Details:
* New: in <bootstrap>: add support for devtoolset-2 in ccb. Run the
cmake commands through 'scl', set shell environment variables
BOOST_INCLUDEDIR & BOOST_LIBRARYDIR and disable the default
system path search.
* Change: In various flex scanners add the %nounput to suppress
compiler warnings.
* Change: Little cleanup for g++ 4.8.1 as it's more strict.
* Change: In various top CMakeLists.txt, suppress extraneous '/'
after DESTDIR.
- New: Added FreeBSD/Ubuntu patches from Otacilio De Araujo
(<otaciliodearaujo@gmail.com>).
* ./katabatic:
- New: Makes use of cbug to display the (scary) debug messages.
- New: In LayerAssignement & GCell, perform layer assignment on whole net
trunk, instead on a segment by segment basis.
- New: In GCell, fragmentation analysis. When a layer change is requested,
it allows to check if the additionnal perpandiculars created to
maintain connexity will not over fragment the layer. This is particu-
larly critical for M3->M5 which create M4 in perpandiculars, and M4
may be subject to very dense configuration.
- New: In AutoSegment & LoadGrByNet, adds a flags telling if the net's
degree equal 2. Has not proven to be useful yet.
- New: In AutoSegment, adds a flag telling if the segment is the perpan-
dicular part of a dogleg. Has not proven useful yet.
- New: In AutoSegment, adds a "_parent" attribute to keep track of the fragmentation
processus. Currently used only for strap segments, points to the original
segment in the appropriate direction (before the split).
- New: In GCell & LayerAssign, new method of layer assignment. Move up
the whole net trunk if only one of it's segment is inside an over-saturated
GCell. AutoSegment are moved up only if there is at least 2 free tracks
remaining on the upper level.
- Change: In Session::_canonize(), uses the lowest segment Id as canonical.
More reliable than geometricals criterions in the end. Assuming that the
segments are being created in deterministic order, which *should* be the
case consediring the way we are walking through the global routing.
- Change: In AutoSegment, completly suppress the CompareCanonical(), replace
it by the much simpler CompareId().
- Change: In GCell::rpDesaturate(), stops desaturation when bottom density
is under 0.5, otherwise we are causing a severe imbalance in M2/M4
densities. All wires pushed up to M4...
- Change: In ChipTools, for the Pad's RoutingPad, reslect the best component
using the one in the lowest layer. To avoid problem when splitting
AutoContact as we expect the base Contact to be on the lower layer.
- Bug: In GCellConfiguration::_GCell_xG_xL1_xL3(), add H/V alignement constraints
in fork case. This allow NE/SW contact to be splitted correctly later.
- Bug: In AutoContact::split(), the connexity on the splitted contacts was
not correctly restored, leading to canonization and parentage looping
errors. This was concealed by the Kite Track::_check() bug (incomplete
individual TrackSegment checking).
- Change: In GCell & GCellGrid, unificated way of computing all the GCell's
densities.
- Change: In GCell::stepDesaturate(), uses shearUp() instead of moveUp().
- Change: In AutoSegment, new method ::shearUp() to avoid moveUp() saturating
GCells as side-effect.
- New: ChipTools, regroup all datas and utilities to manage a full-chip
design.
- Change: In LoadGrByNet/GCellConfiguration::_GCell_xG_1Pad(), uses straight
perpandicular wires on top & right pads. The GCells under those connectors
are fully saturated, wires must go out as straight as possible.
- Change: In AutoHorizontal/AutoVertical, update the "terminal" flag after
slackening. This is to avoid global that are no longer connected to
terminals behave as such.
- Change: In AutoSegment::canMoveUp() & canPivotUp(), prevent all local segments
to go up. This is to avoid cluttering upper levels with small segments.
- Change: In GCellConfiguration, for xG_xL3, detect straight vertical topologies
and for them to be fixed (new flag FIXED_GLOBAL set by the topological
builder instead of the constructor). This prevent the router to do
stupid things...
To sets the "Fixed" flag *after* the axis of global segments have been
positionned correctly adds a "_toFixGlobals" static table lookup.
- Change: In GCell::stepDesaturate(), if less than one free track remains in
the upper layer, do not move up the segment. This allows from a minimum
free room for expansion.
- Change: In GCell::_getString(), display indexes and layer names in various
saturation tables.
