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egcs/gcc ChangeLog.RA ra.c reload.c reload1.c


CVSROOT:	/cvs/gcc
Module name:	egcs
Branch: 	new-regalloc-branch
Changes by:	matz@gcc.gnu.org	2001-07-17 12:29:04

Modified files:
	gcc            : ChangeLog.RA ra.c reload.c reload1.c 

Log message:
	2001-07-06  Michael Matz <matzmich@cs.tu-berlin.de>
	
	Instead of per insn visited[] us a per basic block info to avoid
	traversing an insn multiple times in live_in().
	Also remember use->undefined over multiple predecessors.
	(This makes 164.gzip work again).
	And also the whole SPECint2000 (besides eon which is C++, and
	wasn't tested) compiles and correctly runs the test workload.
	186.crafty needs to be compiled with -fno-rename-registers
	(only evaluate.c of that benchmark).
	
	* ra.c : (struct bb_begin_info): New.
	(visited): Remove.
	(live_in): Before processing predecessors of a block, check if that
	wasn't already done.
	Remember use-undefined over multiple predecessors blocks.
	(build_web_parts_and_conflicts): Don't allocate/free visited.
	Allocate and free a bb_begin_info entry for all basic blocks.
	
	* reload.c : (push_reload): Don't use REG_DEAD notes for finding
	a reg_rtx for input reloads.
	
	* reload1.c : (scan_paradoxical_subregs): Commenting wrongness of
	reg_max_ref_width[] setting.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.RA.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.1.2.28&r2=1.1.2.29
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ra.c.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.1.2.14&r2=1.1.2.15
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/reload.c.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.142&r2=1.142.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/reload1.c.diff?cvsroot=gcc&only_with_tag=new-regalloc-branch&r1=1.255.2.4&r2=1.255.2.5


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