github/verilator
1
0
Fork 1
mirror of https://github.com/verilator/verilator.git synced 2025-04-28 11:36:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

Internals: Cleanup uses of accept in V3Width. No functional change.

Browse Source
This commit is contained in:
Wilson Snyder 2016-11-07 19:14:45 -05:00
parent 1ae22e1365
commit ad39931e87
6 changed files with 32 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/V3Ast.cpp
View File

@ -816,7 +816,7 @@ void AstNode::iterateAndNextConst(AstNVisitor& v, AstNUser* vup) {
}
}
AstNode* AstNode::acceptSubtreeReturnEdits(AstNVisitor& v, AstNUser* vup) {
AstNode* AstNode::iterateSubtreeReturnEdits(AstNVisitor& v, AstNUser* vup) {
// Some visitors perform tree edits (such as V3Const), and may even
// replace/delete the exact nodep that the visitor is called with. If
// this happens, the parent will lose the handle to the node that was

2
src/V3Ast.h
View File

@ -1272,7 +1272,7 @@ public:
void iterateChildren(AstNVisitor& v, AstNUser* vup=NULL); // Excludes following this->next
void iterateChildrenBackwards(AstNVisitor& v, AstNUser* vup=NULL); // Excludes following this->next
void iterateChildrenConst(AstNVisitor& v, AstNUser* vup=NULL); // Excludes following this->next
AstNode* acceptSubtreeReturnEdits(AstNVisitor& v, AstNUser* vup=NULL); // Return edited nodep; see comments in V3Ast.cpp
AstNode* iterateSubtreeReturnEdits(AstNVisitor& v, AstNUser* vup=NULL); // Return edited nodep; see comments in V3Ast.cpp
// CONVERSION
#include "V3Ast__gen_interface.h" // From ./astgen

2
src/V3Const.cpp
View File

@ -2329,7 +2329,7 @@ public:
virtual ~ConstVisitor() {}
AstNode* mainAcceptEdit(AstNode* nodep) {
// Operate starting at a random place
return nodep->acceptSubtreeReturnEdits(*this);
return nodep->iterateSubtreeReturnEdits(*this);
}
};

