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hook for skipping chains + optimize common case of all-assignments-managed

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This commit is contained in:
Vern Paxson 2024-05-10 10:56:03 -07:00
parent 9d886f61cc
commit c0045c4643
3 changed files with 28 additions and 4 deletions
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14
src/script_opt/ZAM/Expr.cc
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@ -242,7 +242,7 @@ const ZAMStmt ZAMCompiler::CompileRecFieldUpdates(const RecordFieldUpdates* e) {
std::set<TypeTag> field_tags;
bool is_managed = false;
size_t num_managed = 0;
for ( auto i : rhs_map ) {
auto rt = rhs->GetType()->AsRecordType();
@ -251,7 +251,7 @@ const ZAMStmt ZAMCompiler::CompileRecFieldUpdates(const RecordFieldUpdates* e) {
if ( ZVal::IsManagedType(rt_ft_i) ) {
aux->is_managed.push_back(true);
is_managed = true;
++num_managed;
}
else
// This will only be needed if is_managed winds up being true,
@ -269,8 +269,14 @@ const ZAMStmt ZAMCompiler::CompileRecFieldUpdates(const RecordFieldUpdates* e) {
ZOp op;
if ( e->Tag() == EXPR_REC_ASSIGN_FIELDS )
op = is_managed ? OP_REC_ASSIGN_FIELDS_MANAGED_VV : OP_REC_ASSIGN_FIELDS_VV;
if ( e->Tag() == EXPR_REC_ASSIGN_FIELDS ) {
if ( num_managed == rhs_map.size() )
op = OP_REC_ASSIGN_FIELDS_ALL_MANAGED_VV;
else if ( num_managed > 0 )
op = OP_REC_ASSIGN_FIELDS_MANAGED_VV;
else
op = OP_REC_ASSIGN_FIELDS_VV;
}
else if ( homogeneous ) {
if ( field_tags.count(TYPE_DOUBLE) > 0 )