archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-20 19:14:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8031755: Type speculation should be used to optimize explicit null checks

Browse source 
Feed profiling data about reference nullness to type speculation.

Reviewed-by: kvn, iveresov
This commit is contained in:
Roland Westrelin 2014-03-31 09:08:53 +02:00
parent f5d6f0ceb8
commit fa3b0a8f47
16 changed files with 683 additions and 418 deletions
Download patch file Download diff file Expand all files Collapse all files

8
hotspot/src/share/vm/ci/ciMethod.hpp
View file

@ -234,10 +234,10 @@ class ciMethod : public ciMetadata {
ciCallProfile call_profile_at_bci(int bci);
int interpreter_call_site_count(int bci);
// Does type profiling provide a useful type at this point?
ciKlass* argument_profiled_type(int bci, int i);
ciKlass* parameter_profiled_type(int i);
ciKlass* return_profiled_type(int bci);
// Does type profiling provide any useful information at this point?
bool argument_profiled_type(int bci, int i, ciKlass*& type, bool& maybe_null);
bool parameter_profiled_type(int i, ciKlass*& type, bool& maybe_null);
bool return_profiled_type(int bci, ciKlass*& type, bool& maybe_null);
ciField* get_field_at_bci( int bci, bool &will_link);
ciMethod* get_method_at_bci(int bci, bool &will_link, ciSignature* *declared_signature);