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Propagate sign in synthesize for math operators. 

The sign of the expression needs to be propagated for the
math operators when they are synthesized.
(cherry picked from commit a49463e728)
This commit is contained in:
Cary R 2009-08-25 10:41:07 -07:00 committed by Stephen Williams
parent 72c02a8285
commit 5d4c8d616a
1 changed files with 3 additions and 0 deletions
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3
expr_synth.cc
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@ -122,6 +122,7 @@ NetNet* NetEBAdd::synthesize(Design*des, NetScope*scope, NetExpr*root)
NetNet*osig = new NetNet(lsig->scope(), path, NetNet::IMPLICIT, width);
osig->local_flag(true);
osig->data_type(expr_type());
osig->set_signed(has_sign());
perm_string oname = osig->scope()->local_symbol();
NetAddSub *adder = new NetAddSub(lsig->scope(), oname, width);
@ -390,6 +391,7 @@ NetNet* NetEBPow::synthesize(Design*des, NetScope*scope, NetExpr*root)
NetNet::IMPLICIT, width);
osig->set_line(*this);
osig->data_type(expr_type());
osig->set_signed(has_sign());
osig->local_flag(true);
connect(powr->pin_Result(), osig->pin(0));
@ -426,6 +428,7 @@ NetNet* NetEBMult::synthesize(Design*des, NetScope*scope, NetExpr*root)
NetNet::IMPLICIT, width);
osig->set_line(*this);
osig->data_type(expr_type());
osig->set_signed(has_sign());
osig->local_flag(true);
connect(mult->pin_Result(), osig->pin(0));