Re: [PATCH] more enhancements to df on the mainline.

[Kenneth Zadeck <zadeck at naturalbridge dot com>]

Daniel Berlin wrote:
> Kenneth Zadeck wrote:
>   
> > Ian,
> >
> > This patch is built on top of the two patches that I submitted yesterday
> > (http://gcc.gnu.org/ml/gcc-patches/2006-01/msg00971.html and
> > http://gcc.gnu.org/ml/gcc-patches/2006-01/msg00889.html).
> >
> > This patch deals with the rtl scanning (the patches yesterday dealt with
> > propagation and storage management).  This patch contains all of the
> > code necessary to find the registers live on entry to a function that we
> > discussed earlier.
> >
> > This patch has been bootstrapped and regression tested on
> > i686-pc-linux-gnu.
> >
> > Thanks,
> >
> > Kenny
> >
> > 2005-01-17  Daniel Berlin  <dberlin@dberlin.org>
> >        Kenneth Zadeck <zadeck@naturalbridge.com>
> >
> >    * doc/tm.texi: Added TARGET_EXTRA_LIVE_ON_ENTRY.
> >    * targhooks.c (hook_void_voidp): New hook prototype.
> >    * targhoohs.h (hook_void_voidp): New hook prototype.
> >    * df-scan.c (df_all_hard_regs): Removed.
> >    (df_scan_dump, df_hard_reg_init): Removed df_all_hard_regs.
> >    (df_scan_free_internal, df_scan_alloc, df_scan_dump): Added
> >    df->entry_block_defs.
> >    (df_uses_record): Plumbed flag field properly thru calls.
> >    Record EH_RETURN_DATA_REGNO in eh blocks unconditionally.
> >    (df_bb_refs_record): Added code to make the frame and arg
> >    pointers live in EH blocks.
> >    (df_refs_record): Added call to df_record_entry_block_defs.
> >    (df_record_entry_block_defs): New function.
> >    * df-core.c: Added comments to describe new artifical defs.
> >    * df.h (DF_REF_DIES_AFTER_THIS_USE): New flag in enum df_ref_flags.
> >    (entry_block_defs): New field in struct df.
> >    (df_all_hard_regs): Deleted.
> >    * target-def.h: Added TARGET_EXTRA_LIVE_ON_ENTRY.
> >    * df-problems.c (df_ru_bb_local_compute_process_def,
> >    df_ru_bb_local_compute, df_rd_bb_local_compute_process_def,
> >    df_rd_bb_local_compute, df_lr_bb_local_compute,
> >    df_ur_bb_local_compute, df_urec_bb_local_compute,
> >    df_chain_create_bb): Added code to handle artifical
> >    defs in the entry to a function.
> >    (df_ur_local_finalize, df_urec_init, df_urec_local_finalize):
> >    Removed entry.
> >    (df_ri_bb_compute): Added detection of last use of pseudos.
> >     
>
> You missed a bunch of *'s in your changelog :)
>
> You meant to write
>
>   
> >    * Makefile.in (df-scan.o): Updated dependencies.
> >    * config/mips/mips-protos.h (mips_set_live_on_entry): Added.
> >    * config/mips/mips.c (mips_set_live_on_entry): Added.
> >    (TARGET_EXTRA_LIVE_ON_ENTRY): Added value
> >    for target hook.
> >    * dce.c (marked_insn_p): Added code to handle artifical defs.
> >
> >
> >     
I fixed my copy so the correct code will go in.  I also removed the last 
line, which was only meant for the dataflow branch since dce has not 
been checked in yet.

kenny