luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-10-05 17:43:31 +02:00
Code Issues Packages Projects Releases Wiki Activity

IMPORTANT: Major internal changes for supporting complex data types.

Browse Source 
Adds dtype() to every node, keep global table of dtypes and remove duplicates.
Final merge from dtype branch.
This commit is contained in:
Wilson Snyder
2012-04-29 10:14:13 -04:00
parent c0da16bfcd
commit 87e8736823
34 changed files with 1049 additions and 400 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3Clean.cpp
+20 -6
View File
@@ -49,8 +49,10 @@ private:
// Entire netlist:
// AstNode::user() -> CleanState. For this node, 0==UNKNOWN
// AstNode::user2() -> bool. True indicates widthMin has been propagated
// AstNodeDType::user3() -> AstNodeDType*. Alternative node with C size
AstUser1InUse m_inuser1;
AstUser2InUse m_inuser2;
AstUser3InUse m_inuser3;
// TYPES
enum CleanState { CS_UNKNOWN, CS_CLEAN, CS_DIRTY };
@@ -71,16 +73,28 @@ private:
else if (nodep->width()<=VL_QUADSIZE) return VL_QUADSIZE;
else return nodep->widthWords()*VL_WORDSIZE;
}
void setCppWidth (AstNode* nodep, int width, int widthMin) {
void setCppWidth (AstNode* nodep) {
nodep->user2(true); // Don't resize it again
nodep->width(width, widthMin);
AstNodeDType* old_dtypep = nodep->dtypep();
int width=cppWidth(nodep); // widthMin is unchanged
if (old_dtypep->width() != width) {
// Since any given dtype's cppWidth() is the same, we can just
// remember one convertion for each, and reuse it
if (AstNodeDType* new_dtypep = old_dtypep->user3p()->castNode()->castNodeDType()) {
nodep->dtypep(new_dtypep);
} else {
nodep->dtypeChgWidth(width, nodep->widthMin());
AstNodeDType* new_dtypep = nodep->dtypep();
if (new_dtypep == old_dtypep) nodep->v3fatalSrc("Dtype didn't change when width changed");
old_dtypep->user3p(new_dtypep); // Remember for next time
}
}
}
void computeCppWidth (AstNode* nodep) {
if (!nodep->user2()) {
if (!nodep->user2() && nodep->hasDType()) {
if (nodep->castVar() || nodep->castNodeDType()) { // Don't want to change variable widths!
setCppWidth(nodep, nodep->width(), nodep->width()); // set widthMin anyways so can see it later
} else {
setCppWidth(nodep, cppWidth(nodep), nodep->widthMin());
setCppWidth(nodep);
}
}
}
@@ -117,7 +131,7 @@ private:
AstNode* cleanp = new AstAnd (nodep->fileline(),
new AstConst (nodep->fileline(), mask),
nodep);
setCppWidth (cleanp, cppWidth(nodep), nodep->widthMin());
cleanp->dtypeFrom(nodep); // Otherwise the AND normally picks LHS
relinkHandle.relink(cleanp);
}
void insureClean(AstNode* nodep) {