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kernel/mem: defer port removal to emit()

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This commit is contained in:
Marcelina Kościelnicka 2021-05-22 16:10:18 +02:00
parent 8c734e07b8
commit ff9e0394b8
2 changed files with 38 additions and 18 deletions
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48
kernel/mem.cc
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@ -52,6 +52,40 @@ void Mem::remove() {
}
void Mem::emit() {
std::vector<int> rd_left;
for (int i = 0; i < GetSize(rd_ports); i++) {
auto &port = rd_ports[i];
if (port.removed) {
if (port.cell) {
module->remove(port.cell);
}
} else {
rd_left.push_back(i);
}
}
std::vector<int> wr_left;
for (int i = 0; i < GetSize(wr_ports); i++) {
auto &port = wr_ports[i];
if (port.removed) {
if (port.cell) {
module->remove(port.cell);
}
} else {
wr_left.push_back(i);
}
}
for (int i = 0; i < GetSize(rd_left); i++)
if (i != rd_left[i])
std::swap(rd_ports[i], rd_ports[rd_left[i]]);
rd_ports.resize(GetSize(rd_left));
for (int i = 0; i < GetSize(wr_left); i++)
if (i != wr_left[i])
std::swap(wr_ports[i], wr_ports[wr_left[i]]);
wr_ports.resize(GetSize(wr_left));
// for future: handle transparency mask here
// for future: handle priority mask here
if (packed) {
if (mem) {
module->memories.erase(mem->name);
@ -205,20 +239,6 @@ void Mem::emit() {
}
}
void Mem::remove_wr_port(int idx) {
if (wr_ports[idx].cell) {
module->remove(wr_ports[idx].cell);
}
wr_ports.erase(wr_ports.begin() + idx);
}
void Mem::remove_rd_port(int idx) {
if (rd_ports[idx].cell) {
module->remove(rd_ports[idx].cell);
}
rd_ports.erase(rd_ports.begin() + idx);
}
void Mem::clear_inits() {
for (auto &init : inits)
if (init.cell)

8
kernel/mem.h
View file

@ -25,20 +25,22 @@
YOSYS_NAMESPACE_BEGIN
struct MemRd {
bool removed;
dict<IdString, Const> attributes;
Cell *cell;
bool clk_enable, clk_polarity;
bool transparent;
SigSpec clk, en, addr, data;
MemRd() : cell(nullptr) {}
MemRd() : removed(false), cell(nullptr) {}
};
struct MemWr {
bool removed;
dict<IdString, Const> attributes;
Cell *cell;
bool clk_enable, clk_polarity;
SigSpec clk, en, addr, data;
MemWr() : cell(nullptr) {}
MemWr() : removed(false), cell(nullptr) {}
};
struct MemInit {
@ -63,8 +65,6 @@ struct Mem {
void remove();
void emit();
void remove_wr_port(int idx);
void remove_rd_port(int idx);
void clear_inits();
Const get_init_data() const;
static std::vector<Mem> get_all_memories(Module *module);