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Leak repairs and node leak detection

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git-svn-id: file://localhost/svn/verilator/trunk/verilator@967 77ca24e4-aefa-0310-84f0-b9a241c72d87
This commit is contained in:
Wilson Snyder
2007-11-02 11:23:03 +00:00
parent 8075372675
commit 98e35b02ad
23 changed files with 362 additions and 169 deletions
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src/V3Case.cpp
+9 -3
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@@ -218,7 +218,10 @@ private:
a++, b++) {
if (m_valueItem[a] != m_valueItem[b]) { same=false; break; }
}
if (same) return tree0p;
if (same) {
tree1p->deleteTree(); tree1p=NULL;
return tree0p;
}
// Must have differing logic, so make a selection
@@ -245,8 +248,7 @@ private:
// CASEx(cexpr,....
// -> tree of IF(msb, IF(msb-1, 11, 10)
// IF(msb-1, 01, 00))
AstNode* cexprp = nodep->exprp();
cexprp->unlinkFrBack();
AstNode* cexprp = nodep->exprp()->unlinkFrBack();
if (debug()>=9) {
for (uint32_t i=0; i<(1UL<<m_caseWidth); i++) {
@@ -264,6 +266,8 @@ private:
if (ifrootp) nodep->replaceWith(ifrootp);
else nodep->unlinkFrBack();
nodep->deleteTree(); nodep=NULL;
cexprp->deleteTree(); cexprp=NULL;
if (debug()>=9) ifrootp->dumpTree(cout," _simp: ");
}
@@ -304,6 +308,7 @@ private:
and2p = new AstAnd(itemp->fileline(),
new AstConst(itemp->fileline(), numval),
new AstConst(itemp->fileline(), nummask));
icondp->deleteTree(); icondp=NULL; iconstp=NULL;
} else {
// Not a caseX mask, we can simply build CASEEQ(cexpr icond)
and1p = cexprp->cloneTree(false);
@@ -320,6 +325,7 @@ private:
itemp->condsp(ifexprp);
}
}
cexprp->deleteTree(); cexprp=NULL;
if (!hadDefault) {
// If there was no default, add a empty one, this greatly simplifies below code
// and constant propagation will just eliminate it for us later.