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7153771: array bound check elimination for c1

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When possible optimize out array bound checks, inserting predicates when needed.

Reviewed-by: never, kvn, twisti
This commit is contained in:
Thomas Wuerthinger 2013-03-21 09:27:54 +01:00 • committed by Roland Westrelin
parent 2f4ecb86a2
commit 06ef4cddf7
40 changed files with 2861 additions and 153 deletions
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7
hotspot/src/share/vm/c1/c1_IR.hpp
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@ -254,6 +254,7 @@ class CodeEmitInfo: public CompilationResourceObj {
OopMap* _oop_map;
ValueStack* _stack; // used by deoptimization (contains also monitors
bool _is_method_handle_invoke; // true if the associated call site is a MethodHandle call site.
bool _deoptimize_on_exception;
FrameMap* frame_map() const { return scope()->compilation()->frame_map(); }
Compilation* compilation() const { return scope()->compilation(); }
@ -261,7 +262,7 @@ class CodeEmitInfo: public CompilationResourceObj {
public:
// use scope from ValueStack
CodeEmitInfo(ValueStack* stack, XHandlers* exception_handlers);
CodeEmitInfo(ValueStack* stack, XHandlers* exception_handlers, bool deoptimize_on_exception = false);
// make a copy
CodeEmitInfo(CodeEmitInfo* info, ValueStack* stack = NULL);
@ -272,6 +273,7 @@ class CodeEmitInfo: public CompilationResourceObj {
IRScope* scope() const { return _scope; }
XHandlers* exception_handlers() const { return _exception_handlers; }
ValueStack* stack() const { return _stack; }
bool deoptimize_on_exception() const { return _deoptimize_on_exception; }
void add_register_oop(LIR_Opr opr);
void record_debug_info(DebugInformationRecorder* recorder, int pc_offset);
@ -309,7 +311,8 @@ class IR: public CompilationResourceObj {
int max_stack() const { return top_scope()->max_stack(); } // expensive
// ir manipulation
void optimize();
void optimize_blocks();
void eliminate_null_checks();
void compute_predecessors();
void split_critical_edges();
void compute_code();