mem_inc_info Struct Reference
Collaboration diagram for mem_inc_info:
Data Fields | |
| rtx | inc_insn |
| rtx | mem_insn |
| rtx * | mem_loc |
| rtx | mem_reg0 |
| rtx | mem_index |
| HOST_WIDE_INT | mem_constant |
| HOST_WIDE_INT | inc_constant |
| rtx | inc_input |
Detailed Description
The following code discovers opportunities to switch a memory reference and an increment by modifying the address. We ensure that this is done only for dependencies that are only used to show a single register dependence (using DEP_NONREG and DEP_MULTIPLE), and so that every memory instruction involved is subject to only one dep that can cause a pattern change. When we discover a suitable dependency, we fill in the dep_replacement structure to show how to modify the memory reference.
Holds information about a pair of memory reference and register increment insns which depend on each other, but could possibly be interchanged.
Field Documentation
| HOST_WIDE_INT mem_inc_info::inc_constant |
The constant added in the increment insn. Negated if the increment is
after the memory address.
| rtx mem_inc_info::inc_input |
The source register used in the increment. May be different from mem_reg0
if the increment occurs before the memory address.
Referenced by ds_get_max_dep_weak(), and ds_max_merge().
| rtx mem_inc_info::inc_insn |
Referenced by debug_ds(), and ds_max_merge().
| HOST_WIDE_INT mem_inc_info::mem_constant |
The constant offset used in the memory address.
| rtx mem_inc_info::mem_index |
Any kind of index that is added to that register.
| rtx mem_inc_info::mem_insn |
Referenced by debug_ds(), ds_get_max_dep_weak(), and ds_get_speculation_types().
| rtx* mem_inc_info::mem_loc |
| rtx mem_inc_info::mem_reg0 |
A register occurring in the memory address for which we wish to break
the dependence. This must be identical to the destination register of
the increment.
The documentation for this struct was generated from the following file:
