loop-iv.c: New file.

	* loop-iv.c: New file.
	* Makefile.in (loop-iv.o): New.
	* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
	* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
	num_loop_branches): New functions.
	* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
	iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
	find_simple_exit, iv_number_of_iterations, iv_analysis_done,
	get_simple_loop_desc, free_simple_loop_desc): Declare.
	(simple_loop_desc): New inline function.
	(struct rtx_iv, struct niter_desc): New.
	* cfgloopmanip.c (loopify): Specify semantics more precisely.
	* expr.c (force_operand): Handle subregs of expressions created by
	loop unroller.
	* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
	parts of the initialization to toplev.c
	* loop-unroll.c (loop_exit_at_end_p): New.
	(unroll_and_peel_loops): Call iv_analysis_done.
	(decide_peel_once_rolling, decide_peel_completely,
	decide_unroll_stupid, decide_unroll_constant_iterations,
	decide_unroll_runtime_iterations, decide_peel_simple,
	peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
	unroll_loop_runtime_iterations): Use new simple loop analysis.
	* loop-unswitch.c (compare_and_jump_seq): New.
	(may_unswitch_on_p): Renamed to ...
	(may_unswitch_on): Use new iv analysis.
	(reversed_condition): Export.
	(unswitch_single_loop, unswitch_loop): Use new iv analysis.
	* predict.c (estimate_probability): Use new simple loop analysis.
	* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
	canon_condition, simplify_using_condition): Declare.
	* stor-layout.c (get_mode_bounds): New.
	* toplev.c (rest_of_handle_loop2): Some parts of
	initialization/finalization moved here from loop-init.c.

From-SVN: r77951

1 files changed, 3 insertions, 1 deletions

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index d30c4fa..06a70f2 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -848,7 +848,7 @@ OBJS-common = \
  cfgloopanal.o cfgloopmanip.o loop-init.o loop-unswitch.o loop-unroll.o	   \
  cfgrtl.o combine.o conflict.o convert.o coverage.o cse.o cselib.o 	   \
  dbxout.o debug.o df.o diagnostic.o dojump.o doloop.o dominance.o	   \
- dwarf2asm.o dwarf2out.o emit-rtl.o except.o explow.o	                   \
+ dwarf2asm.o dwarf2out.o emit-rtl.o except.o explow.o loop-iv.o		   \
  expmed.o expr.o final.o flow.o fold-const.o function.o gcse.o		   \
  genrtl.o ggc-common.o global.o graph.o gtype-desc.o			   \
  haifa-sched.o hooks.o ifcvt.o insn-attrtab.o insn-emit.o insn-modes.o	   \
@@ -1719,6 +1719,8 @@ cfgloop.o : cfgloop.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) coretypes.h $(TM_H) \
    $(BASIC_BLOCK_H) hard-reg-set.h cfgloop.h flags.h
 cfgloopanal.o : cfgloopanal.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) \
    $(BASIC_BLOCK_H) hard-reg-set.h cfgloop.h $(EXPR_H) coretypes.h $(TM_H)
+loop-iv.o : loop-iv.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) $(GGC_H) \
+   $(BASIC_BLOCK_H) hard-reg-set.h cfgloop.h $(EXPR_H) coretypes.h $(TM_H)
 cfgloopmanip.o : cfgloopmanip.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) \
    $(BASIC_BLOCK_H) hard-reg-set.h cfgloop.h cfglayout.h output.h coretypes.h $(TM_H)
 loop-init.o : loop-init.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) \