Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/opto/node.hpp
src/share/vm/opto/node.hpp
- changeset 1040
- 98cb887364d3
- parent 835
- cc80376deb0c
- child 1515
- 7c57aead6d3e
equal
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inserted
replaced
| 1039:ec59443af135 | 1040:98cb887364d3 |
|---|---|
| 255 protected: | 255 protected: |
| 256 friend class PhaseCFG; // Access to address of _in array elements | 256 friend class PhaseCFG; // Access to address of _in array elements |
| 257 Node **_in; // Array of use-def references to Nodes | 257 Node **_in; // Array of use-def references to Nodes |
| 258 Node **_out; // Array of def-use references to Nodes | 258 Node **_out; // Array of def-use references to Nodes |
| 259 | 259 |
| 260 // Input edges are split into two catagories. Required edges are required | 260 // Input edges are split into two categories. Required edges are required |
| 261 // for semantic correctness; order is important and NULLs are allowed. | 261 // for semantic correctness; order is important and NULLs are allowed. |
| 262 // Precedence edges are used to help determine execution order and are | 262 // Precedence edges are used to help determine execution order and are |
| 263 // added, e.g., for scheduling purposes. They are unordered and not | 263 // added, e.g., for scheduling purposes. They are unordered and not |
| 264 // duplicated; they have no embedded NULLs. Edges from 0 to _cnt-1 | 264 // duplicated; they have no embedded NULLs. Edges from 0 to _cnt-1 |
| 265 // are required, from _cnt to _max-1 are precedence edges. | 265 // are required, from _cnt to _max-1 are precedence edges. |
| 852 | 852 |
| 853 // Hash & compare functions, for pessimistic value numbering | 853 // Hash & compare functions, for pessimistic value numbering |
| 854 | 854 |
| 855 // If the hash function returns the special sentinel value NO_HASH, | 855 // If the hash function returns the special sentinel value NO_HASH, |
| 856 // the node is guaranteed never to compare equal to any other node. | 856 // the node is guaranteed never to compare equal to any other node. |
| 857 // If we accidently generate a hash with value NO_HASH the node | 857 // If we accidentally generate a hash with value NO_HASH the node |
| 858 // won't go into the table and we'll lose a little optimization. | 858 // won't go into the table and we'll lose a little optimization. |
| 859 enum { NO_HASH = 0 }; | 859 enum { NO_HASH = 0 }; |
| 860 virtual uint hash() const; | 860 virtual uint hash() const; |
| 861 virtual uint cmp( const Node &n ) const; | 861 virtual uint cmp( const Node &n ) const; |
| 862 | 862 |
