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Differential D147281 Diff 510321 clang/lib/AST/ASTContext.cpp

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clang/lib/AST/ASTContext.cpp

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Show First 20 Lines • Show All 6,613 Lines • ▼ Show 20 Lines if (const auto *FuncX = dyn_cast<FunctionDecl>(X)) {
// not the same entity if they are constrained. // not the same entity if they are constrained.
if ((FuncX->isMemberLikeConstrainedFriend() || if ((FuncX->isMemberLikeConstrainedFriend() ||
FuncY->isMemberLikeConstrainedFriend()) && FuncY->isMemberLikeConstrainedFriend()) &&
!FuncX->getLexicalDeclContext()->Equals( !FuncX->getLexicalDeclContext()->Equals(
FuncY->getLexicalDeclContext())) { FuncY->getLexicalDeclContext())) {
return false; return false;
} }
// The trailing require clause of instantiated function may change during if (!isSameConstraintExpr(FuncX->getTrailingRequiresClause(),
// the semantic analysis. Trying to get the primary template function (if FuncY->getTrailingRequiresClause()))
// exists) to compare the primary trailing require clause.
auto TryToGetPrimaryTemplatedFunction =
[](const FunctionDecl *FD) -> const FunctionDecl * {
switch (FD->getTemplatedKind()) {
case FunctionDecl::TK_DependentNonTemplate:
return FD->getInstantiatedFromDecl();
case FunctionDecl::TK_FunctionTemplate:
return FD->getDescribedFunctionTemplate()->getTemplatedDecl();
case FunctionDecl::TK_MemberSpecialization:
return FD->getInstantiatedFromMemberFunction();
case FunctionDecl::TK_FunctionTemplateSpecialization:
return FD->getPrimaryTemplate()->getTemplatedDecl();
default:
return FD;
}
};
const FunctionDecl *PrimaryX = TryToGetPrimaryTemplatedFunction(FuncX);
const FunctionDecl *PrimaryY = TryToGetPrimaryTemplatedFunction(FuncY);
if (!isSameConstraintExpr(PrimaryX->getTrailingRequiresClause(),
PrimaryY->getTrailingRequiresClause()))
return false; return false;
auto GetTypeAsWritten = [](const FunctionDecl *FD) { auto GetTypeAsWritten = [](const FunctionDecl *FD) {
// Map to the first declaration that we've already merged into this one. // Map to the first declaration that we've already merged into this one.
// The TSI of redeclarations might not match (due to calling conventions // The TSI of redeclarations might not match (due to calling conventions
// being inherited onto the type but not the TSI), but the TSI type of // being inherited onto the type but not the TSI), but the TSI type of
// the first declaration of the function should match across modules. // the first declaration of the function should match across modules.
FD = FD->getCanonicalDecl(); FD = FD->getCanonicalDecl();
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