caiyu/nextpnr
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add CellInfo data for placement constraints

Browse Source 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2018-07-24 12:39:33 +02:00
parent c06bca0713
commit 1538d26073
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
common/nextpnr.h
View File

@ -273,6 +273,16 @@ struct CellInfo : ArchCellInfo
// cell_port -> bel_pin
std::unordered_map<IdString, IdString> pins;
// placement constraints
CellInfo *constr_parent;
stdL::vector<CellInfo*> constr_children;
const int UNCONSTR = INT_MIN;
int constr_x = UNCONSTR; // this.x - parent.x
int constr_y = UNCONSTR; // this.y - parent.y
int constr_z = UNCONSTR; // this.z - parent.z
bool constr_abs_z = false; // parent.z := 0
// parent.[xyz] := 0 when (constr_parent == nullptr)
};
struct DeterministicRNG