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memory_share: Pass addresses through sigmap_xmux everywhere.

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This fixes wide port recognition in some cases.
This commit is contained in:
Marcelina Kościelnicka 2021-08-12 23:06:51 +02:00
parent bfcd08a323
commit d0d9aca2c3
1 changed files with 25 additions and 20 deletions
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45
passes/memory/memory_share.cc
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@ -112,25 +112,27 @@ struct MemoryShareWorker
// merged by widening the narrow one. Check if the conditions // merged by widening the narrow one. Check if the conditions
// hold for that. // hold for that.
int wide_log2 = std::max(port1.wide_log2, port2.wide_log2); int wide_log2 = std::max(port1.wide_log2, port2.wide_log2);
if (GetSize(port1.addr) <= wide_log2) SigSpec addr1 = sigmap_xmux(port1.addr);
SigSpec addr2 = sigmap_xmux(port2.addr);
if (GetSize(addr1) <= wide_log2)
continue; continue;
if (GetSize(port2.addr) <= wide_log2) if (GetSize(addr2) <= wide_log2)
continue; continue;
if (!port1.addr.extract(0, wide_log2).is_fully_const()) if (!addr1.extract(0, wide_log2).is_fully_const())
continue; continue;
if (!port2.addr.extract(0, wide_log2).is_fully_const()) if (!addr2.extract(0, wide_log2).is_fully_const())
continue; continue;
if (sigmap_xmux(port1.addr.extract_end(wide_log2)) != sigmap_xmux(port2.addr.extract_end(wide_log2))) { if (addr1.extract_end(wide_log2) != addr2.extract_end(wide_log2)) {
// Incompatible addresses after widening. Last chance — widen both // Incompatible addresses after widening. Last chance — widen both
// ports by one more bit to merge them. // ports by one more bit to merge them.
if (!flag_widen) if (!flag_widen)
continue; continue;
wide_log2++; wide_log2++;
if (sigmap_xmux(port1.addr.extract_end(wide_log2)) != sigmap_xmux(port2.addr.extract_end(wide_log2))) if (addr1.extract_end(wide_log2) != addr2.extract_end(wide_log2))
continue; continue;
if (!port1.addr.extract(0, wide_log2).is_fully_const()) if (!addr1.extract(0, wide_log2).is_fully_const())
continue; continue;
if (!port2.addr.extract(0, wide_log2).is_fully_const()) if (!addr2.extract(0, wide_log2).is_fully_const())
continue; continue;
} }
// Combine init/reset values. // Combine init/reset values.
@ -150,12 +152,13 @@ struct MemoryShareWorker
// At this point we are committed to the merge. // At this point we are committed to the merge.
{ {
log(" Merging ports %d, %d (address %s).\n", i, j, log_signal(port1.addr)); log(" Merging ports %d, %d (address %s).\n", i, j, log_signal(port1.addr));
port1.addr = addr1;
port2.addr = addr2;
mem.prepare_rd_merge(i, j, &initvals); mem.prepare_rd_merge(i, j, &initvals);
mem.widen_prep(wide_log2); mem.widen_prep(wide_log2);
SigSpec new_data = module->addWire(NEW_ID, mem.width << wide_log2); SigSpec new_data = module->addWire(NEW_ID, mem.width << wide_log2);
module->connect(port1.data, new_data.extract(sub1 * mem.width, mem.width << port1.wide_log2)); module->connect(port1.data, new_data.extract(sub1 * mem.width, mem.width << port1.wide_log2));
module->connect(port2.data, new_data.extract(sub2 * mem.width, mem.width << port2.wide_log2)); module->connect(port2.data, new_data.extract(sub2 * mem.width, mem.width << port2.wide_log2));
port1.addr = sigmap_xmux(port1.addr);
for (int k = 0; k < wide_log2; k++) for (int k = 0; k < wide_log2; k++)
port1.addr[k] = State::S0; port1.addr[k] = State::S0;
port1.init_value = init_value; port1.init_value = init_value;
@ -211,31 +214,33 @@ struct MemoryShareWorker
// merged by widening the narrow one. Check if the conditions // merged by widening the narrow one. Check if the conditions
// hold for that. // hold for that.
int wide_log2 = std::max(port1.wide_log2, port2.wide_log2); int wide_log2 = std::max(port1.wide_log2, port2.wide_log2);
if (GetSize(port1.addr) <= wide_log2) SigSpec addr1 = sigmap_xmux(port1.addr);
SigSpec addr2 = sigmap_xmux(port2.addr);
if (GetSize(addr1) <= wide_log2)
continue; continue;
if (GetSize(port2.addr) <= wide_log2) if (GetSize(addr2) <= wide_log2)
continue; continue;
if (!port1.addr.extract(0, wide_log2).is_fully_const()) if (!addr1.extract(0, wide_log2).is_fully_const())
continue; continue;
if (!port2.addr.extract(0, wide_log2).is_fully_const()) if (!addr2.extract(0, wide_log2).is_fully_const())
continue; continue;
if (sigmap_xmux(port1.addr.extract_end(wide_log2)) != sigmap_xmux(port2.addr.extract_end(wide_log2))) { if (addr1.extract_end(wide_log2) != addr2.extract_end(wide_log2)) {
// Incompatible addresses after widening. Last chance — widen both // Incompatible addresses after widening. Last chance — widen both
// ports by one more bit to merge them. // ports by one more bit to merge them.
if (!flag_widen) if (!flag_widen)
continue; continue;
wide_log2++; wide_log2++;
if (sigmap_xmux(port1.addr.extract_end(wide_log2)) != sigmap_xmux(port2.addr.extract_end(wide_log2))) if (addr1.extract_end(wide_log2) != addr2.extract_end(wide_log2))
continue; continue;
if (!port1.addr.extract(0, wide_log2).is_fully_const()) if (!addr1.extract(0, wide_log2).is_fully_const())
continue; continue;
if (!port2.addr.extract(0, wide_log2).is_fully_const()) if (!addr2.extract(0, wide_log2).is_fully_const())
continue; continue;
} }
log(" Merging ports %d, %d (address %s).\n", i, j, log_signal(port1.addr)); log(" Merging ports %d, %d (address %s).\n", i, j, log_signal(addr1));
port1.addr = addr1;
port2.addr = addr2;
mem.prepare_wr_merge(i, j, &initvals); mem.prepare_wr_merge(i, j, &initvals);
port1.addr = sigmap_xmux(port1.addr);
port2.addr = sigmap_xmux(port2.addr);
mem.widen_wr_port(i, wide_log2); mem.widen_wr_port(i, wide_log2);
mem.widen_wr_port(j, wide_log2); mem.widen_wr_port(j, wide_log2);
int pos = 0; int pos = 0;