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Wilson Snyder 2013-01-12 14:51:16 -05:00
parent 5888a2c399
commit 18c25d1b6f
1 changed files with 7 additions and 5 deletions
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12
src/V3WidthSel.cpp
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@ -51,11 +51,6 @@ private:
// complicated GenCase/GenFor/Cell/Function call logic that all depends // complicated GenCase/GenFor/Cell/Function call logic that all depends
// on if widthing top-down or just for parameters. // on if widthing top-down or just for parameters.
#define iterateChildren DO_NOT_iterateChildern_IN_V3WidthSel #define iterateChildren DO_NOT_iterateChildern_IN_V3WidthSel
//
// NODE STATE
// isBelowSeled() used insead of userp, as we're out of
// non-conflicting users, and having a persistent variable means this
// code can be skipped during most later stage constification calls.
// METHODS // METHODS
static int debug() { static int debug() {
@ -188,6 +183,8 @@ private:
// If adding new visitors, insure V3Width's visit(TYPE) calls into here // If adding new visitors, insure V3Width's visit(TYPE) calls into here
virtual void visit(AstSelBit* nodep, AstNUser*) { virtual void visit(AstSelBit* nodep, AstNUser*) {
// Select of a non-width specified part of an array, i.e. "array[2]"
// This select style has a lsb and msb (no user specified width)
UINFO(6,"SELBIT "<<nodep<<endl); UINFO(6,"SELBIT "<<nodep<<endl);
if (debug()>=9) nodep->backp()->dumpTree(cout,"-vsbin(-1): "); if (debug()>=9) nodep->backp()->dumpTree(cout,"-vsbin(-1): ");
// lhsp/rhsp do not need to be constant // lhsp/rhsp do not need to be constant
@ -240,7 +237,9 @@ private:
} }
virtual void visit(AstSelExtract* nodep, AstNUser*) { virtual void visit(AstSelExtract* nodep, AstNUser*) {
// Select of a range specified part of an array, i.e. "array[2:3]"
// SELEXTRACT(from,msb,lsb) -> SEL(from, lsb, 1+msb-lsb) // SELEXTRACT(from,msb,lsb) -> SEL(from, lsb, 1+msb-lsb)
// This select style has a (msb or lsb) and width
UINFO(6,"SELEXTRACT "<<nodep<<endl); UINFO(6,"SELEXTRACT "<<nodep<<endl);
//if (debug()>=9) nodep->dumpTree(cout,"--SLEX0: "); //if (debug()>=9) nodep->dumpTree(cout,"--SLEX0: ");
// Below 2 lines may change nodep->widthp() // Below 2 lines may change nodep->widthp()
@ -317,6 +316,8 @@ private:
} }
void replaceSelPlusMinus(AstNodePreSel* nodep) { void replaceSelPlusMinus(AstNodePreSel* nodep) {
// Select of a range specified with +: or -:, i.e. "array[2+:3], [2-:3]"
// This select style has a lsb and width
UINFO(6,"SELPLUS/MINUS "<<nodep<<endl); UINFO(6,"SELPLUS/MINUS "<<nodep<<endl);
// Below 2 lines may change nodep->widthp() // Below 2 lines may change nodep->widthp()
V3Const::constifyParamsEdit(nodep->thsp()); // May relink pointed to node V3Const::constifyParamsEdit(nodep->thsp()); // May relink pointed to node
@ -389,6 +390,7 @@ private:
// Default // Default
virtual void visit(AstNode* nodep, AstNUser*) { virtual void visit(AstNode* nodep, AstNUser*) {
// See notes above; we never iterate // See notes above; we never iterate
nodep->v3fatalSrc("Shouldn't iterate in V3WidthSel");
} }
public: public: