry) {
return entry->capabilities != 0;
}
void spvInstructionCopy(const uint32_t* words, const SpvOp opcode,
const uint16_t wordCount, const spv_endianness_t endian,
spv_instruction_t* pInst) {
pInst->opcode = opcode;
pInst->words.resize(wordCount);
for (uint16_t wordIndex = 0; wordIndex < wordCount; ++wordIndex) {
pInst->words[wordIndex] = spvFixWord(words[wordIndex], endian);
if (!wordIndex) {
uint16_t thisWordCount;
uint16_t thisOpcode;
spvOpcodeSplit(pInst->words[wordIndex], &thisWordCount, &thisOpcode);
assert(opcode == static_cast<SpvOp>(thisOpcode) &&
wordCount == thisWordCount && "Endianness failed!");
}
}
}
const char* spvOpcodeString(const SpvOp opcode) {
// Use the latest SPIR-V version, which should be backward-compatible with all
// previous ones.
for (uint32_t i = 0; i < ARRAY_SIZE(opcodeTableEntries_1_1); ++i) {
if (opcodeTableEntries_1_1[i].opcode == opcode)
return opcodeTableEntries_1_1[i].name;
}
assert(0 && "Unreachable!");
return "unknown";
}
int32_t spvOpcodeIsScalarType(const SpvOp opcode) {
switch (opcode) {
case SpvOpTypeInt:
case SpvOpTypeFloat:
case SpvOpTypeBool:
return true;
default:
return false;
}
}
int32_t spvOpcodeIsConstant(const SpvOp opcode) {
switch (opcode) {
case SpvOpConstantTrue:
case SpvOpConstantFalse:
case SpvOpConstant:
case SpvOpConstantComposite:
case SpvOpConstantSampler:
case SpvOpConstantNull:
case SpvOpSpecConstantTrue:
case SpvOpSpecConstantFalse:
case SpvOpSpecConstant:
case SpvOpSpecConstantComposite:
case SpvOpSpecConstantOp:
return true;
default:
return false;
}
}
int32_t spvOpcodeIsComposite(const SpvOp opcode) {
switch (opcode) {
case SpvOpTypeVector:
case SpvOpTypeMatrix:
case SpvOpTypeArray:
case SpvOpTypeStruct:
return true;
default:
return false;
}
}
int32_t spvOpcodeReturnsLogicalPointer(const SpvOp opcode) {
switch (opcode) {
case SpvOpVariable:
case SpvOpAccessChain:
case SpvOpInBoundsAccessChain:
case SpvOpFunctionParameter:
case SpvOpImageTexelPointer:
case SpvOpCopyObject:
return true;
default:
return false;
}
}
int32_t spvOpcodeGeneratesType(SpvOp op) {
switch (op) {
case SpvOpTypeVoid:
case SpvOpTypeBool:
case SpvOpTypeInt:
case SpvOpTypeFloat:
case SpvOpTypeVector:
case SpvOpTypeMatrix:
case SpvOpTypeImage:
case SpvOpTypeSampler:
case SpvOpTypeSampledImage:
case SpvOpTypeArray:
case SpvOpTypeRuntimeArray:
case SpvOpTypeStruct:
case SpvOpTypeOpaque:
case SpvOpTypePointer:
case SpvOpTypeFunction:
case SpvOpTypeEvent:
case SpvOpTypeDeviceEvent:
case SpvOpTypeReserveId:
case SpvOpTypeQueue:
case SpvOpTypePipe:
return true;
default:
// In particular, OpTypeForwardPointer does not generate a type,
// but declares a storage class for a pointer type generated
// by a different instruction.
break;
}
return 0;
}