http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50326
Andreas Schwab <sch...@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernds at gcc dot gnu.org
Component|tree-optimization |rtl-optimization
--- Comment #1 from Andreas Schwab <sch...@linux-m68k.org> 2011-09-08 17:29:29
UTC ---
31adcf5623e6b926531c3a2973eb1b0c22d3c4c8 is the first bad commit
commit 31adcf5623e6b926531c3a2973eb1b0c22d3c4c8
Author: bernds <bernds@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Sep 7 15:57:45 2011 +0000
* regrename.c (struct du_head): Make nregs signed.
(closed_chains): Remove.
(create_new_chain): Return the new chain.
(chain_from_id): New static function.
(dump_def_use_chain): Change argument to be an int, indicating
the first ID to print. All callers changed.
(merge_overlapping_regs): Use chain_from_id. Assert that
chains don't conflict with themselves.
(rename_chains): Take no argument. Iterate over id_to_chain
rather to find chains to rename. Clear tick before the main
loop.
(struct incoming_reg_info): New struct.
(struct bb_rename_info): New struct.
(init_rename_info, set_incoming_from_chain, merge_chains): New
static functions.
(regrename_analyze): New static function, broken out of
regrename_optimize. Record and make use of open chain information
at basic block boundaries, and merge chains where possible.
(scan_rtx_reg): Make this_nregs signed. Don't update
closed_chains.
(build_def_use): Return a bool to indicate success. All callers
changed. Don't initialize global data here.
(regrename_optimize): Move most code out of here into
regrename_analyze.
* regs.h (add_range_to_hard_reg_set, remove_range_from_hard_reg_set,
range_overlaps_hard_reg_set_p, range_in_hard_reg_set_p): New
static inline functions.
* vec.h (FOR_EACH_VEC_ELT_FROM): New macro.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@178645
138bc75d-0d04-0410-961f-82ee72b054a4
