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#ifndef SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
#define SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
#include "gc/shared/c2/barrierSetC2.hpp"
- #include "gc/shenandoah/c2/shenandoahSupport.hpp"
#include "utilities/growableArray.hpp"
! class ShenandoahBarrierSetC2State : public ArenaObj {
! private:
! GrowableArray<ShenandoahLoadReferenceBarrierNode*>* _load_reference_barriers;
public:
! ShenandoahBarrierSetC2State(Arena* comp_arena);
! int load_reference_barriers_count() const;
! ShenandoahLoadReferenceBarrierNode* load_reference_barrier(int idx) const;
! void add_load_reference_barrier(ShenandoahLoadReferenceBarrierNode* n);
! void remove_load_reference_barrier(ShenandoahLoadReferenceBarrierNode * n);
! };
class ShenandoahBarrierSetC2 : public BarrierSetC2 {
- private:
- void shenandoah_eliminate_wb_pre(Node* call, PhaseIterGVN* igvn) const;
-
- bool satb_can_remove_pre_barrier(GraphKit* kit, PhaseValues* phase, Node* adr,
- BasicType bt, uint adr_idx) const;
- void satb_write_barrier_pre(GraphKit* kit, bool do_load,
- Node* obj,
- Node* adr,
- uint alias_idx,
- Node* val,
- const TypeOopPtr* val_type,
- Node* pre_val,
- BasicType bt) const;
-
- void shenandoah_write_barrier_pre(GraphKit* kit,
- bool do_load,
- Node* obj,
- Node* adr,
- uint alias_idx,
- Node* val,
- const TypeOopPtr* val_type,
- Node* pre_val,
- BasicType bt) const;
-
- void post_barrier(GraphKit* kit,
- Node* ctl,
- Node* store,
- Node* obj,
- Node* adr,
- uint adr_idx,
- Node* val,
- BasicType bt,
- bool use_precise) const;
-
- void insert_pre_barrier(GraphKit* kit, Node* base_oop, Node* offset,
- Node* pre_val, bool need_mem_bar) const;
static bool clone_needs_barrier(Node* src, PhaseGVN& gvn);
protected:
virtual Node* load_at_resolved(C2Access& access, const Type* val_type) const;
*/
#ifndef SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
#define SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
+ #include "shenandoahBarrierSetC2.hpp"
#include "gc/shared/c2/barrierSetC2.hpp"
#include "utilities/growableArray.hpp"
! static const uint8_t ShenandoahBarrierStrong = 1 << 0;
! static const uint8_t ShenandoahBarrierWeak = 1 << 1;
! static const uint8_t ShenandoahBarrierPhantom = 1 << 2;
+ static const uint8_t ShenandoahBarrierNative = 1 << 3;
+ static const uint8_t ShenandoahBarrierElided = 1 << 4;
+ static const uint8_t ShenandoahBarrierSATB = 1 << 5;
+ static const uint8_t ShenandoahBarrierCardMark = 1 << 6;
+ static const uint8_t ShenandoahBarrierCardMarkNotNull = 1 << 7;
+
+ class ShenandoahBarrierStubC2;
+
+ class ShenandoahBarrierSetC2State : public BarrierSetC2State {
+ GrowableArray<ShenandoahBarrierStubC2*>* _stubs;
+ int _stubs_start_offset;
public:
! explicit ShenandoahBarrierSetC2State(Arena* comp_arena);
! bool needs_liveness_data(const MachNode* mach) const override;
! bool needs_livein_data() const override;
!
! GrowableArray<ShenandoahBarrierStubC2*>* stubs() {
! return _stubs;
+ }
+
+ void set_stubs_start_offset(int offset) {
+ _stubs_start_offset = offset;
+ }
+
+ int stubs_start_offset() {
+ return _stubs_start_offset;
+ }};
class ShenandoahBarrierSetC2 : public BarrierSetC2 {
static bool clone_needs_barrier(Node* src, PhaseGVN& gvn);
protected:
virtual Node* load_at_resolved(C2Access& access, const Type* val_type) const;
virtual Node* atomic_xchg_at_resolved(C2AtomicParseAccess& access, Node* new_val, const Type* val_type) const;
public:
static ShenandoahBarrierSetC2* bsc2();
- static bool is_shenandoah_wb_pre_call(Node* call);
static bool is_shenandoah_clone_call(Node* call);
- static bool is_shenandoah_lrb_call(Node* call);
- static bool is_shenandoah_marking_if(PhaseValues* phase, Node* n);
- static bool is_shenandoah_state_load(Node* n);
- static bool has_only_shenandoah_wb_pre_uses(Node* n);
ShenandoahBarrierSetC2State* state() const;
- static const TypeFunc* write_barrier_pre_Type();
static const TypeFunc* clone_barrier_Type();
- static const TypeFunc* load_reference_barrier_Type();
- virtual bool has_load_barrier_nodes() const { return true; }
// This is the entry-point for the backend to perform accesses through the Access API.
