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[TMP] Try inlining the getAttrField function

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See what’s making things slow
This commit is contained in:
regnat 2021-06-02 16:56:21 +02:00
parent b012852cb2
commit 2021b1d8d1
1 changed files with 28 additions and 1 deletions
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29
src/libexpr/eval.cc
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@ -1154,7 +1154,34 @@ void ExprSelect::eval(EvalState & state, Env & env, Value & v)
selector.push_back(getName(i, state, env));
try {
state.getAttrField(vTmp, selector, pos, v);
Pos * pos2 = 0;
Value * vAttrs = &vTmp;
try {
for (auto & name : selector) {
nrLookups++;
Bindings::iterator j;
state.forceValue(*vAttrs, pos);
if (vAttrs->type() != nAttrs ||
(j = vAttrs->attrs->find(name)) == vAttrs->attrs->end()) {
throw MissingField("attribute '%s' missing", name);
}
vAttrs = j->value;
pos2 = j->pos;
if (state.countCalls && pos2) state.attrSelects[*pos2]++;
}
state.forceValue(*vAttrs, ( pos2 != NULL ? *pos2 : pos ) );
} catch (Error & e) {
if (pos2 && pos2->file != state.sDerivationNix) {
vector<string> strSelector;
addErrorTrace(e, *pos2, "while evaluating the attribute '%1%'", concatStringsSep(".", selector));
}
throw;
}
v = *vAttrs;
} catch (MissingField & field) {
if (def) {
def->eval(state, env, v);