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shader: SSA and dominance

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ReinUsesLisp 2021-02-02 21:07:00 -03:00 • committed by ameerj
parent 2d48a7b4d0
commit 6c4cc0cd06
24 changed files with 569 additions and 76 deletions
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75
src/shader_recompiler/frontend/maxwell/program.cpp
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@ -8,40 +8,53 @@
#include "shader_recompiler/frontend/maxwell/program.h"
#include "shader_recompiler/frontend/maxwell/termination_code.h"
#include "shader_recompiler/frontend/maxwell/translate/translate.h"
#include "shader_recompiler/ir_opt/passes.h"
namespace Shader::Maxwell {
namespace {
void TranslateCode(Environment& env, const Flow::Function& cfg_function, IR::Function& function,
std::span<IR::Block*> block_map, IR::Block* block_memory) {
const size_t num_blocks{cfg_function.blocks.size()};
function.blocks.reserve(num_blocks);
Program::Function::~Function() {
std::ranges::for_each(blocks, &std::destroy_at<IR::Block>);
for (const Flow::BlockId block_id : cfg_function.blocks) {
const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
function.blocks.emplace_back(std::construct_at(block_memory, Translate(env, flow_block)));
block_map[flow_block.id] = function.blocks.back().get();
++block_memory;
}
}
Program::Program(Environment& env, const Flow::CFG& cfg) {
void EmitTerminationInsts(const Flow::Function& cfg_function,
std::span<IR::Block* const> block_map) {
for (const Flow::BlockId block_id : cfg_function.blocks) {
const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
EmitTerminationCode(flow_block, block_map);
}
}
void TranslateFunction(Environment& env, const Flow::Function& cfg_function, IR::Function& function,
IR::Block* block_memory) {
std::vector<IR::Block*> block_map;
block_map.resize(cfg_function.blocks_data.size());
TranslateCode(env, cfg_function, function, block_map, block_memory);
EmitTerminationInsts(cfg_function, block_map);
}
} // Anonymous namespace
Program::Program(Environment& env, const Flow::CFG& cfg) {
functions.reserve(cfg.Functions().size());
for (const Flow::Function& cfg_function : cfg.Functions()) {
Function& function{functions.emplace_back()};
const size_t num_blocks{cfg_function.blocks.size()};
IR::Block* block_memory{block_alloc_pool.allocate(num_blocks)};
function.blocks.reserve(num_blocks);
block_map.resize(cfg_function.blocks_data.size());
// Visit the instructions of all blocks
for (const Flow::BlockId block_id : cfg_function.blocks) {
const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
IR::Block* const block{std::construct_at(block_memory, Translate(env, flow_block))};
++block_memory;
function.blocks.push_back(block);
block_map[flow_block.id] = block;
}
// Now that all blocks are defined, emit the termination instructions
for (const Flow::BlockId block_id : cfg_function.blocks) {
const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
EmitTerminationCode(flow_block, block_map);
}
TranslateFunction(env, cfg_function, functions.emplace_back(),
block_alloc_pool.allocate(cfg_function.blocks.size()));
}
std::ranges::for_each(functions, Optimization::SsaRewritePass);
for (IR::Function& function : functions) {
Optimization::Invoke(Optimization::DeadCodeEliminationPass, function);
Optimization::Invoke(Optimization::IdentityRemovalPass, function);
// Optimization::Invoke(Optimization::VerificationPass, function);
}
}
@ -50,16 +63,16 @@ std::string DumpProgram(const Program& program) {
std::map<const IR::Inst*, size_t> inst_to_index;
std::map<const IR::Block*, size_t> block_to_index;
for (const Program::Function& function : program.functions) {
for (const IR::Block* const block : function.blocks) {
block_to_index.emplace(block, index);
for (const IR::Function& function : program.functions) {
for (const auto& block : function.blocks) {
block_to_index.emplace(block.get(), index);
++index;
}
}
std::string ret;
for (const Program::Function& function : program.functions) {
for (const IR::Function& function : program.functions) {
ret += fmt::format("Function\n");
for (const IR::Block* const block : function.blocks) {
for (const auto& block : function.blocks) {
ret += IR::DumpBlock(*block, block_to_index, inst_to_index, index) + '\n';
}
}