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Internals: Move V3WidthSel::range into V3Width. No functional change intended.

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This commit is contained in:
Wilson Snyder
2013-01-12 14:23:56 -05:00
parent c00603704e
commit 5888a2c399
3 changed files with 36 additions and 31 deletions
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src/V3WidthSel.cpp
+1 -27
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@@ -65,6 +65,7 @@ private:
}
void checkConstantOrReplace(AstNode* nodep, const string& message) {
// See also V3Width::checkConstantOrReplace
// Note can't call V3Const::constifyParam(nodep) here, as constify may change nodep on us!
if (!nodep->castConst()) {
nodep->v3error(message);
@@ -186,33 +187,6 @@ private:
// VISITORS
// If adding new visitors, insure V3Width's visit(TYPE) calls into here
virtual void visit(AstRange* nodep, AstNUser*) {
// Convert all range values to constants
UINFO(6,"RANGE "<<nodep<<endl);
V3Const::constifyParamsEdit(nodep->msbp()); // May relink pointed to node
V3Const::constifyParamsEdit(nodep->lsbp()); // May relink pointed to node
checkConstantOrReplace(nodep->msbp(), "MSB of bit range isn't a constant");
checkConstantOrReplace(nodep->lsbp(), "LSB of bit range isn't a constant");
int msb = nodep->msbConst();
int lsb = nodep->lsbConst();
if (msb<lsb) {
// If it's an array, ok to have either ordering, we'll just correct
// So, see if we're sitting under a variable's arrayp.
AstNode* huntbackp = nodep;
while (huntbackp->backp()->castRange()) huntbackp=huntbackp->backp();
if (huntbackp->backp()->castArrayDType()) {
} else {
// Little endian bits are legal, just remember to swap
// Warning is in V3Width to avoid false warnings when in "off" generate if's
nodep->littleEndian(!nodep->littleEndian());
}
// Internally we'll always have msb() be the greater number
// We only need to correct when doing [] AstSel extraction,
// and when tracing the vector.
nodep->msbp()->swapWith(nodep->lsbp());
}
}
virtual void visit(AstSelBit* nodep, AstNUser*) {
UINFO(6,"SELBIT "<<nodep<<endl);
if (debug()>=9) nodep->backp()->dumpTree(cout,"-vsbin(-1): ");