2004-05-25 Paolo Bonzini <bonzini@gnu.org>

	* Makefile.in (OBJS): Add rtlhooks.o.
	(rtlanal.o): Depend on function.h.
	(cse.o): Depend on rtlhooks-def.h.
	(combine.o): Depend on rtlhooks-def.h.
	(rtlhooks.o): New rule.
	* combine.c: Include rtlhooks-def.h.
	(nonzero_bits, cached_nonzero_bits, nonzero_bits1,
	num_sign_bit_copies, cached_num_sign_bit_copies,
	num_sign_bit_copies1): Move most of the code to rtlanal.c.
	(reg_nonzero_bits_for_combine,
	reg_num_sign_bit_copies_for_combine): New functions holding
	the remnants of the above.
	(combine_rtl_hooks): New.
	(combine_instructions): Set rtl_hooks instead of gen_lowpart.
	* cse.c: Include rtlhooks-def.h.
	(cse_rtl_hooks): New.
	(cse_main): Set rtl_hooks instead of gen_lowpart.
	* emit-rtl.c (gen_lowpart): Remove.
	(gen_lowpart_general): Move to rtlhooks.c.
	* rtl.h (nonzero_bits, num_sign_bit_copies,
	struct rtl_hooks, rtl_hooks, general_rtl_hooks): New.
	(gen_lowpart_general): Remove.
	(gen_lowpart): Temporarily redefine as a macro.
	* rtlanal.c: Include function.h.
	(nonzero_bits, cached_nonzero_bits, nonzero_bits1,
	num_sign_bit_copies, cached_num_sign_bit_copies,
	num_sign_bit_copies1): New, from combine.c.
	* rtlhooks.c: New file.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@82234 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 46 insertions, 0 deletions

diff --git a/gcc/rtlhooks-def.h b/gcc/rtlhooks-def.h
new file mode 100644
index 00000000000..aaae80cab8c
--- /dev/null
+++ b/gcc/rtlhooks-def.h
@@ -0,0 +1,46 @@
+/* Default macros to initialize an rtl_hooks data structure.
+   Copyright 2004 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#ifndef GCC_RTL_HOOKS_DEF_H
+#define GCC_RTL_HOOKS_DEF_H
+
+#include "rtl.h"
+
+#define RTL_HOOKS_GEN_LOWPART gen_lowpart_general
+#define RTL_HOOKS_REG_NONZERO_REG_BITS reg_nonzero_bits_general
+#define RTL_HOOKS_REG_NUM_SIGN_BIT_COPIES reg_num_sign_bit_copies_general
+
+/* The structure is defined in rtl.h.  */
+#define RTL_HOOKS_INITIALIZER {			\
+  RTL_HOOKS_GEN_LOWPART,			\
+  RTL_HOOKS_REG_NONZERO_REG_BITS,		\
+  RTL_HOOKS_REG_NUM_SIGN_BIT_COPIES,		\
+}
+
+extern rtx gen_lowpart_general (enum machine_mode, rtx);
+extern rtx reg_nonzero_bits_general (rtx, enum machine_mode, rtx,
+				     enum machine_mode,
+				     unsigned HOST_WIDE_INT,
+				     unsigned HOST_WIDE_INT *);
+extern rtx reg_num_sign_bit_copies_general (rtx, enum machine_mode, rtx,
+					    enum machine_mode,
+					    unsigned int, unsigned int *);
+
+#endif /* GCC_RTL_HOOKS_DEF_H */