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| author | Kenneth Zadeck <zadeck@naturalbridge.com> | 2008-12-18 13:38:39 +0000 |
|---|---|---|
| committer | Kenneth Zadeck <zadeck@gcc.gnu.org> | 2008-12-18 13:38:39 +0000 |
| commit | 02b47899e14982d742b91de30d3129b2719c59d0 (patch) | |
| tree | c64daed76d865d25eb4ef4c4e020e357ce13e831 /gcc/dce.c | |
| parent | fb5bc08bb353a574a011eaf5b7ae874672e4b289 (diff) | |
| download | gcc-02b47899e14982d742b91de30d3129b2719c59d0.zip gcc-02b47899e14982d742b91de30d3129b2719c59d0.tar.gz gcc-02b47899e14982d742b91de30d3129b2719c59d0.tar.bz2 | |
re PR rtl-optimization/37922 (code generation error)
2008-12-18 Kenneth Zadeck <zadeck@naturalbridge.com>
PR rtl-optimization/37922
* dse.c (bb_info): Added regs_live field.
(look_for_hardregs): New function.
(replace_read): Added regs_live parameter and code to check that
shift sequence does not clobber live hardregs.
(check_mem_read_rtx): Added parameter to replace_read.
(dse_step1): Added regs_live bitmap and initialize it.
(rest_of_handle_dse): Added DF_NOTES problem and earlier call to
df_analyze.
* df-problems.c Renamed to
df_simulate_initialize_backwards.
(df_simulate_one_insn): Renamed to
df_simulate_one_insn_backwards.
(df_simulate_artificial_refs_at_top): Renamed to
df_simulate_finalize_backwards.
(df_simulate_initialized_forwards,
df_simulate_one_insn_forwards,
df_simulate_finalize_backwards): New functions.
* df.h (df_simulate_artificial_refs_at_end): Renamed to
df_simulate_initialize_backwards.
(df_simulate_one_insn): Renamed to
df_simulate_one_insn_backwards.
(df_simulate_artificial_refs_at_top): Renamed to
df_simulate_finalize_backwards.
(df_simulate_initialized_forwards,
df_simulate_one_insn_forwards,
df_simulate_finalize_backwards): New functions.
* ra-conflict.c (global_conflicts): Renamed
df_simulate_artificial_refs_at_end to
df_simulate_initialize_backwards.
* sel-sched.c (propagate_lv_set): Renamed df_simulate_one_insn to
df_simulate_one_insn_backwards.
* ifcvt.c (dead_or_predicable): Renamed
df_simulate_artificial_refs_at_end to
df_simulate_initialize_backwards. Renamed df_simulate_one_insn to
df_simulate_one_insn_backwards.
* recog.c (peephole2_optimize): Ditto.
* rtl-factoring (collect_pattern_seqs, clear_regs_live_in_seq): Ditto.
2008-12-18 Kenneth Zadeck <zadeck@naturalbridge.com>
PR rtl-optimization/37922
* g++.dg/torture/pr37922.C: New test.
From-SVN: r142809
Diffstat (limited to 'gcc/dce.c')
| -rw-r--r-- | gcc/dce.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -607,7 +607,7 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au) bitmap_copy (local_live, DF_LR_OUT (bb)); - df_simulate_artificial_refs_at_end (bb, local_live); + df_simulate_initialize_backwards (bb, local_live); FOR_BB_INSNS_REVERSE (bb, insn) if (INSN_P (insn)) @@ -636,7 +636,7 @@ dce_process_block (basic_block bb, bool redo_out, bitmap au) df_simulate_uses (insn, local_live); } - df_simulate_artificial_refs_at_top (bb, local_live); + df_simulate_finalize_backwards (bb, local_live); block_changed = !bitmap_equal_p (local_live, DF_LR_IN (bb)); if (block_changed) |