[Bug rtl-optimization/42575] arm-eabi-gcc 64-bit multiply weirdness

[bernds at gcc dot gnu dot org]

------- Comment #6 from bernds at gcc dot gnu dot org  2010-07-29 12:40 -------
Subject: Bug 42575

Author: bernds
Date: Thu Jul 29 12:39:57 2010
New Revision: 162678

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162678
Log:
        PR rtl-optimization/42575
        * dce.c (word_dce_process_block): Renamed from byte_dce_process_block.
        Argument AU removed.  All callers changed.  Ignore artificial refs.
        Use return value of df_word_lr_simulate_defs to decide whether an insn
        is necessary.
        (fast_dce): Rename arg to WORD_LEVEL.
        (run_word_dce): Renamed from rest_of_handle_fast_byte_dce.  No longer
        static.
        (pass_fast_rtl_byte_dce): Delete.
        * dce.h (run_word_dce): Declare.
        * df-core.c (df_print_word_regset): Renamed from df_print_byteregset.
        All callers changed.  Simplify code to only deal with two-word regs.
        * df.h (DF_WORD_LR): Renamed from DF_BYTE_LR.
        (DF_WORD_LR_BB_INFO): Renamed from DF_BYTE_LR_BB_INFO.
        (DF_WORD_LR_IN): Renamed from DF_BYTE_LR_IN.
        (DF_WORD_LR_OUT): Renamed from DF_BYTE_LR_OUT.
        (struct df_word_lr_bb_info): Renamed from df_byte_lr_bb_info.
        (df_word_lr_mark_ref): Declare.
        (df_word_lr_add_problem, df_word_lr_mark_ref, df_word_lr_simulate_defs,
        df_word_lr_simulate_uses): Declare or rename from byte variants.
        (df_byte_lr_simulate_artificial_refs_at_top,
        df_byte_lr_simulate_artificial_refs_at_end, df_byte_lr_get_regno_start,
        df_byte_lr_get_regno_len, df_compute_accessed_bytes): Delete
        declarations.
        (df_word_lr_get_bb_info): Rename from df_byte_lr_get_bb_info.
        (enum df_mm): Delete.
        * df-byte-scan.c: Delete file.
        * df-problems.c (df_word_lr_problem_data): Renamed from
        df_byte_lr_problem_data, all members deleted except for
        WORD_LR_BITMAPS, which is renamed from BYTE_LR_BITMAPS.  Uses changed.
        (df_word_lr_expand_bitmap, df_byte_lr_simulate_artificial_refs_at_top,
        df_byte_lr_simulate_artificial_refs_at_end, df_byte_lr_get_regno_start,
        df_byte_lr_get_regno_len, df_byte_lr_check_regs,
        df_byte_lr_confluence_0): Delete functions.
        (df_word_lr_free_bb_info): Renamed from df_byte_lr_free_bb_info; all
        callers changed.
        (df_word_lr_alloc): Renamed from df_byte_lr_alloc; all callers changed.
        Don't initialize members that were deleted, don't try to discover data
        about registers.  Ignore hard regs.
        (df_word_lr_reset): Renamed from df_byte_lr_reset; all callers changed.
        (df_word_lr_mark_ref): New function.
        (df_word_lr_bb_local_compute): Renamed from
        df_byte_bb_lr_local_compute; all callers changed.  Use
        df_word_lr_mark_ref.  Assert that artificial refs don't include
        pseudos.  Ignore hard registers.
        (df_word_lr_local_compute): Renamed from df_byte_lr_local_compute.
        Assert that exit block uses don't contain pseudos.
        (df_word_lr_init): Renamed from df_byte_lr_init; all callers changed.
        (df_word_lr_confluence_n): Renamed from df_byte_lr_confluence_n; all
        callers changed.  Ignore hard regs.
        (df_word_lr_transfer_function): Renamed from
        df_byte_lr_transfer_function; all callers changed.
        (df_word_lr_free): Renamed from df_byte_lr_free; all callers changed.
        (df_word_lr_top_dump): Renamed from df_byte_lr_top_dump; all callers
        changed.
        (df_word_lr_bottom_dump): Renamed from df_byte_lr_bottom_dump; all
        callers changed.
        (problem_WORD_LR): Renamed from problem_BYTE_LR; uses changed;
        confluence operator 0 set to NULL.
        (df_word_lr_add_problem): Renamed from df_byte_lr_add_problem; all
        callers changed.
        (df_word_lr_simulate_defs): Renamed from df_byte_lr_simulate_defs.
        Return bool, true if bitmap changed or insn otherwise necessary.
        All callers changed.  Simplify using df_word_lr_mark_ref.
        (df_word_lr_simulate_uses): Renamed from df_byte_lr_simulate_uses;
        all callers changed.  Simplify using df_word_lr_mark_ref.
        * lower-subreg.c: Include "dce.h"
        (decompose_multiword_subregs): Call run_word_dce if df available.
        * Makefile.in (lower-subreg.o): Adjust dependencies.
        (df-byte-scan.o): Delete.
        * timevar.def (TV_DF_WORD_LR): Renamed from TV_DF_BYTE_LR.

Removed:
    trunk/gcc/df-byte-scan.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/Makefile.in
    trunk/gcc/dce.c
    trunk/gcc/dce.h
    trunk/gcc/df-core.c
    trunk/gcc/df-problems.c
    trunk/gcc/df.h
    trunk/gcc/lower-subreg.c
    trunk/gcc/timevar.def


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42575