- Change: In AutoSegment, allow move up of local Segment. ::moveUp() and
::canMoveUp() arguments go from booleans to flags, which are more
explicits.
- Change: In loadGlobalRouting(), more exlicit message as to why a net is
filtered out the routing set (POWER, GROUND, CLOCK or BLOCKAGE).
- New: ChipTool, module with utilities specific to chip routing. Containing
a function to pre-break wires around a block.
- New: In loadGlobalRouting/GCellConfiguration, adds supports for RoutingPad
connected on chip's pad.
- New: In GCellGrid/GCell, can compute the density in three modes: average,
max of H/V and max of layer. Currently implemented in getMaxHVDensity(),
should be unificated with getDensity(). Used for display purposes.
- Bug: In AutoContact, when splitting a contact, add a specific check for
"one layer span".
- Bug: In AutoSegment::canMoveUp(), do not move up fixed segments.
- New: To pass the ibmXX, new parameter "katabatic.saturateRp" which allows
to sets the threshold above which a GCell has too much RoutingPads in
it and must be further desaturated. Must be 8 for FPGA, and 10 for ibm.
- Bug: In LoadGrByNet(), when looking for the starting GCell, the computation
of unconnecteds RoutingPads was incorrect, too great and letting the
router believe that the routage was incomplete.
- Change: In KatabaticEngine, the containers used to store the "nets to
route" is changed from a vector<> to a set<> sorted by the Nets names.
Uses more memory but allows much faster Net deletion.
- New: In _loadNetGlobalRouting(Net*), detect non-routed Nets. A Net is
considered as unrouted if it's 10 first RoutingPads have no slave
Segment. The Net is withdrawn from the set of Nets to route.
- Bug: In GCellConfiguration::_GCell_1G_1L1(), correctly compute the
access flag passed to _GCell_rp_Access().
- Change: In AutoContact::restrictConstraintBox() adds "warnOnError"
parameter to shut down warnings.
- New: KatabaticEngine::_computeNetConstraints() now also returns a set<>
of segments on which constraints are incompatibles. All the NetConstraints
related functions are modificateds accordingly.
- Change: In KatabaticEngine::_loadNetGlobalRouting(), create dogleg
on overconstrained Segments computed by a call to _computeNetConstraints().
Overconstraineds Segments can occurs when a global is directly
connecting two punctual RoutingPads (see "ieee_division").
As a side effect, and to avoid looping each Net is revalidated
*before* making any dogleg. So Nets are revalidated one by one instead
of alltogether.
- Change: In AutoSegment::_toConstraintAxis(), do nothing if constraint
interval is empty.
- Bug: In KatabaticEnginge::_desaturate() (part of LayerAssign), reset
the moved up Segment pointer between iterations. Suppress the warning
about the GCell's DyKeyQueue beeing not revalidated on deletion.
- Change: In LoadGrByNet, manage the 4G+3L1 configuration with the generic
_GCell_xG_xL1_xL3(). Needed for "dct_lvl2".
- Change: In Grid/BaseGrid, add an Abutment Box attribute (to facilitate
segment truncation in Kite::TrackFixedSegment.
- Change: In Grid/BaseGrid::Axis, when computing a row/column index using
the graduation table, if the coordinate is exactly on the last
graduation, return the last GCell instead of "out of bound".
- Change: In GCell::hasFreeTrack(), AutoSegment::canMoveUp() &
AutoSegment::canPivotUp() adds a "reserve" parameter to modify the
amount of wirelength to remains free after the insertion.
- Bug: In GCell, bad cast between <size_t> and <unsigned int>, showed only
under 64 bits.
- New: In KatabaticEngine::printMeasures(), adds a support for measurments,
both time and memory size in Mb are stored for each tag.
- New: Adds measurements "Gates", "GCells", "load" & "assign".
- New: In GCell & LayerAssign, adds a supplemental desaturation steps when
a GCell containts too many (more than 7) RoutingPads in M1. This is
especially useful for the eFPGA matrix with it's custom made cells.
./coriolis/src/crlcore,
./coriolis/src/knik,
./coriolis/src/katabatic,
./coriolis/src/kite,
./coriolis/src/equinox,
./coriolis/src/solstice,
./coriolis/src/ispd:
- SVN MOVE: Source tree simplification & uniformisation. Now all tools
are at the same level, directly under the root of the repository.
No more "coriolis/src".
Jean-Paul Chaput