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Internals: Add dtype to InitArray; misc Slice cleanups. From bug355 branch.

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This commit is contained in:
Wilson Snyder
2014-03-30 20:28:51 -04:00
parent 17b8b660f0
commit 6e3e8318d0
5 changed files with 46 additions and 40 deletions
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src/V3Slice.cpp
+24 -31
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@@ -70,7 +70,7 @@ class SliceCloneVisitor : public AstNVisitor {
// VISITORS
virtual void visit(AstArraySel* nodep, AstNUser*) {
if (!nodep->backp()->castArraySel()) {
// This is the top of an ArraySel, setup
// This is the top of an ArraySel, setup for iteration
m_refp = nodep->user1p()->castNode()->castVarRef();
m_vecIdx += 1;
if (m_vecIdx == (int)m_selBits.size()) {
@@ -78,6 +78,7 @@ class SliceCloneVisitor : public AstNVisitor {
AstVar* varp = m_refp->varp();
pair<uint32_t,uint32_t> arrDim = varp->dtypep()->dimensions(false);
uint32_t dimensions = arrDim.second;
// for 3-dimensions we want m_selBits[m_vecIdx]=[0,0,0]
for (uint32_t i = 0; i < dimensions; ++i) {
m_selBits[m_vecIdx].push_back(0);
}
@@ -165,19 +166,15 @@ class SliceCloneVisitor : public AstNVisitor {
nodep->addNextHere(lhsp);
nodep->unlinkFrBack()->deleteTree(); nodep = NULL;
}
virtual void visit(AstRedOr* nodep, AstNUser*) {
cloneUniop(nodep);
}
virtual void visit(AstRedAnd* nodep, AstNUser*) {
cloneUniop(nodep);
}
virtual void visit(AstRedXor* nodep, AstNUser*) {
cloneUniop(nodep);
}
virtual void visit(AstRedXnor* nodep, AstNUser*) {
cloneUniop(nodep);
}
@@ -188,8 +185,8 @@ class SliceCloneVisitor : public AstNVisitor {
}
public:
// CONSTUCTORS
SliceCloneVisitor(AstNode* assignp) {
assignp->accept(*this);
SliceCloneVisitor(AstNode* nodep) {
nodep->accept(*this);
}
virtual ~SliceCloneVisitor() {}
};
@@ -223,8 +220,8 @@ class SliceVisitor : public AstNVisitor {
return level;
}
// Find out how many explicit dimensions are in a given ArraySel.
unsigned explicitDimensions(AstArraySel* nodep) {
// Find out how many explicit dimensions are in a given ArraySel.
unsigned dim = 0;
AstNode* fromp = nodep;
AstArraySel* selp;
@@ -243,10 +240,23 @@ class SliceVisitor : public AstNVisitor {
return dim;
}
int countClones(AstArraySel* nodep) {
// Count how many clones we need to make from this ArraySel
int clones = 1;
AstNode* fromp = nodep;
AstArraySel* selp;
do {
selp = fromp->castArraySel();
fromp = (selp) ? selp->fromp() : NULL;
if (fromp && selp) clones *= selp->length();
} while (fromp && selp);
return clones;
}
AstArraySel* insertImplicit(AstNode* nodep, unsigned start, unsigned count) {
// Insert any implicit slices as explicit slices (ArraySel nodes).
// Return a new pointer to replace nodep() in the ArraySel.
UINFO(9," insertImplicit "<<nodep<<endl);
UINFO(9," insertImplicit (start="<<start<<",c="<<count<<") "<<nodep<<endl);
AstVarRef* refp = nodep->user1p()->castNode()->castVarRef();
if (!refp) nodep->v3fatalSrc("No VarRef in user1 of node "<<nodep);
AstVar* varp = refp->varp();
@@ -269,28 +279,15 @@ class SliceVisitor : public AstNVisitor {
newp->user1p(refp);
newp->start(lsb);
newp->length(msb - lsb + 1);
topp = newp->castNode();
topp = newp;
}
return topp->castArraySel();
}
int countClones(AstArraySel* nodep) {
// Count how many clones we need to make from this ArraySel
int clones = 1;
AstNode* fromp = nodep;
AstArraySel* selp;
do {
selp = fromp->castArraySel();
fromp = (selp) ? selp->fromp() : NULL;
if (fromp && selp) clones *= selp->length();
} while (fromp && selp);
return clones;
}
// VISITORS
virtual void visit(AstVarRef* nodep, AstNUser*) {
// The LHS/RHS of an Assign may be to a Var that is an array. In this
// case we need to create a slice accross the entire Var
// case we need to create a slice across the entire Var
if (m_assignp && !nodep->backp()->castArraySel()) {
pair<uint32_t,uint32_t> arrDim = nodep->varp()->dtypep()->dimensions(false);
uint32_t dimensions = arrDim.second; // unpacked only
@@ -382,8 +379,8 @@ class SliceVisitor : public AstNVisitor {
refp = findVarRefRecurse(nodep->op3p());
if (refp) return refp;
}
if (nodep->op3p()) {
refp = findVarRefRecurse(nodep->op3p());
if (nodep->op4p()) {
refp = findVarRefRecurse(nodep->op4p());
if (refp) return refp;
}
if (nodep->nextp()) {
@@ -424,7 +421,7 @@ class SliceVisitor : public AstNVisitor {
dim = explicitDimensions(selp);
}
if (dim == 0 && !nodep->lhsp()->castVarRef()) {
// No ArraySel or VarRef, not something we can expand
// No ArraySel nor VarRef, not something we can expand
nodep->iterateChildren(*this);
} else {
AstVarRef* refp = findVarRefRecurse(nodep->lhsp());
@@ -445,25 +442,21 @@ class SliceVisitor : public AstNVisitor {
}
}
}
virtual void visit(AstRedOr* nodep, AstNUser*) {
if (!nodep->user1()) {
expandUniOp(nodep);
}
}
virtual void visit(AstRedAnd* nodep, AstNUser*) {
if (!nodep->user1()) {
expandUniOp(nodep);
}
}
virtual void visit(AstRedXor* nodep, AstNUser*) {
if (!nodep->user1()) {
expandUniOp(nodep);
}
}
virtual void visit(AstRedXnor* nodep, AstNUser*) {
if (!nodep->user1()) {
expandUniOp(nodep);