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| author | zadeck <zadeck@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-01-27 22:23:32 +0000 |
|---|---|---|
| committer | zadeck <zadeck@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-01-27 22:23:32 +0000 |
| commit | fcf2ad9fd02a1c26242f14c379df42a4d774430f (patch) | |
| tree | abaa3980317c102c364cc5e69f9d31a4c7517c10 /gcc/doc | |
| parent | 52fdc46e80b7c8c4cc2c0fcf9ea807a2c578ccb0 (diff) | |
| download | gcc-fcf2ad9fd02a1c26242f14c379df42a4d774430f.tar.gz | |
2006-01-27 Daniel Berlin <dberlin@dberlin.org>
Kenneth Zadeck <zadeck@naturalbridge.com>
PR rtl-optimization/24762
* doc/tm.texi: Added TARGET_EXTRA_LIVE_ON_ENTRY.
* targhooks.c (hook_void_bitmap): New hook prototype.
* targhoohs.h (hook_void_bitmap): Ditto.
* bitmap.h (bitmap_head_def): Moved to coretypes.h.
* coretypes.h (bitmap_head_def): Moved from bitmap.h.
* target.h (live_on_entry): New function pointer.
* df-scan.c (df_all_hard_regs): Removed.
(df_scan_dump, df_hard_reg_init): Removed df_all_hard_regs.
(df_scan_free_internal): Added df->entry_block_defs.
(df_scan_alloc): Ditto.
(df_scan_dump): Ditto.
(df_uses_record): Plumbed flag field properly thru calls.
Record EH_RETURN_DATA_REGNO in eh blocks unconditionally.
This part fixes PR24762.
(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):
Added code to handle artifical defs in the entry to a function.
(df_ru_bb_local_compute): Ditto.
(df_rd_bb_local_compute_process_def): Ditto.
(df_rd_bb_local_compute): Ditto.
(df_lr_bb_local_compute): Ditto.
(df_ur_bb_local_compute): Ditto.
(df_urec_bb_local_compute): Ditto.
(df_chain_create_bb): Ditto.
(df_ur_local_finalize): Removed entry.
(df_urec_init): Ditto.
(df_urec_local_finalize): Ditto.
(df_ri_bb_compute): Added detection of last use of pseudos.
* 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.
* config/mips/mips.c (TARGET_EXTRA_LIVE_ON_ENTRY): Added value
for target hook.
* dce.c (marked_insn_p): Added code to handle artifical defs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110312 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 7bd8522077c..d60fc13c476 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -4481,6 +4481,15 @@ as the @code{sibcall} md pattern can not fail, or fall over to a may vary greatly between different architectures. @end deftypefn +@deftypefn {Target Hook} void TARGET_EXTRA_LIVE_ON_ENTRY (bitmap *@var{regs}) +Add any hard registers to @var{regs} that are live on entry to the +function. This hook only needs to be defined to provide registers that +cannot be found by examination of FUNCTION_ARG_REGNO_P, the callee saved +registers, STATIC_CHAIN_INCOMING_REGNUM, STATIC_CHAIN_REGNUM, +TARGET_STRUCT_VALUE_RTX, FRAME_POINTER_REGNUM, EH_USES, +FRAME_POINTER_REGNUM, ARG_POINTER_REGNUM, and the PIC_OFFSET_TABLE_REGNUM. +@end deftypefn + @node Stack Smashing Protection @subsection Stack smashing protection @cindex stack smashing protection |