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drt: slight routeNet_postAstarPatchMinAreaVio refactor #6389

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merged 2 commits into from
Dec 22, 2024
Merged

drt: slight routeNet_postAstarPatchMinAreaVio refactor #6389

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84706cf
drt: slight routeNet_postAstarPatchMinAreaVio refactor
bnmfw Dec 19, 2024
cd640db
drt: clarify variable names
bnmfw Dec 21, 2024
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10 changes: 10 additions & 0 deletions src/drt/src/dr/FlexDR.h
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Original file line number Diff line number Diff line change
Expand Up @@ -1045,6 +1045,16 @@ class FlexDRWorker
drNet* net,
const std::vector<FlexMazeIdx>& path,
const std::map<FlexMazeIdx, frCoord>& areaMap);
void routeNet_postAstarPatchMinAreaVio_helper(
drNet* net,
drt::frLayer* curr_layer,
frArea reqArea,
frArea currArea,
frCoord startViaHalfEncArea,
frCoord endViaHalfEncArea,
std::vector<FlexMazeIdx>& points,
int point_idx,
int prev_point_idx);
void routeNet_postAstarAddPatchMetal(drNet* net,
const FlexMazeIdx& bpIdx,
const FlexMazeIdx& epIdx,
Expand Down
244 changes: 82 additions & 162 deletions src/drt/src/dr/FlexDR_maze.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3385,87 +3385,15 @@ void FlexDRWorker::routeNet_postAstarPatchMinAreaVio(

// push to minArea violation
if (currArea < reqArea) {
FlexMazeIdx bp, ep;
frArea gapArea = reqArea
- (currArea - startViaHalfEncArea - endViaHalfEncArea)
- std::min(startViaHalfEncArea, endViaHalfEncArea);
// new
bool bpPatchStyle = true; // style 1: left only; 0: right only
bool epPatchStyle = false;
// stack via
if (i - 1 == prev_i) {
bp = points[i - 1];
ep = points[i - 1];
bpPatchStyle = true;
epPatchStyle = false;
// planar
} else {
bp = points[prev_i];
ep = points[i - 1];
if (getTech()->getLayer(layerNum)->getDir()
== dbTechLayerDir::HORIZONTAL) {
if (points[prev_i].x() < points[prev_i + 1].x()) {
bpPatchStyle = true;
} else if (points[prev_i].x() > points[prev_i + 1].x()) {
bpPatchStyle = false;
} else {
if (points[prev_i].x() < points[i - 1].x()) {
bpPatchStyle = true;
} else if (points[prev_i].x() > points[i - 1].x()) {
bpPatchStyle = false;
} else {
// if fully vertical, bpPatch left and epPatch right
bpPatchStyle = false;
}
}
if (points[i - 1].x() < points[i - 2].x()) {
epPatchStyle = true;
} else if (points[i - 1].x() > points[i - 2].x()) {
epPatchStyle = false;
} else {
if (points[i - 1].x() < points[prev_i].x()) {
epPatchStyle = true;
} else if (points[i - 1].x() > points[prev_i].x()) {
epPatchStyle = false;
} else {
// if fully vertical, bpPatch left and epPatch right
epPatchStyle = true;
}
}
} else {
if (points[prev_i].y() < points[prev_i + 1].y()) {
bpPatchStyle = true;
} else if (points[prev_i].y() > points[prev_i + 1].y()) {
bpPatchStyle = false;
} else {
if (points[prev_i].y() < points[i - 1].y()) {
bpPatchStyle = true;
} else if (points[prev_i].y() > points[i - 1].y()) {
bpPatchStyle = false;
} else {
// if fully horizontal, bpPatch left and epPatch right
bpPatchStyle = false;
}
}
if (points[i - 1].y() < points[i - 2].y()) {
epPatchStyle = true;
} else if (points[i - 1].y() > points[i - 2].y()) {
epPatchStyle = false;
} else {
if (points[i - 1].y() < points[prev_i].y()) {
epPatchStyle = true;
} else if (points[i - 1].y() > points[prev_i].y()) {
epPatchStyle = false;
} else {
// if fully horizontal, bpPatch left and epPatch right
epPatchStyle = true;
}
}
}
}
auto patchWidth = getTech()->getLayer(layerNum)->getWidth();
routeNet_postAstarAddPatchMetal(
net, bp, ep, gapArea, patchWidth, bpPatchStyle, epPatchStyle);
routeNet_postAstarPatchMinAreaVio_helper(net,
getTech()->getLayer(layerNum),
reqArea,
currArea,
startViaHalfEncArea,
endViaHalfEncArea,
points,
i,
prev_i);
}
// init for next path
if (nextIdx.z() < currIdx.z()) {
Expand Down Expand Up @@ -3496,10 +3424,10 @@ void FlexDRWorker::routeNet_postAstarPatchMinAreaVio(
frArea reqArea
= (minAreaConstraint) ? minAreaConstraint->getMinArea() : 0;
auto pathWidth = getTech()->getLayer(layerNum)->getWidth();
Point bp, ep;
gridGraph_.getPoint(bp, currIdx.x(), currIdx.y());
gridGraph_.getPoint(ep, nextIdx.x(), nextIdx.y());
frCoord pathLength = Point::manhattanDistance(bp, ep);
Point begin_point, end_point;
gridGraph_.getPoint(begin_point, currIdx.x(), currIdx.y());
gridGraph_.getPoint(end_point, nextIdx.x(), nextIdx.y());
frCoord pathLength = Point::manhattanDistance(begin_point, end_point);
if (currArea < reqArea) {
if (!prev_is_wire) {
currArea /= 2;
Expand All @@ -3523,87 +3451,79 @@ void FlexDRWorker::routeNet_postAstarPatchMinAreaVio(
}
endViaHalfEncArea = 0;
if (currArea < reqArea) {
FlexMazeIdx bp, ep;
frArea gapArea = reqArea
- (currArea - startViaHalfEncArea - endViaHalfEncArea)
- std::min(startViaHalfEncArea, endViaHalfEncArea);
// new
bool bpPatchStyle = true; // style 1: left only; 0: right only
bool epPatchStyle = false;
// stack via
if (i - 1 == prev_i) {
bp = points[i - 1];
ep = points[i - 1];
bpPatchStyle = true;
epPatchStyle = false;
// planar
} else {
bp = points[prev_i];
ep = points[i - 1];
if (getTech()->getLayer(layerNum)->getDir()
== dbTechLayerDir::HORIZONTAL) {
if (points[prev_i].x() < points[prev_i + 1].x()) {
bpPatchStyle = true;
} else if (points[prev_i].x() > points[prev_i + 1].x()) {
bpPatchStyle = false;
} else {
if (points[prev_i].x() < points[i - 1].x()) {
bpPatchStyle = true;
} else if (points[prev_i].x() > points[i - 1].x()) {
bpPatchStyle = false;
} else {
bpPatchStyle = false;
}
}
if (points[i - 1].x() < points[i - 2].x()) {
epPatchStyle = true;
} else if (points[i - 1].x() > points[i - 2].x()) {
epPatchStyle = false;
} else {
if (points[i - 1].x() < points[prev_i].x()) {
epPatchStyle = true;
} else if (points[i - 1].x() > points[prev_i].x()) {
epPatchStyle = false;
} else {
epPatchStyle = true;
}
}
} else {
if (points[prev_i].y() < points[prev_i + 1].y()) {
bpPatchStyle = true;
} else if (points[prev_i].y() > points[prev_i + 1].y()) {
bpPatchStyle = false;
} else {
if (points[prev_i].y() < points[i - 1].y()) {
bpPatchStyle = true;
} else if (points[prev_i].y() > points[i - 1].y()) {
bpPatchStyle = false;
} else {
bpPatchStyle = false;
}
}
if (points[i - 1].y() < points[i - 2].y()) {
epPatchStyle = true;
} else if (points[i - 1].y() > points[i - 2].y()) {
epPatchStyle = false;
} else {
if (points[i - 1].y() < points[prev_i].y()) {
epPatchStyle = true;
} else if (points[i - 1].y() > points[prev_i].y()) {
epPatchStyle = false;
} else {
epPatchStyle = true;
}
}
}
}
auto patchWidth = getTech()->getLayer(layerNum)->getWidth();
routeNet_postAstarAddPatchMetal(
net, bp, ep, gapArea, patchWidth, bpPatchStyle, epPatchStyle);
routeNet_postAstarPatchMinAreaVio_helper(net,
getTech()->getLayer(layerNum),
reqArea,
currArea,
startViaHalfEncArea,
endViaHalfEncArea,
points,
i,
prev_i);
}
}
}