virtual void clone_at_expansion(PhaseMacroExpand* phase, ArrayCopyNode* ac) const;
// These are general helper methods used by C2
virtual bool array_copy_requires_gc_barriers(bool tightly_coupled_alloc, BasicType type, bool is_clone, bool is_clone_instance, ArrayCopyPhase phase) const;
// Support for GC barriers emitted during parsing
- virtual bool is_gc_pre_barrier_node(Node* node) const;
virtual bool is_gc_barrier_node(Node* node) const;
- virtual Node* step_over_gc_barrier(Node* c) const;
virtual bool expand_barriers(Compile* C, PhaseIterGVN& igvn) const;
- virtual bool optimize_loops(PhaseIdealLoop* phase, LoopOptsMode mode, VectorSet& visited, Node_Stack& nstack, Node_List& worklist) const;
- virtual bool strip_mined_loops_expanded(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand; }
- virtual bool is_gc_specific_loop_opts_pass(LoopOptsMode mode) const { return mode == LoopOptsShenandoahExpand; }
// Support for macro expanded GC barriers
- virtual void register_potential_barrier_node(Node* node) const;
- virtual void unregister_potential_barrier_node(Node* node) const;
virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
! virtual void enqueue_useful_gc_barrier(PhaseIterGVN* igvn, Node* node) const;
- virtual void eliminate_useless_gc_barriers(Unique_Node_List &useful, Compile* C) const;
// Allow barrier sets to have shared state that is preserved across a compilation unit.
// This could for example comprise macro nodes to be expanded during macro expansion.
virtual void* create_barrier_state(Arena* comp_arena) const;
- // If the BarrierSetC2 state has kept macro nodes in its compilation unit state to be
- // expanded later, then now is the time to do so.
- virtual bool expand_macro_nodes(PhaseMacroExpand* macro) const;
#ifdef ASSERT
virtual void verify_gc_barriers(Compile* compile, CompilePhase phase) const;
#endif
! virtual Node* ideal_node(PhaseGVN* phase, Node* n, bool can_reshape) const;
! virtual bool final_graph_reshaping(Compile* compile, Node* n, uint opcode, Unique_Node_List& dead_nodes) const;
! virtual bool escape_add_to_con_graph(ConnectionGraph* conn_graph, PhaseGVN* gvn, Unique_Node_List* delayed_worklist, Node* n, uint opcode) const;
! virtual bool escape_add_final_edges(ConnectionGraph* conn_graph, PhaseGVN* gvn, Node* n, uint opcode) const;
! virtual bool escape_has_out_with_unsafe_object(Node* n) const;
! virtual bool matcher_find_shared_post_visit(Matcher* matcher, Node* n, uint opcode) const;
! virtual bool matcher_is_store_load_barrier(Node* x, uint xop) const;
};
#endif // SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
virtual Node* atomic_xchg_at_resolved(C2AtomicParseAccess& access, Node* new_val, const Type* val_type) const;
public:
static ShenandoahBarrierSetC2* bsc2();
static bool is_shenandoah_clone_call(Node* call);
ShenandoahBarrierSetC2State* state() const;
static const TypeFunc* clone_barrier_Type();
// This is the entry-point for the backend to perform accesses through the Access API.
virtual void clone_at_expansion(PhaseMacroExpand* phase, ArrayCopyNode* ac) const;
// These are general helper methods used by C2
virtual bool array_copy_requires_gc_barriers(bool tightly_coupled_alloc, BasicType type, bool is_clone, bool is_clone_instance, ArrayCopyPhase phase) const;
// Support for GC barriers emitted during parsing
virtual bool is_gc_barrier_node(Node* node) const;
virtual bool expand_barriers(Compile* C, PhaseIterGVN& igvn) const;
// Support for macro expanded GC barriers
virtual void eliminate_gc_barrier(PhaseMacroExpand* macro, Node* node) const;
! virtual void eliminate_gc_barrier_data(Node* node) const;
// Allow barrier sets to have shared state that is preserved across a compilation unit.
