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optionally hash original, not extended, form of records for profiling

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profile types associated with global initializations
incorporate type name, if present, into type hash
This commit is contained in:
Vern Paxson 2021-04-01 20:20:12 -07:00
parent 0f18a01bf7
commit 0b45ff2179
3 changed files with 99 additions and 18 deletions
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19
src/script_opt/ProfileFunc.h
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@ -84,13 +84,13 @@ class ProfileFunc : public TraversalCallback {
public:
// Constructor used for the usual case of profiling a script
// function and one of its bodies.
ProfileFunc(const Func* func, const StmtPtr& body);
ProfileFunc(const Func* func, const StmtPtr& body, bool abs_rec_fields);
// Constructor for profiling an AST expression. This exists
// to support (1) profiling lambda expressions, and (2) traversing
// attribute expressions (such as &default=expr) to discover what
// components they include.
ProfileFunc(const Expr* func);
ProfileFunc(const Expr* func, bool abs_rec_fields);
// See the comments for the associated member variables for each
// of these accessors.
@ -263,6 +263,10 @@ protected:
// whether a given body contains any.
int num_when_stmts = 0;
// Whether we should treat record field accesses as absolute
// (integer offset) or relative (name-based).
bool abs_rec_fields;
// Whether we're separately processing a "when" condition to
// mine out its script calls.
bool in_when = false;
@ -280,8 +284,11 @@ public:
// Updates entries in "funcs" to include profiles. If pred is
// non-nil, then it is called for each profile to see whether it's
// compilable, and, if not, the FuncInfo is marked as ShouldSkip().
// "full_record_hashes" controls whether the hashes for extended
// records covers their final, full form, or should only their
// original fields.
ProfileFuncs(std::vector<FuncInfo>& funcs,
is_compilable_pred pred = nullptr);
is_compilable_pred pred, bool full_record_hashes);
// The following accessors provide a global profile across all of
// the (non-skipped) functions in "funcs". See the comments for
@ -326,6 +333,8 @@ public:
p_hash_type HashType(const TypePtr& t) { return HashType(t.get()); }
p_hash_type HashType(const Type* t);
p_hash_type HashAttrs(const AttributesPtr& attrs);
protected:
// Incorporate the given function profile into the global profile.
void MergeInProfile(ProfileFunc* pf);
@ -414,6 +423,10 @@ protected:
// profile. These can arise for example due to lambdas or
// record attributes.
std::vector<const Expr*> pending_exprs;
// Whether the hashes for extended records should cover their final,
// full form, or only their original fields.
bool full_record_hashes;
};