r168545 - /branches/reload-v2a/gcc/ira-reload.c

[law at gcc dot gnu dot org]

Author: law
Date: Thu Jan  6 16:51:24 2011
New Revision: 168545

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168545
Log:
        * ira-reload.c (regs_to_load_alt): New bitmap.
        (regs_to_store_alt, alt_reg_map): Similarly.
        (identify_singleton_uses): Accept bitmap of SUBREGs to decompose
        and the DF flags for the current use.  Do not record implicit uses
        via assignments to SUBREGs.
        (collect_loads): Similarly.  Select between regs_to_load and
        regs_to_load_alt for SUBREG expressions we are decomposing.
        (emit_localizing_loads): Similarly for regs_to_load and reg_map.
        Adjust the memory address as needed for decomposed SUBREG expressions.
        if the pseudo is never used.
        (rename_sets): Similarly for regs_to_store and reg_map.
        (emit_localizing_stores): Similarly for regs_to_store and reg_map.
        More aggressively replace an assigned pseudo with its memory location
        (record_a_use_or_set): New.
        (localize_pseudos): Allocate and intialize _alt variants of reg_map,
        regs_to_store and regs_to_load.  For each SUBREG in the region that
        refers to an unallocated pseudo, record whether or not it used only
        in partial modes within the region.  Don't count uses/sets for
        naked CLOBBERs.  Handle "delete insn" return value from
        emit_localizing_stores for naked CLOBBERs.  Pass additional arguments
        to emit_localizing_loads, emit_localizing_stores, collect_loads.
        Handle decomposed SUBREGs.



Modified:
    branches/reload-v2a/gcc/ira-reload.c