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Internals: AstConst named functions when want true/false size 1

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This commit is contained in:
Wilson Snyder
2009-11-22 20:05:33 -05:00
parent d7a2362a76
commit 2f2f367c0b
5 changed files with 20 additions and 11 deletions
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src/V3Case.cpp
+5 -5
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@@ -308,7 +308,7 @@ private:
for (AstCaseItem* itemp = nodep->itemsp(); itemp; itemp=itemp->nextp()->castCaseItem()) {
if (!itemp->condsp()) {
// Default clause. Just make true, we'll optimize it away later
itemp->condsp(new AstConst(itemp->fileline(), V3Number(itemp->fileline(), 1,1)));
itemp->condsp(new AstConst(itemp->fileline(), AstConst::LogicTrue()));
hadDefault = true;
} else {
// Expressioned clause
@@ -326,8 +326,8 @@ private:
icondp->deleteTree(); icondp=NULL; iconstp=NULL;
// For simplicity, make expression that is not equal, and let later
// optimizations remove it
and1p = new AstConst(itemp->fileline(), V3Number(itemp->fileline(),1,0));
and2p = new AstConst(itemp->fileline(), V3Number(itemp->fileline(),1,1));
and1p = new AstConst(itemp->fileline(), AstConst::LogicFalse());
and2p = new AstConst(itemp->fileline(), AstConst::LogicTrue());
} else if (iconstp && iconstp->num().isFourState()
&& (nodep->casex() || nodep->casez())) {
V3Number nummask (itemp->fileline(), iconstp->width());
@@ -361,7 +361,7 @@ private:
// If there was no default, add a empty one, this greatly simplifies below code
// and constant propagation will just eliminate it for us later.
nodep->addItemsp(new AstCaseItem(nodep->fileline(),
new AstConst(nodep->fileline(), V3Number(nodep->fileline(),1,1)),
new AstConst(nodep->fileline(), AstConst::LogicTrue()),
NULL));
}
if (debug()>=9) nodep->dumpTree(cout," _comp_COND: ");
@@ -398,7 +398,7 @@ private:
AstNode* itemexprp = ifexprp; ifexprp=NULL;
if (depth == (CASE_ENCODER_GROUP_DEPTH)) { // End of group - can skip the condition
itemexprp->deleteTree(); itemexprp=NULL;
itemexprp = new AstConst(itemp->fileline(), V3Number(itemp->fileline(),1,1));
itemexprp = new AstConst(itemp->fileline(), AstConst::LogicTrue());
}
AstIf* newp = new AstIf(itemp->fileline(), itemexprp, istmtsp, NULL);
if (itemnextp) itemnextp->addElsesp(newp);