52
src/V3Width.cpp
View File

@ -64,7 +64,7 @@
// same value on each nextp().
//*************************************************************************
// See notes in internal.txt about misuse of iterateAndNext and use of
// acceptSubtreeReturnEdits.
// iterateSubtreeReturnEdits.
//*************************************************************************
#include "config_build.h"
@ -171,6 +171,8 @@ public:
//######################################################################
#define accept in_WidthVisitor_use_AstNode_iterate_instead_of_AstNode_accept
class WidthVisitor : public AstNVisitor {
private:
// TYPES
@ -990,7 +992,7 @@ private:
AstNode* newp = new AstCastSize(nodep->fileline(), nodep->lhsp()->unlinkFrBack(), constp);
nodep->replaceWith(newp);
pushDeletep(nodep); VL_DANGLING(nodep);
newp->accept(*this,vup);
newp->iterate(*this,vup);
} else {
nodep->v3error("Unsupported: Cast to "<<nodep->dtp()->prettyTypeName());
nodep->replaceWith(nodep->lhsp()->unlinkFrBack());
@ -1405,7 +1407,7 @@ private:
AstNode* newp = new AstMethodSel(nodep->fileline(), nodep->fromp()->unlinkFrBack(), nodep->name(), NULL);
nodep->replaceWith(newp);
pushDeletep(nodep); VL_DANGLING(nodep);
newp->accept(*this,vup);
newp->iterate(*this,vup);
return;
}
else {
@ -1439,9 +1441,9 @@ private:
UINFO(5," METHODSEL "<<nodep<<endl);
if (debug()>=9) nodep->dumpTree("-mts-in: ");
// Should check types the method requires, but at present we don't do much
nodep->fromp()->accept(*this,WidthVP(SELF,BOTH).p());
nodep->fromp()->iterate(*this,WidthVP(SELF,BOTH).p());
for (AstArg* argp = nodep->pinsp()->castArg(); argp; argp = argp->nextp()->castArg()) {
if (argp->exprp()) argp->exprp()->accept(*this,WidthVP(SELF,BOTH).p());
if (argp->exprp()) argp->exprp()->iterate(*this,WidthVP(SELF,BOTH).p());
}
// Find the fromp dtype - should be a class
if (!nodep->fromp() || !nodep->fromp()->dtypep()) nodep->v3fatalSrc("Unsized expression");
@ -1636,7 +1638,7 @@ private:
// Determine initial values
vdtypep = memp;
patp->dtypep(memp);
patp->accept(*this,WidthVP(memp,BOTH).p()); // See visit(AstPatMember*
patp->iterate(*this,WidthVP(memp,BOTH).p()); // See visit(AstPatMember*
// Convert to concat for now
AstNode* valuep = patp->lhssp()->unlinkFrBack();
@ -1691,7 +1693,7 @@ private:
// Don't want the RHS an array
patp->dtypep(vdtypep);
// Determine values - might be another InitArray
patp->accept(*this,WidthVP(patp->dtypep(),BOTH).p()); // See visit(AstPatMember*
patp->iterate(*this,WidthVP(patp->dtypep(),BOTH).p()); // See visit(AstPatMember*
// Convert to InitArray or constify immediately
AstNode* valuep = patp->lhssp()->unlinkFrBack();
if (valuep->castConst()) {
@ -1759,7 +1761,7 @@ private:
// Don't want the RHS an array
patp->dtypep(vdtypep);
// Determine values - might be another InitArray
patp->accept(*this,WidthVP(patp->dtypep(),BOTH).p());
patp->iterate(*this,WidthVP(patp->dtypep(),BOTH).p());
// Convert to InitArray or constify immediately
AstNode* valuep = patp->lhssp()->unlinkFrBack();
if (valuep->castConst()) {
@ -2309,7 +2311,7 @@ private:
pinp = newp;
}
// AstPattern requires assignments to pass datatype on PRELIM
pinp->accept(*this,WidthVP(portp->dtypep(),PRELIM).p()); VL_DANGLING(pinp);
pinp->iterate(*this,WidthVP(portp->dtypep(),PRELIM).p()); VL_DANGLING(pinp);
} else if (accept_mode==1) {
// Change data types based on above accept completion
if (portp->isDouble()) {
@ -2317,7 +2319,7 @@ private:
}
} else if (accept_mode==2) {
// Do PRELIM again, because above accept may have exited early due to node replacement
pinp->accept(*this,WidthVP(portp->dtypep(),PRELIM).p());
pinp->iterate(*this,WidthVP(portp->dtypep(),PRELIM).p());
if ((portp->isOutput() || portp->isInout())
&& pinp->width() != portp->width()) {
pinp->v3error("Unsupported: Function output argument '"<<portp->prettyName()<<"'"
@ -2328,7 +2330,7 @@ private:
// (get an ASSIGN with EXTEND on the lhs instead of rhs)
}
if (!portp->basicp() || portp->basicp()->isOpaque()) {
pinp->accept(*this,WidthVP(portp->dtypep(),FINAL).p());
pinp->iterate(*this,WidthVP(portp->dtypep(),FINAL).p());
} else {
iterateCheckAssign(nodep,"Function Argument",pinp,FINAL,portp->dtypep());
}
@ -2876,7 +2878,7 @@ private:
void iterateCheckFileDesc (AstNode* nodep, AstNode* underp, Stage stage) {
if (stage != BOTH) nodep->v3fatalSrc("Bad call");
// underp may change as a result of replacement
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
AstNodeDType* expDTypep = underp->findUInt32DType();
