From e7d81913a48bffd970f7a92acc44eb36d9f996f7 Mon Sep 17 00:00:00 2001
From: Keith Rothman <537074+litghost@users.noreply.github.com>
Date: Thu, 18 Mar 2021 16:31:40 -0700
Subject: Add "checkPipAvailForNet" to Arch API.

This is important for distiguishing valid pseudo pips in the FPGA
interchange arch. This also avoids a double or triple lookup of
pip->net map.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
---
 generic/arch.cc | 6 ++++++
 generic/arch.h  | 1 +
 2 files changed, 7 insertions(+)

(limited to 'generic')

diff --git a/generic/arch.cc b/generic/arch.cc
index 1f9531c7..a683e34e 100644
--- a/generic/arch.cc
+++ b/generic/arch.cc
@@ -450,6 +450,12 @@ void Arch::unbindPip(PipId pip)
 
 bool Arch::checkPipAvail(PipId pip) const { return pips.at(pip).bound_net == nullptr; }
 
+bool Arch::checkPipAvailForNet(PipId pip, NetInfo *net) const
+{
+    NetInfo *bound_net = pips.at(pip).bound_net;
+    return bound_net == nullptr || bound_net == net;
+}
+
 NetInfo *Arch::getBoundPipNet(PipId pip) const { return pips.at(pip).bound_net; }
 
 NetInfo *Arch::getConflictingPipNet(PipId pip) const { return pips.at(pip).bound_net; }
diff --git a/generic/arch.h b/generic/arch.h
index 1d37b2fd..92260ce0 100644
--- a/generic/arch.h
+++ b/generic/arch.h
@@ -279,6 +279,7 @@ struct Arch : ArchAPI<ArchRanges>
     void bindPip(PipId pip, NetInfo *net, PlaceStrength strength) override;
     void unbindPip(PipId pip) override;
     bool checkPipAvail(PipId pip) const override;
+    bool checkPipAvailForNet(PipId pip, NetInfo *net) const override;
     NetInfo *getBoundPipNet(PipId pip) const override;
     WireId getConflictingPipWire(PipId pip) const override;
     NetInfo *getConflictingPipNet(PipId pip) const override;
-- 
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