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Support power operator with real, bug809.

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This commit is contained in:
Wilson Snyder
2014-09-21 08:24:44 -04:00
parent 27af9b6b06
commit 6e476255ca
4 changed files with 16 additions and 3 deletions
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src/V3Width.cpp
+10 -3
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@@ -690,15 +690,21 @@ private:
// Pow is special, output sign only depends on LHS sign, but function result depends on both signs
// RHS is self-determined (IEEE)
// Real if either side is real (as with AstAdd)
iterate_shift_prelim(nodep, vup); // Iterate rhsp() as self-determined
if (vup->c()->prelim()) {
nodep->lhsp()->iterateAndNext(*this,WidthVP(CONTEXT,PRELIM).p());
nodep->rhsp()->iterateAndNext(*this,WidthVP(CONTEXT,PRELIM).p());
if (nodep->lhsp()->isDouble() || nodep->rhsp()->isDouble()) {
spliceCvtD(nodep->lhsp());
spliceCvtD(nodep->rhsp());
replaceWithDVersion(nodep); nodep=NULL;
return;
}
checkCvtUS(nodep->lhsp());
iterateCheckSizedSelf(nodep,"RHS",nodep->rhsp(),SELF,BOTH);
nodep->dtypeFrom(nodep->lhsp());
}
if (vup->c()->final()) {
AstNodeDType* expDTypep = vup->c()->dtypeOverridep(nodep->dtypep());
nodep->dtypeFrom(expDTypep);
@@ -2297,7 +2303,7 @@ private:
if (newp) {} // Ununused
}
void iterate_shift_prelim(AstNodeBiop* nodep, AstNUser* vup) {
// Shifts, Pow
// Shifts
// See IEEE-2012 11.4.10 and Table 11-21.
// RHS is self-determined. RHS is always treated as unsigned, has no effect on result.
if (vup->c()->prelim()) {
@@ -2885,6 +2891,7 @@ private:
switch (nodep->type()) {
case AstType::atADD: newp = new AstAddD (fl,lhsp,rhsp); break;
case AstType::atSUB: newp = new AstSubD (fl,lhsp,rhsp); break;
case AstType::atPOW: newp = new AstPowD (fl,lhsp,rhsp); break;
case AstType::atEQ: case AstType::atEQCASE: newp = new AstEqD (fl,lhsp,rhsp); break;
case AstType::atNEQ: case AstType::atNEQCASE: newp = new AstNeqD (fl,lhsp,rhsp); break;
case AstType::atGT: case AstType::atGTS: newp = new AstGtD (fl,lhsp,rhsp); break;