egcs/gcc ChangeLog alias.c basic-block.h flow. ...

[hubicka@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	egcs
Changes by:	hubicka@gcc.gnu.org	2001-07-30 13:30:24

Modified files:
	gcc            : ChangeLog alias.c basic-block.h flow.c 
	                 function.c reg-stack.c toplev.c 
	gcc/config/i386: i386.c 

Log message:
	* i386.c (ix86_output_main_function_alignment_hack): New function.
	(TARGET_ASM_FUNCTION_PROLOGUE): Default to it.
	
	* flow.c (mark_dfs_back_edges): Move from loop_p ; mark back
	edges by EDGE_DFS_BACK flag.
	(dump_edge_info): Add dfs_back flag.
	* basic-block.h (EDGE_DFS_BACK): New constant.
	(mark_dfs_back_edges): Declare.
	* alias.c (loop_p): Remove.
	(mark_constant_function): Use mark_dfs_back_edges.
	
	* reg-stack.c (block_info_def): Add predecesors counter and stack_out.
	(reg_to_stack): Call mark_dfs_back_edges; count the predecesors.
	(compensate_edge): Break out from ...
	(convert_regs_1): ... here; do smart choosing of stack_out to copy.
	(convert_regs_2): Set block_done once block is really done;
	Do updating of the predecesors counts.
	
	* toplev.c (rest_of_compilation): Recompute block_for_insn
	before post-reload cfg_cleanup.
	* function.c (thread_prologue_epilogue_insns):
	Call set_block_for_new_insns when emitting prologue directly.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.10837&r2=1.10838
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/alias.c.diff?cvsroot=gcc&r1=1.129&r2=1.130
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/basic-block.h.diff?cvsroot=gcc&r1=1.108&r2=1.109
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/flow.c.diff?cvsroot=gcc&r1=1.451&r2=1.452
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/function.c.diff?cvsroot=gcc&r1=1.285&r2=1.286
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/reg-stack.c.diff?cvsroot=gcc&r1=1.83&r2=1.84
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/toplev.c.diff?cvsroot=gcc&r1=1.501&r2=1.502
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/egcs/gcc/config/i386/i386.c.diff?cvsroot=gcc&r1=1.289&r2=1.290