rename_impl.hh (3773:61c53465193d) rename_impl.hh (3788:5c804ea5cc48)
1/*
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 29 unchanged lines hidden (view full) ---

38
39template <class Impl>
40DefaultRename<Impl>::DefaultRename(Params *params)
41 : iewToRenameDelay(params->iewToRenameDelay),
42 decodeToRenameDelay(params->decodeToRenameDelay),
43 commitToRenameDelay(params->commitToRenameDelay),
44 renameWidth(params->renameWidth),
45 commitWidth(params->commitWidth),
1/*
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 29 unchanged lines hidden (view full) ---

38
39template <class Impl>
40DefaultRename<Impl>::DefaultRename(Params *params)
41 : iewToRenameDelay(params->iewToRenameDelay),
42 decodeToRenameDelay(params->decodeToRenameDelay),
43 commitToRenameDelay(params->commitToRenameDelay),
44 renameWidth(params->renameWidth),
45 commitWidth(params->commitWidth),
46 resumeSerialize(false),
46 numThreads(params->numberOfThreads),
47 maxPhysicalRegs(params->numPhysIntRegs + params->numPhysFloatRegs)
48{
49 _status = Inactive;
50
51 for (int i=0; i< numThreads; i++) {
52 renameStatus[i] = Idle;
53

--- 275 unchanged lines hidden (view full) ---

329DefaultRename<Impl>::squash(const InstSeqNum &squash_seq_num, unsigned tid)
330{
331 DPRINTF(Rename, "[tid:%u]: Squashing instructions.\n",tid);
332
333 // Clear the stall signal if rename was blocked or unblocking before.
334 // If it still needs to block, the blocking should happen the next
335 // cycle and there should be space to hold everything due to the squash.
336 if (renameStatus[tid] == Blocked ||
47 numThreads(params->numberOfThreads),
48 maxPhysicalRegs(params->numPhysIntRegs + params->numPhysFloatRegs)
49{
50 _status = Inactive;
51
52 for (int i=0; i< numThreads; i++) {
53 renameStatus[i] = Idle;
54

--- 275 unchanged lines hidden (view full) ---

330DefaultRename<Impl>::squash(const InstSeqNum &squash_seq_num, unsigned tid)
331{
332 DPRINTF(Rename, "[tid:%u]: Squashing instructions.\n",tid);
333
334 // Clear the stall signal if rename was blocked or unblocking before.
335 // If it still needs to block, the blocking should happen the next
336 // cycle and there should be space to hold everything due to the squash.
337 if (renameStatus[tid] == Blocked ||
337 renameStatus[tid] == Unblocking ||
338 renameStatus[tid] == SerializeStall) {
339
338 renameStatus[tid] == Unblocking) {
340 toDecode->renameUnblock[tid] = 1;
341
339 toDecode->renameUnblock[tid] = 1;
340
341 resumeSerialize = false;
342 serializeInst[tid] = NULL;
342 serializeInst[tid] = NULL;
343 } else if (renameStatus[tid] == SerializeStall) {
344 if (serializeInst[tid]->seqNum <= squash_seq_num) {
345 DPRINTF(Rename, "Rename will resume serializing after squash\n");
346 resumeSerialize = true;
347 assert(serializeInst[tid]);
348 } else {
349 resumeSerialize = false;
350 toDecode->renameUnblock[tid] = 1;
351
352 serializeInst[tid] = NULL;
353 }
343 }
344
345 // Set the status to Squashing.
346 renameStatus[tid] = Squashing;
347
348 // Squash any instructions from decode.
349 unsigned squashCount = 0;
350

--- 121 unchanged lines hidden (view full) ---

472 // check if stall conditions have passed
473
474 if (renameStatus[tid] == Blocked) {
475 ++renameBlockCycles;
476 } else if (renameStatus[tid] == Squashing) {
477 ++renameSquashCycles;
478 } else if (renameStatus[tid] == SerializeStall) {
479 ++renameSerializeStallCycles;
354 }
355
356 // Set the status to Squashing.
357 renameStatus[tid] = Squashing;
358
359 // Squash any instructions from decode.
360 unsigned squashCount = 0;
361

--- 121 unchanged lines hidden (view full) ---

483 // check if stall conditions have passed
484
485 if (renameStatus[tid] == Blocked) {
486 ++renameBlockCycles;
487 } else if (renameStatus[tid] == Squashing) {
488 ++renameSquashCycles;
489 } else if (renameStatus[tid] == SerializeStall) {
490 ++renameSerializeStallCycles;
491 // If we are currently in SerializeStall and resumeSerialize
492 // was set, then that means that we are resuming serializing
493 // this cycle. Tell the previous stages to block.
494 if (resumeSerialize) {
495 resumeSerialize = false;
496 block(tid);
497 toDecode->renameUnblock[tid] = false;
498 }
480 }
481
482 if (renameStatus[tid] == Running ||
483 renameStatus[tid] == Idle) {
484 DPRINTF(Rename, "[tid:%u]: Not blocked, so attempting to run "
485 "stage.\n", tid);
486
487 renameInsts(tid);

--- 752 unchanged lines hidden (view full) ---

1240 unblock(tid);
1241
1242 return true;
1243 }
1244
1245 if (renameStatus[tid] == Squashing) {
1246 // Switch status to running if rename isn't being told to block or
1247 // squash this cycle.
499 }
500
501 if (renameStatus[tid] == Running ||
502 renameStatus[tid] == Idle) {
503 DPRINTF(Rename, "[tid:%u]: Not blocked, so attempting to run "
504 "stage.\n", tid);
505
506 renameInsts(tid);

--- 752 unchanged lines hidden (view full) ---

1259 unblock(tid);
1260
1261 return true;
1262 }
1263
1264 if (renameStatus[tid] == Squashing) {
1265 // Switch status to running if rename isn't being told to block or
1266 // squash this cycle.
1248 DPRINTF(Rename, "[tid:%u]: Done squashing, switching to running.\n",
1249 tid);
1267 if (!resumeSerialize) {
1268 DPRINTF(Rename, "[tid:%u]: Done squashing, switching to running.\n",
1269 tid);
1250
1270
1251 renameStatus[tid] = Running;
1271 renameStatus[tid] = Running;
1272 return false;
1273 } else {
1274 DPRINTF(Rename, "[tid:%u]: Done squashing, switching to serialize.\n",
1275 tid);
1252
1276
1253 return false;
1277 renameStatus[tid] = SerializeStall;
1278 return true;
1279 }
1254 }
1255
1256 if (renameStatus[tid] == SerializeStall) {
1257 // Stall ends once the ROB is free.
1258 DPRINTF(Rename, "[tid:%u]: Done with serialize stall, switching to "
1259 "unblocking.\n", tid);
1260
1261 DynInstPtr serial_inst = serializeInst[tid];

--- 85 unchanged lines hidden --- 		1280 }
1281
1282 if (renameStatus[tid] == SerializeStall) {
1283 // Stall ends once the ROB is free.
1284 DPRINTF(Rename, "[tid:%u]: Done with serialize stall, switching to "
1285 "unblocking.\n", tid);
1286
1287 DynInstPtr serial_inst = serializeInst[tid];

--- 85 unchanged lines hidden ---