// This could for example comprise macro nodes to be expanded during macro expansion.
virtual void* create_barrier_state(Arena* comp_arena) const;
#ifdef ASSERT
virtual void verify_gc_barriers(Compile* compile, CompilePhase phase) const;
#endif
! int estimate_stub_size() const /* override */;
! void emit_stubs(CodeBuffer& cb) const /* override */;
+ void late_barrier_analysis() const /* override*/ {
+ compute_liveness_at_stubs();
+ }
+
+ };
+
+ class ShenandoahBarrierStubC2 : public BarrierStubC2 {
+ protected:
+ explicit ShenandoahBarrierStubC2(const MachNode* node) : BarrierStubC2(node) {}
+ void register_stub();
+ public:
+ virtual void emit_code(MacroAssembler& masm) = 0;
+ };
+
+ class ShenandoahLoadRefBarrierStubC2 : public ShenandoahBarrierStubC2 {
+ Register _obj;
+ Register _addr;
+ Register _tmp1;
+ Register _tmp2;
+ Register _tmp3;
+ bool _narrow;
+ ShenandoahLoadRefBarrierStubC2(const MachNode* node, Register obj, Register addr, Register tmp1, Register tmp2, Register tmp3, bool narrow) :
+ ShenandoahBarrierStubC2(node), _obj(obj), _addr(addr), _tmp1(tmp1), _tmp2(tmp2), _tmp3(tmp3), _narrow(narrow) {}
+ public:
+ static bool needs_barrier(const MachNode* node) {
+ return (node->barrier_data() & (ShenandoahBarrierStrong | ShenandoahBarrierWeak | ShenandoahBarrierPhantom | ShenandoahBarrierNative)) != 0;
+ }
+ static ShenandoahLoadRefBarrierStubC2* create(const MachNode* node, Register obj, Register addr, Register tmp1, Register tmp2, Register tmp3, bool narrow);
+ void emit_code(MacroAssembler& masm) override;
+ };
+
+ class ShenandoahSATBBarrierStubC2 : public ShenandoahBarrierStubC2 {
+ Register _addr;
+ Register _preval;
+ Register _tmp;
+ ShenandoahSATBBarrierStubC2(const MachNode* node, Register addr, Register preval, Register tmp) :
+ ShenandoahBarrierStubC2(node), _addr(addr), _preval(preval), _tmp(tmp) {}
+
+ public:
+ static bool needs_barrier(const MachNode* node) {
+ return (node->barrier_data() & ShenandoahBarrierSATB) != 0;
+ }
+ static ShenandoahSATBBarrierStubC2* create(const MachNode* node, Register addr, Register preval, Register tmp = noreg);
+
+ void emit_code(MacroAssembler& masm) override;
+ };
+
+ class ShenandoahCASBarrierSlowStubC2 : public ShenandoahBarrierStubC2 {
+ Register _addr_reg;
+ Address _addr;
+ Register _expected;
+ Register _new_val;
+ Register _result;
+ Register _tmp1;
+ Register _tmp2;
+ bool _cae;
+ bool _acquire;
+ bool _release;
+ bool _weak;
+
+ explicit ShenandoahCASBarrierSlowStubC2(const MachNode* node, Register addr_reg, Address addr, Register expected, Register new_val, Register result, Register tmp1, Register tmp2, bool cae, bool acquire, bool release, bool weak) :
+ ShenandoahBarrierStubC2(node),
+ _addr_reg(addr_reg), _addr(addr), _expected(expected), _new_val(new_val), _result(result), _tmp1(tmp1), _tmp2(tmp2), _cae(cae), _acquire(acquire), _release(release), _weak(weak) {}
! public:
! static ShenandoahCASBarrierSlowStubC2* create(const MachNode* node, Register addr, Register expected, Register new_val, Register result, Register tmp, bool cae, bool acquire, bool release, bool weak);
! static ShenandoahCASBarrierSlowStubC2* create(const MachNode* node, Address addr, Register expected, Register new_val, Register result, Register tmp1, Register tmp2, bool cae);
+ void emit_code(MacroAssembler& masm) override;
+ };
! class ShenandoahCASBarrierMidStubC2 : public ShenandoahBarrierStubC2 {
! ShenandoahCASBarrierSlowStubC2* _slow_stub;
+ Register _expected;
+ Register _result;
+ Register _tmp;
+ bool _cae;
+ ShenandoahCASBarrierMidStubC2(const MachNode* node, ShenandoahCASBarrierSlowStubC2* slow_stub, Register expected, Register result, Register tmp, bool cae) :
+ ShenandoahBarrierStubC2(node), _slow_stub(slow_stub), _expected(expected), _result(result), _tmp(tmp), _cae(cae) {}
+ public:
+ static ShenandoahCASBarrierMidStubC2* create(const MachNode* node, ShenandoahCASBarrierSlowStubC2* slow_stub, Register expected, Register result, Register tmp, bool cae);
+ void emit_code(MacroAssembler& masm) override;
};
#endif // SHARE_GC_SHENANDOAH_C2_SHENANDOAHBARRIERSETC2_HPP
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