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Support little endian bit vectors ("reg [0:2] x;").

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This commit is contained in:
Wilson Snyder
2009-10-25 16:53:55 -04:00
parent 350028553b
commit 39444d83c5
25 changed files with 785 additions and 287 deletions
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src/V3Param.cpp
+19 -4
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@@ -55,7 +55,9 @@ private:
// NODE STATE
// AstModule::user4() // bool True if parameters numbered
// AstVar::user4() // int Global parameter number (for naming new module)
// // (0=not processed, 1=iterated, but no number, 65+ parameter numbered)
AstUser4InUse m_inuser4;
// User1/2/3 used by constant function simulations
// STATE
typedef std::map<AstVar*,AstVar*> VarCloneMap;
@@ -93,7 +95,7 @@ private:
}
}
string paramSmallName(AstModule* modp, AstVar* varp) {
if (!varp->user4()) {
if (varp->user4()<=1) {
makeSmallNames(modp);
}
int index = varp->user4()/256;
@@ -129,11 +131,19 @@ private:
// Make sure all parameters are constantified
virtual void visit(AstVar* nodep, AstNUser*) {
if (nodep->isParam()) {
if (!nodep->hasSimpleInit()) { nodep->v3fatalSrc("Parameter without initial value"); }
V3Const::constifyParamsEdit(nodep); // The variable, not just the var->init()
if (!nodep->user4()) {
nodep->user4(1); // Mark done - Note values >1 used for letter numbering
nodep->iterateChildren(*this);
if (nodep->isParam()) {
if (!nodep->hasSimpleInit()) { nodep->v3fatalSrc("Parameter without initial value"); }
V3Const::constifyParamsEdit(nodep); // The variable, not just the var->init()
}
}
}
// Make sure varrefs cause vars to constify before things above
virtual void visit(AstVarRef* nodep, AstNUser*) {
if (nodep->varp()) nodep->varp()->iterate(*this);
}
// Generate Statements
virtual void visit(AstGenerate* nodep, AstNUser*) {
@@ -151,6 +161,7 @@ private:
nodep->deleteTree(); nodep=NULL;
}
virtual void visit(AstGenIf* nodep, AstNUser*) {
nodep->condp()->iterateAndNext(*this);
V3Width::widthParamsEdit(nodep); // Param typed widthing will NOT recurse the body
V3Const::constifyParamsEdit(nodep->condp()); // condp may change
if (AstConst* constp = nodep->condp()->castConst()) {
@@ -173,10 +184,12 @@ private:
// We parse a very limited form of FOR, so we don't need to do a full
// simulation to unroll the loop
V3Width::widthParamsEdit(nodep); // Param typed widthing will NOT recurse the body
// Note V3Unroll will replace some AstVarRef's to the loop variable with constants
V3Unroll::unrollGen(nodep); nodep=NULL;
}
virtual void visit(AstGenCase* nodep, AstNUser*) {
AstNode* keepp = NULL;
nodep->exprp()->iterateAndNext(*this);
V3Case::caseLint(nodep);
V3Width::widthParamsEdit(nodep); // Param typed widthing will NOT recurse the body
V3Const::constifyParamsEdit(nodep->exprp()); // exprp may change
@@ -185,6 +198,7 @@ private:
for (AstCaseItem* itemp = nodep->itemsp(); itemp; itemp=itemp->nextp()->castCaseItem()) {
for (AstNode* ep = itemp->condsp(); ep; ) {
AstNode* nextp = ep->nextp(); //May edit list
ep->iterateAndNext(*this);
V3Const::constifyParamsEdit(ep); ep=NULL; // ep may change
ep = nextp;
}
@@ -240,6 +254,7 @@ public:
void ParamVisitor::visit(AstCell* nodep, AstNUser*) {
// Cell: Check for parameters in the instantiation.
nodep->iterateChildren(*this);
if (!nodep->modp()) { nodep->dumpTree(cerr,"error:"); nodep->v3fatalSrc("Not linked?"); }
if (nodep->paramsp()) {
UINFO(4,"De-parameterize: "<<nodep<<endl);