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place_common: Debugging bad relative constraint legalisation

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-08-03 16:16:20 +02:00
parent 8c518cb838
commit 8081249b92
1 changed files with 31 additions and 1 deletions
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32
common/place_common.cc
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@ -194,7 +194,7 @@ class ConstraintLegaliseWorker
++diameter;
} else {
sign = -1;
if ((start + sign * diameter) > max) {
if ((start + sign * diameter) < min) {
sign = 1;
++diameter;
}
@ -257,6 +257,7 @@ class ConstraintLegaliseWorker
cloc.x = xSearch.get();
cloc.y = ySearch.get();
cloc.z = zSearch.get();
log_info(" checking '%s' at (%d, %d, %d)\n", child->name.c_str(ctx), cloc.x, cloc.y, cloc.z);
zSearch.next();
if (zSearch.done()) {
@ -304,6 +305,8 @@ class ConstraintLegaliseWorker
Loc currentLoc;
if (cell->bel != BelId())
currentLoc = ctx->getBelLocation(cell->bel);
else
currentLoc = oldLocations[cell->name];
if (cell->constr_x == cell->UNCONSTR)
xRootSearch = IncreasingDiameterSearch(currentLoc.x, 0, ctx->getGridDimX() - 1);
else
@ -320,9 +323,12 @@ class ConstraintLegaliseWorker
zRootSearch = IncreasingDiameterSearch(cell->constr_z);
while (!xRootSearch.done()) {
Loc rootLoc;
rootLoc.x = xRootSearch.get();
rootLoc.y = yRootSearch.get();
rootLoc.z = zRootSearch.get();
if (ctx->verbose)
log_info(" trying (%d, %d, %d)\n", rootLoc.x, rootLoc.y, rootLoc.z);
zRootSearch.next();
if (zRootSearch.done()) {
zRootSearch.reset();
@ -374,6 +380,28 @@ class ConstraintLegaliseWorker
public:
ConstraintLegaliseWorker(Context *ctx) : ctx(ctx) {};
void print_chain(CellInfo *cell, int depth = 0) {
for (int i = 0; i < depth; i++)
log(" ");
log("'%s' (", cell->name.c_str(ctx));
if (cell->constr_x != cell->UNCONSTR)
log("%d, ", cell->constr_x);
else
log("*, ");
if (cell->constr_y != cell->UNCONSTR)
log("%d, ", cell->constr_y);
else
log("*, ");
if (cell->constr_z != cell->UNCONSTR)
log("%d", cell->constr_z);
else
log("*");
log(")\n");
for (auto child : cell->constr_children)
print_chain(child, depth+1);
}
bool legalise_constraints() {
log_info("Legalising relative constraints...\n");
for (auto cell : sorted(ctx->cells)) {
@ -382,6 +410,8 @@ public:
for (auto cell : sorted(ctx->cells)) {
bool res = legalise_cell(cell.second);
if (!res) {
if(ctx->verbose)
print_chain(cell.second);
log_error("failed to place chain starting at cell '%s'\n", cell.first.c_str(ctx));
return false;
}