Mercurial > hg > graal-jvmci-8
diff src/share/vm/c1/c1_ValueMap.hpp @ 8860:46f6f063b272
7153771: array bound check elimination for c1
Summary: when possible optimize out array bound checks, inserting predicates when needed.
Reviewed-by: never, kvn, twisti
Contributed-by: thomaswue <thomas.wuerthinger@oracle.com>
author | roland |
---|---|
date | Thu, 21 Mar 2013 09:27:54 +0100 |
parents | b9a9ed0f8eeb |
children | acadb114c818 |
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--- a/src/share/vm/c1/c1_ValueMap.hpp Wed Mar 20 17:04:45 2013 -0700 +++ b/src/share/vm/c1/c1_ValueMap.hpp Thu Mar 21 09:27:54 2013 +0100 @@ -206,6 +206,8 @@ void do_ProfileInvoke (ProfileInvoke* x) { /* nothing to do */ }; void do_RuntimeCall (RuntimeCall* x) { /* nothing to do */ }; void do_MemBar (MemBar* x) { /* nothing to do */ }; + void do_RangeCheckPredicate(RangeCheckPredicate* x) { /* nothing to do */ }; + void do_Assert (Assert* x) { /* nothing to do */ }; }; @@ -225,15 +227,22 @@ class GlobalValueNumbering: public ValueNumberingVisitor { private: + Compilation* _compilation; // compilation data ValueMap* _current_map; // value map of current block ValueMapArray _value_maps; // list of value maps for all blocks + ValueSet _processed_values; // marker for instructions that were already processed + bool _has_substitutions; // set to true when substitutions must be resolved public: // accessors + Compilation* compilation() const { return _compilation; } ValueMap* current_map() { return _current_map; } ValueMap* value_map_of(BlockBegin* block) { return _value_maps.at(block->linear_scan_number()); } void set_value_map_of(BlockBegin* block, ValueMap* map) { assert(value_map_of(block) == NULL, ""); _value_maps.at_put(block->linear_scan_number(), map); } + bool is_processed(Value v) { return _processed_values.contains(v); } + void set_processed(Value v) { _processed_values.put(v); } + // implementation for abstract methods of ValueNumberingVisitor void kill_memory() { current_map()->kill_memory(); } void kill_field(ciField* field, bool all_offsets) { current_map()->kill_field(field, all_offsets); } @@ -241,6 +250,7 @@ // main entry point that performs global value numbering GlobalValueNumbering(IR* ir); + void substitute(Instruction* instr); // substitute instruction if it is contained in current value map }; #endif // SHARE_VM_C1_C1_VALUEMAP_HPP