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Support byte, shortint, int, longint in variables, parameters and functions.

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Internals: function/var sizing and signing now comes via dtypep()
Internals: cleanup code that widths parameters (again)
This commit is contained in:
Wilson Snyder
2009-11-02 22:14:11 -05:00
parent 4c26792c9b
commit 6bc81d3d26
12 changed files with 321 additions and 198 deletions
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src/V3Signed.cpp
+16 -9
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@@ -138,7 +138,6 @@ private:
//=======
// These have proper signedness set when they were created.
virtual void visit(AstFunc* nodep, AstNUser*) { nodep->iterateChildren(*this); }
virtual void visit(AstNodeDType* nodep, AstNUser*) { nodep->iterateChildren(*this); }
// Inherit from others
@@ -150,20 +149,28 @@ private:
nodep->varp()->iterate(*this);
nodep->signedFrom(nodep->varp());
}
virtual void visit(AstFuncRef* nodep, AstNUser* vup) {
visit(nodep->castNodeFTaskRef(), vup); // Deal with as if was task
nodep->signedFrom(nodep->taskp());
}
virtual void visit(AstConst* nodep, AstNUser*) {
// The node got setup with the signed state of the node.
// However a later operation may have changed the node->signed w/o changing
// the number's sign. So we don't: nodep->isSigned(nodep->num().isSigned());
}
virtual void visit(AstNodeFTaskRef* nodep, AstNUser*) {
// Fortunately, the input variables to the task keep whatever sign they are given
// And we already did the function's output signedness above in visit(AstFuncRef,
// so, it's just
virtual void visit(AstFunc* nodep, AstNUser*) {
// Avoid recursion; can't use user() as they're all full, and anyhow this is often called
if (nodep->didSigning()) return;
nodep->didSigning(true);
nodep->iterateChildren(*this);
nodep->signedFrom(nodep->fvarp()); // Which will get it from fvarp()->dtypep()
}
virtual void visit(AstTask* nodep, AstNUser*) {
// Avoid recursion; can't use user() as they're all full, and anyhow this is often called
if (nodep->didSigning()) return;
nodep->didSigning(true);
nodep->iterateChildren(*this);
}
virtual void visit(AstNodeFTaskRef* nodep, AstNUser*) {
nodep->iterateChildren(*this);
if (nodep->taskp()) nodep->taskp()->iterate(*this);
nodep->signedFrom(nodep->taskp());
}
virtual void visit(AstNodeIf* nodep, AstNUser*) {
if (!nodep->castGenIf()) { // for m_paramsOnly