jdk8-mips64-public/hotspot: src/share/vm/opto/output.hpp@2f644f85485d (annotated)

src/share/vm/opto/output.hpp@2f644f85485d (annotated)

src/share/vm/opto/output.hpp

Fri, 03 Dec 2010 01:34:31 -0800

author: twisti
date: Fri, 03 Dec 2010 01:34:31 -0800
changeset 2350: 2f644f85485d
parent 2314: f95d63e2154a
child 2508: b92c45f2bc75
permissions: -rw-r--r--

6961690: load oops from constant table on SPARC
Summary: oops should be loaded from the constant table of an nmethod instead of materializing them with a long code sequence.
Reviewed-by: never, kvn

 /*
  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_OPTO_OUTPUT_HPP
 #define SHARE_VM_OPTO_OUTPUT_HPP
 #include "opto/block.hpp"
 #include "opto/node.hpp"
 #ifdef TARGET_ARCH_MODEL_x86_32
 # include "adfiles/ad_x86_32.hpp"
 #endif
 #ifdef TARGET_ARCH_MODEL_x86_64
 # include "adfiles/ad_x86_64.hpp"
 #endif
 #ifdef TARGET_ARCH_MODEL_sparc
 # include "adfiles/ad_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_MODEL_zero
 # include "adfiles/ad_zero.hpp"
 #endif
 class Arena;
 class Bundle;
 class Block;
 class Block_Array;
 class Node;
 class Node_Array;
 class Node_List;
 class PhaseCFG;
 class PhaseChaitin;
 class Pipeline_Use_Element;
 class Pipeline_Use;
 #ifndef PRODUCT
 #define DEBUG_ARG(x) , x
 #else
 #define DEBUG_ARG(x)
 #endif
 // Define the initial sizes for allocation of the resizable code buffer
 enum {
   initial_code_capacity  =  16 * 1024,
   initial_stub_capacity  =   4 * 1024,
   initial_const_capacity =   4 * 1024,
   initial_locs_capacity  =   3 * 1024
 };
 //------------------------------Scheduling----------------------------------
 // This class contains all the information necessary to implement instruction
 // scheduling and bundling.
 class Scheduling {
 private:
   // Arena to use
   Arena *_arena;
   // Control-Flow Graph info
   PhaseCFG *_cfg;
   // Register Allocation info
   PhaseRegAlloc *_regalloc;
   // Number of nodes in the method
   uint _node_bundling_limit;
   // List of scheduled nodes. Generated in reverse order
   Node_List _scheduled;
   // List of nodes currently available for choosing for scheduling
   Node_List _available;
   // Mapping from node (index) to basic block
   Block_Array& _bbs;
   // For each instruction beginning a bundle, the number of following
   // nodes to be bundled with it.
   Bundle *_node_bundling_base;
   // Mapping from register to Node
   Node_List _reg_node;
   // Free list for pinch nodes.
   Node_List _pinch_free_list;
   // Latency from the beginning of the containing basic block (base 1)
   // for each node.
   unsigned short *_node_latency;
   // Number of uses of this node within the containing basic block.
   short *_uses;
   // Schedulable portion of current block.  Skips Region/Phi/CreateEx up
   // front, branch+proj at end.  Also skips Catch/CProj (same as
   // branch-at-end), plus just-prior exception-throwing call.
   uint _bb_start, _bb_end;
   // Latency from the end of the basic block as scheduled
   unsigned short *_current_latency;
   // Remember the next node
   Node *_next_node;
   // Use this for an unconditional branch delay slot
   Node *_unconditional_delay_slot;
   // Pointer to a Nop
   MachNopNode *_nop;
   // Length of the current bundle, in instructions
   uint _bundle_instr_count;
   // Current Cycle number, for computing latencies and bundling
   uint _bundle_cycle_number;
   // Bundle information
   Pipeline_Use_Element _bundle_use_elements[resource_count];
   Pipeline_Use         _bundle_use;
   // Dump the available list
   void dump_available() const;
 public:
   Scheduling(Arena *arena, Compile &compile);
   // Destructor
   NOT_PRODUCT( ~Scheduling(); )
   // Step ahead "i" cycles
   void step(uint i);
   // Step ahead 1 cycle, and clear the bundle state (for example,
   // at a branch target)
   void step_and_clear();
   Bundle* node_bundling(const Node *n) {
     assert(valid_bundle_info(n), "oob");
     return (&_node_bundling_base[n->_idx]);
   }
   bool valid_bundle_info(const Node *n) const {
     return (_node_bundling_limit > n->_idx);
   }
   bool starts_bundle(const Node *n) const {
     return (_node_bundling_limit > n->_idx && _node_bundling_base[n->_idx].starts_bundle());
   }
   // Do the scheduling
   void DoScheduling();
   // Compute the local latencies walking forward over the list of
   // nodes for a basic block
   void ComputeLocalLatenciesForward(const Block *bb);
   // Compute the register antidependencies within a basic block
   void ComputeRegisterAntidependencies(Block *bb);
   void verify_do_def( Node *n, OptoReg::Name def, const char *msg );
   void verify_good_schedule( Block *b, const char *msg );
   void anti_do_def( Block *b, Node *def, OptoReg::Name def_reg, int is_def );
   void anti_do_use( Block *b, Node *use, OptoReg::Name use_reg );
   // Add a node to the current bundle
   void AddNodeToBundle(Node *n, const Block *bb);
   // Add a node to the list of available nodes
   void AddNodeToAvailableList(Node *n);
   // Compute the local use count for the nodes in a block, and compute
   // the list of instructions with no uses in the block as available
   void ComputeUseCount(const Block *bb);
   // Choose an instruction from the available list to add to the bundle
   Node * ChooseNodeToBundle();
   // See if this Node fits into the currently accumulating bundle
   bool NodeFitsInBundle(Node *n);
   // Decrement the use count for a node
  void DecrementUseCounts(Node *n, const Block *bb);
   // Garbage collect pinch nodes for reuse by other blocks.
   void garbage_collect_pinch_nodes();
   // Clean up a pinch node for reuse (helper for above).
   void cleanup_pinch( Node *pinch );
   // Information for statistics gathering
 #ifndef PRODUCT
 private:
   // Gather information on size of nops relative to total
   uint _branches, _unconditional_delays;
   static uint _total_nop_size, _total_method_size;
   static uint _total_branches, _total_unconditional_delays;
   static uint _total_instructions_per_bundle[Pipeline::_max_instrs_per_cycle+1];
 public:
   static void print_statistics();
   static void increment_instructions_per_bundle(uint i) {
     _total_instructions_per_bundle[i]++;
   }
   static void increment_nop_size(uint s) {
     _total_nop_size += s;
   }
   static void increment_method_size(uint s) {
     _total_method_size += s;
   }
 #endif
 };
 #endif // SHARE_VM_OPTO_OUTPUT_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/opto/output.hpp@2f644f85485d (annotated)

src/share/vm/opto/output.hpp