underp = iterateCheck(nodep,"file_descriptor",underp,SELF,FINAL,expDTypep,EXTEND_EXP);
if (underp) {} // cppcheck
@ -2889,7 +2891,7 @@ private:
// otherwise self-determined was correct
// underp may change as a result of replacement
if (stage & PRELIM) {
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
}
if (stage & FINAL) {
AstNodeDType* expDTypep = nodep->findDoubleDType();
@ -2899,7 +2901,7 @@ private:
}
void iterateCheckString (AstNode* nodep, const char* side, AstNode* underp, Stage stage) {
if (stage & PRELIM) {
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
}
if (stage & FINAL) {
AstNodeDType* expDTypep = nodep->findStringDType();
@ -2914,7 +2916,7 @@ private:
if (determ != SELF) nodep->v3fatalSrc("Bad call");
if (stage != FINAL && stage != BOTH) nodep->v3fatalSrc("Bad call");
// underp may change as a result of replacement
if (stage & PRELIM) underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
if (stage & PRELIM) underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,PRELIM).p());
underp = checkCvtUS(underp);
AstNodeDType* expDTypep = underp->dtypep();
underp = iterateCheck(nodep,side,underp,SELF,FINAL,expDTypep,EXTEND_EXP);
@ -2939,7 +2941,7 @@ private:
// stage is always BOTH so not passed as argument
// underp may change as a result of replacement
if (!underp) underp->v3fatalSrc("Node has no type");
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,BOTH).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,BOTH).p());
if (!underp || !underp->dtypep()) underp->v3fatalSrc("Node has no type"); // Perhaps forgot to do a prelim visit on it?
//
// For DOUBLE under a logical op, add implied test against zero, never a warning
@ -2983,18 +2985,18 @@ private:
if (stage != FINAL) nodep->v3fatalSrc("Bad state to iterateCheck");
if (!underp || !underp->dtypep()) underp->v3fatalSrc("Node has no type"); // Perhaps forgot to do a prelim visit on it?
if (expDTypep == underp->dtypep()) { // Perfect
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else if (expDTypep->isDouble() && underp->isDouble()) { // Also good
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else if (expDTypep->isDouble() && !underp->isDouble()) {
underp = spliceCvtD(underp);
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else if (!expDTypep->isDouble() && underp->isDouble()) {
underp = spliceCvtS(underp, true); // Round RHS
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else if (expDTypep->isString() && !underp->dtypep()->isString()) {
underp = spliceCvtString(underp);
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else {
AstBasicDType* expBasicp = expDTypep->basicp();
AstBasicDType* underBasicp = underp->dtypep()->basicp();
@ -3004,7 +3006,7 @@ private:
// is e.g. an ADD, the ADD will auto-adjust to the proper data type
// or if another operation e.g. ATOI will not.
if (determ == SELF) {
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(SELF,FINAL).p());
} else if (determ == ASSIGN) {
// IEEE: Signedness is solely determined by the RHS (underp), not by the LHS (expDTypep)
if (underp->isSigned() != subDTypep->isSigned()
@ -3014,9 +3016,9 @@ private:
AstNumeric::fromBool(underp->isSigned()));
UINFO(9,"Assignment of opposite-signed RHS to LHS: "<<nodep<<endl);
}
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(subDTypep,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(subDTypep,FINAL).p());
} else {
underp = underp->acceptSubtreeReturnEdits(*this,WidthVP(subDTypep,FINAL).p());
underp = underp->iterateSubtreeReturnEdits(*this,WidthVP(subDTypep,FINAL).p());
}
// Note the check uses the expected size, not the child's subDTypep as we want the
// child node's width to end up correct for the assignment (etc)
@ -3547,7 +3549,7 @@ public:
m_dtTables = 0;
}
AstNode* mainAcceptEdit(AstNode* nodep) {
return nodep->acceptSubtreeReturnEdits(*this, WidthVP(SELF,BOTH).p());
return nodep->iterateSubtreeReturnEdits(*this, WidthVP(SELF,BOTH).p());
}
virtual ~WidthVisitor() {}
};

2
src/V3WidthCommit.h
View File

@ -57,7 +57,7 @@ public:
WidthRemoveVisitor() {}
virtual ~WidthRemoveVisitor() {}
AstNode* mainAcceptEdit(AstNode* nodep) {
return nodep->acceptSubtreeReturnEdits(*this);
return nodep->iterateSubtreeReturnEdits(*this);
}
};

2
src/V3WidthSel.cpp
View File

@ -462,7 +462,7 @@ public:
// CONSTUCTORS
WidthSelVisitor() {}
AstNode* mainAcceptEdit(AstNode* nodep) {
return nodep->acceptSubtreeReturnEdits(*this);
return nodep->iterateSubtreeReturnEdits(*this);
}
virtual ~WidthSelVisitor() {}
};