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| author | Jan Hubicka <jh@suse.cz> | 2002-03-06 11:17:23 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2002-03-06 10:17:23 +0000 |
| commit | 3dec4024284c5108d43f436b4696edc0f40db749 (patch) | |
| tree | 1a7be85532d6be381af338d07dbdca5f8fd08db0 /gcc/emit-rtl.c | |
| parent | 9533dec17344558707c2338385daeab4474305d0 (diff) | |
| download | gcc-3dec4024284c5108d43f436b4696edc0f40db749.zip gcc-3dec4024284c5108d43f436b4696edc0f40db749.tar.gz gcc-3dec4024284c5108d43f436b4696edc0f40db749.tar.bz2 | |
cfgrtl.c (delete_insn_and_edges, [...]): New.
* cfgrtl.c (delete_insn_and_edges, delete_insn_chain_and_edges): New.
* rtl.h (delete_insn_and_edges, delete_insn_chain_and_edges): Declare
* basic-block.h (update_life_info, update_life_info_in_dirty_blocks,
delete_noop_moves): Return indeger.
* flow.c (ndead): New variable.
(propagate_block_delete_insn): Use delete_insn_and_edges; remove
BB argument; update callers.
(propagate_block_delete_libcall): Use delete_insn_chain_and_edges.
(life_analysis): Do not call purge_all_dead_edges.
(update_life_info): Return number of deleted insns; print statistics.
(update_life_info_in_dirty_blocks): likewise.
(delete_noop_moves): Use delete_insn_and_edges; print statistics;
return number of insns deleted.
* cse.c: Include timevar.h
(delete_trivially_dead_insns): Kill preserve_basic_blocks argument;
iterate until stabilizes; print statistics; return number of killed
insns.
* Makefile.in: (cse.o): Add timevar.h dependency
* rtl.h (delete_trivially_dead_insns): New.
* timever.def: Add TV_DELETE_TRIVIALLY_DEAD timer.
* toplev.c (rest_of_compilation): Update callers.
* cfgcleanup.c (try_optimize_cfg): Kill blocks.
(try_optimize_cfg): Do not update liveness.
(cleanup-cfg): Loop until try_optimize_cfg and dead code
removal stabilizes; use delete_trivially_dead_insns.
* cfgrtl.c (verify_flow_info): Sanity check outgoing edges.
From-SVN: r50355
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index ae3ab5f..4757427 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -2468,6 +2468,17 @@ get_insns () return first_insn; } +/* Specify a new insn as the first in the chain. */ + +void +set_first_insn (insn) + rtx insn; +{ + if (PREV_INSN (insn) != 0) + abort (); + first_insn = insn; +} + /* Return the last insn emitted in current sequence or current function. */ rtx |