luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-10-06 10:03:44 +02:00
Code Issues Packages Projects Releases Wiki Activity

Internals: Parse fork and delays, but then still report unsupported.

Browse Source
This commit is contained in:
Wilson Snyder
2020-04-22 21:31:40 -04:00
parent c96a43b452
commit 7176aee852
17 changed files with 296 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3LinkJump.cpp
+16 -14
View File
@@ -38,7 +38,7 @@
class LinkJumpVisitor : public AstNVisitor {
private:
// TYPES
typedef std::vector<AstBegin*> BeginStack;
typedef std::vector<AstNodeBlock*> BlockStack;
// STATE
AstNodeModule* m_modp; // Current module
@@ -46,7 +46,7 @@ private:
AstWhile* m_loopp; // Current loop
bool m_loopInc; // In loop increment
int m_modRepeatNum; // Repeat counter
BeginStack m_beginStack; // All begin blocks above current node
BlockStack m_blockStack; // All begin blocks above current node
// METHODS
VL_DEBUG_FUNC; // Declare debug()
@@ -58,8 +58,8 @@ private:
AstNode* underp = NULL;
bool under_and_next = true;
if (VN_IS(nodep, Begin)) {
underp = VN_CAST(nodep, Begin)->stmtsp();
if (VN_IS(nodep, NodeBlock)) {
underp = VN_CAST(nodep, NodeBlock)->stmtsp();
} else if (VN_IS(nodep, NodeFTask)) {
underp = VN_CAST(nodep, NodeFTask)->stmtsp();
} else if (VN_IS(nodep, While)) {
@@ -123,11 +123,11 @@ private:
iterateChildren(nodep);
m_ftaskp = NULL;
}
virtual void visit(AstBegin* nodep) VL_OVERRIDE {
virtual void visit(AstNodeBlock* nodep) VL_OVERRIDE {
UINFO(8, " " << nodep << endl);
m_beginStack.push_back(nodep);
m_blockStack.push_back(nodep);
iterateChildren(nodep);
m_beginStack.pop_back();
m_blockStack.pop_back();
}
virtual void visit(AstRepeat* nodep) VL_OVERRIDE {
// So later optimizations don't need to deal with them,
@@ -223,22 +223,24 @@ private:
virtual void visit(AstDisable* nodep) VL_OVERRIDE {
UINFO(8, " DISABLE " << nodep << endl);
iterateChildren(nodep);
AstBegin* beginp = NULL;
for (BeginStack::reverse_iterator it = m_beginStack.rbegin(); it != m_beginStack.rend();
AstNodeBlock* blockp = NULL;
for (BlockStack::reverse_iterator it = m_blockStack.rbegin(); it != m_blockStack.rend();
++it) {
UINFO(9, " UNDERBLK " << *it << endl);
if ((*it)->name() == nodep->name()) {
beginp = *it;
blockp = *it;
break;
}
}
// if (debug() >= 9) { UINFO(0, "\n"); beginp->dumpTree(cout, " labeli: "); }
if (!beginp) {
// if (debug() >= 9) { UINFO(0, "\n"); blockp->dumpTree(cout, " labeli: "); }
if (!blockp) {
nodep->v3error("disable isn't underneath a begin with name: " << nodep->prettyNameQ());
} else {
// Jump to the end of the named begin
} else if (AstBegin* beginp = VN_CAST(blockp, Begin)) {
// Jump to the end of the named block
AstJumpLabel* labelp = findAddLabel(beginp, false);
nodep->addNextHere(new AstJumpGo(nodep->fileline(), labelp));
} else {
nodep->v3error("Unsupported: disable fork");
}
nodep->unlinkFrBack();
VL_DO_DANGLING(pushDeletep(nodep), nodep);