Internals: Add V3Number width-and-opAssign. No functional change.

src/V3Const.cpp

@@ -1368,8 +1368,7 @@ class ConstVisitor final : public VNVisitor {
         nodep->rhsp(smallerp);
 
         constp->unlinkFrBack();
-        V3Number num{constp, subsize};
+        V3Number num{constp, subsize, constp->num()};
-        num.opAssign(constp->num());
         nodep->lhsp(new AstConst{constp->fileline(), num});
         VL_DO_DANGLING(pushDeletep(constp), constp);
         if (debug() >= 9) nodep->dumpTree("-  BI(EXTEND)-ou: ");

src/V3Number.h

@@ -466,6 +466,11 @@ public:
     V3Number(AstNode* nodep, int width) {  // 0=unsized
         init(nodep, width, width > 0);
     }
+    // Construct with value, changing to new width
+    V3Number(AstNode* nodep, int width, const V3Number& value) {
+        init(nodep, width, width > 0);
+        opAssign(value);
+    }
     V3Number(AstNode* nodep, int width, uint32_t value, bool sized = true) {
         init(nodep, width, sized);
         m_data.num()[0].m_value = value;

src/V3Simulate.h

@@ -603,8 +603,7 @@ private:
             // but in reality it would yield '0's without V3Table, so force 'x' bits to '0',
             // to ensure the result is the same with and without V3Table.
             if (!m_params && VN_IS(nodep, Sel) && valuep->num().isAnyX()) {
-                V3Number num{valuep, valuep->width()};
+                V3Number num{valuep, valuep->width(), valuep->num()};
-                num.opAssign(valuep->num());
                 valuep->num().opBitsOne(num);
             }
         }

src/V3Width.cpp

@@ -6764,8 +6764,7 @@ class WidthVisitor final : public VNVisitor {
             if (nodep->rhsp()->width() > 32) {
                 if (shiftp && shiftp->num().mostSetBitP1() <= 32) {
                     // If (number)<<96'h1, then make it into (number)<<32'h1
-                    V3Number num(shiftp, 32, 0);
+                    V3Number num{shiftp, 32, shiftp->num()};
-                    num.opAssign(shiftp->num());
                     AstNode* const shiftrhsp = nodep->rhsp();
                     nodep->rhsp()->replaceWith(new AstConst{shiftrhsp->fileline(), num});
                     VL_DO_DANGLING(shiftrhsp->deleteTree(), shiftrhsp);
@@ -6935,8 +6934,7 @@ class WidthVisitor final : public VNVisitor {
         const int expWidth = expDTypep->width();
         if (constp && !constp->num().isNegative()) {
             // Save later constant propagation work, just right-size it.
-            V3Number num(nodep, expWidth);
+            V3Number num{nodep, expWidth, constp->num()};
-            num.opAssign(constp->num());
             num.isSigned(false);
             AstNodeExpr* const newp = new AstConst{nodep->fileline(), num};
             constp->replaceWith(newp);

src/V3WidthCommit.h

@@ -30,8 +30,7 @@ public:
     static AstConst* newIfConstCommitSize(AstConst* nodep) {
         if (((nodep->dtypep()->width() != nodep->num().width()) || !nodep->num().sized())
             && !nodep->num().isString()) {  // Need to force the number from unsized to sized
-            V3Number num{nodep, nodep->dtypep()->width()};
+            V3Number num{nodep, nodep->dtypep()->width(), nodep->num()};
-            num.opAssign(nodep->num());
             num.isSigned(nodep->isSigned());
             AstConst* const newp = new AstConst{nodep->fileline(), num};
             newp->dtypeFrom(nodep);