void FlexDRWorker::routeNet_postAstarPatchMinAreaVio_helper(
drNet* net,
drt::frLayer* curr_layer,
frArea reqArea,
frArea currArea,
frCoord startViaHalfEncArea,
frCoord endViaHalfEncArea,
std::vector<FlexMazeIdx>& points,
int point_idx,
int prev_point_idx)
{
FlexMazeIdx begin_point, end_point;
frArea gapArea = reqArea
- (currArea - startViaHalfEncArea - endViaHalfEncArea)
- std::min(startViaHalfEncArea, endViaHalfEncArea);
// bp = begin point, ep = endpoint
bool is_bp_patch_style_left = true; // style 1: left only; 0: right only
bool is_ep_patch_style_right = false;
// stack via
if (point_idx - 1 == prev_point_idx) {
begin_point = points[point_idx - 1];
end_point = points[point_idx - 1];
is_bp_patch_style_left = true;
is_ep_patch_style_right = false;
// planar
} else {
begin_point = points[prev_point_idx];
end_point = points[point_idx - 1];
FlexMazeIdx begin_point_successor = points[prev_point_idx + 1],
end_point_predecessor = points[point_idx - 2];
if (curr_layer->getDir() == dbTechLayerDir::HORIZONTAL) {
is_bp_patch_style_left
= (begin_point.x() == begin_point_successor.x())
? (begin_point.x() < end_point.x())
: (begin_point.x() < begin_point_successor.x());
is_ep_patch_style_right
= (end_point.x() == end_point_predecessor.x())
? (end_point.x() <= begin_point.x())
: (end_point.x() < end_point_predecessor.x());
} else {
is_bp_patch_style_left
= (begin_point.y() == begin_point_successor.y())
? (begin_point.y() < end_point.y())
: (begin_point.y() < begin_point_successor.y());
is_ep_patch_style_right
= (end_point.y() == end_point_predecessor.y())
? (end_point.y() <= begin_point.y())
: (end_point.y() < end_point_predecessor.y());
}
}
auto patchWidth = curr_layer->getWidth();
routeNet_postAstarAddPatchMetal(net,
begin_point,
end_point,
gapArea,
patchWidth,
is_bp_patch_style_left,
is_ep_patch_style_right);
}

frCoord FlexDRWorker::getHalfViaEncArea(frMIdx z,
bool isLayer1,
frNonDefaultRule* ndr)
Expand Down
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