Revert revision 164552.

gcc/

2010-11-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR rtl-optimization/45865
	* Makefile.in (df-problems.o): Revert revision 164552.
	* basic-block.h (enum bb_flags): Likewise.
	* cfgcleanup.c (block_was_dirty): Likewise.
	(try_forward_edges): Likewise.
	(try_crossjump_bb): Likewise.
	(try_head_merge_bb): Likewise.
	(try_optimize_cfg): Likewise.
	(cleanup_cfg): Likewise.
	* df-core.c (df_set_bb_dirty): Likewise.
	* df-problems.c: Likewise.
	(df_simulate_find_uses): Likewise.
	(MEMREF_NORMAL, MEMREF_VOLATILE): Likewise.
	(find_memory, find_memory_store): Likewise.
	(can_move_insns_across): Likewise.
	* df.h (can_move_insns_across): Likewise.
	* ifcvt.c (find_memory): Likewise.
	(dead_or_predicable): Likewise.

gcc/testsuite/

2010-11-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR rtl-optimization/45865
	* gcc.dg/pr45865.c: New.
	* gcc.dg/torture/pr45865.c: Likewise.

	* gcc.target/arm/headmerge-1.c: Revert revision 164552.
	* gcc.target/arm/headmerge-2.c: Likewise.
	* gcc.target/i386/headmerge-1.c: Likewise.
	* gcc.target/i386/headmerge-2.c: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166259 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1 insertions, 3 deletions

diff --git a/gcc/df.h b/gcc/df.h
index a831c9a3664..e52cc0e734e 100644
--- a/gcc/df.h
+++ b/gcc/df.h
@@ -971,9 +971,7 @@ extern void df_simulate_one_insn_backwards (basic_block, rtx, bitmap);
 extern void df_simulate_finalize_backwards (basic_block, bitmap);
 extern void df_simulate_initialize_forwards (basic_block, bitmap);
 extern void df_simulate_one_insn_forwards (basic_block, rtx, bitmap);
-extern void simulate_backwards_to_point (basic_block, regset, rtx);
-extern bool can_move_insns_across (rtx, rtx, rtx, rtx, basic_block, regset,
-				   regset, rtx *);
+
 /* Functions defined in df-scan.c.  */
 
 extern void df_scan_alloc (bitmap);