128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
#pragma once
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#include "pipeline.h"
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#include <queue>
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namespace vortex {
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class Scoreboard {
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private:
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struct reg_use_t {
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RegType type;
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uint32_t reg;
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uint64_t owner;
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};
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std::vector<RegMask> in_use_iregs_;
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std::vector<RegMask> in_use_fregs_;
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std::vector<RegMask> in_use_vregs_;
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std::unordered_map<uint32_t, uint64_t> owners_;
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public:
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Scoreboard(const ArchDef &arch)
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: in_use_iregs_(arch.num_warps())
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, in_use_fregs_(arch.num_warps())
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, in_use_vregs_(arch.num_warps())
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{
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this->clear();
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}
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void clear() {
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for (uint32_t i = 0, n = in_use_iregs_.size(); i < n; ++i) {
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in_use_iregs_.at(i).reset();
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in_use_fregs_.at(i).reset();
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in_use_vregs_.at(i).reset();
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}
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owners_.clear();
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}
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bool in_use(pipeline_trace_t* state) const {
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return (state->used_iregs & in_use_iregs_.at(state->wid)) != 0
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|| (state->used_fregs & in_use_fregs_.at(state->wid)) != 0
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|| (state->used_vregs & in_use_vregs_.at(state->wid)) != 0;
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}
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std::vector<reg_use_t> get_uses(pipeline_trace_t* state) const {
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std::vector<reg_use_t> out;
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{
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uint32_t r = 0;
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auto used_iregs = state->used_iregs & in_use_iregs_.at(state->wid);
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while (used_iregs.any()) {
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if (used_iregs.test(0)) {
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uint32_t tag = (r << 16) | (state->wid << 4) | (int)RegType::Integer;
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out.push_back({RegType::Integer, r, owners_.at(tag)});
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}
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used_iregs >>= 1;
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++r;
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}
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}
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{
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uint32_t r = 0;
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auto used_fregs = state->used_fregs & in_use_fregs_.at(state->wid);
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while (used_fregs.any()) {
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if (used_fregs.test(0)) {
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uint32_t tag = (r << 16) | (state->wid << 4) | (int)RegType::Float;
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out.push_back({RegType::Float, r, owners_.at(tag)});
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}
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used_fregs >>= 1;
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++r;
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}
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}
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{
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uint32_t r = 0;
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auto used_vregs = state->used_vregs & in_use_vregs_.at(state->wid);
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while (used_vregs.any()) {
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if (used_vregs.test(0)) {
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uint32_t tag = (r << 16) | (state->wid << 4) | (int)RegType::Vector;
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out.push_back({RegType::Vector, r, owners_.at(tag)});
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}
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used_vregs >>= 1;
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++r;
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}
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}
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return out;
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}
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void reserve(pipeline_trace_t* state) {
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if (!state->wb)
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return;
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switch (state->rdest_type) {
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case RegType::Integer:
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in_use_iregs_.at(state->wid).set(state->rdest);
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break;
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case RegType::Float:
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in_use_fregs_.at(state->wid).set(state->rdest);
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break;
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case RegType::Vector:
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in_use_vregs_.at(state->wid).set(state->rdest);
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break;
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default:
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break;
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}
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uint32_t tag = (state->rdest << 16) | (state->wid << 4) | (int)state->rdest_type;
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assert(owners_.count(tag) == 0);
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owners_[tag] = state->uuid;
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}
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void release(pipeline_trace_t* state) {
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if (!state->wb)
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return;
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switch (state->rdest_type) {
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case RegType::Integer:
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in_use_iregs_.at(state->wid).reset(state->rdest);
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break;
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case RegType::Float:
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in_use_fregs_.at(state->wid).reset(state->rdest);
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break;
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case RegType::Vector:
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in_use_vregs_.at(state->wid).reset(state->rdest);
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break;
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default:
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break;
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}
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uint32_t tag = (state->rdest << 16) | (state->wid << 4) | (int)state->rdest_type;
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owners_.erase(tag);
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}
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};
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} |