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verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

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1 files changed, 125 insertions, 0 deletions

diff --git a/gcc/regset.h b/gcc/regset.h
new file mode 100644
index 000000000..75082a063
--- /dev/null
+++ b/gcc/regset.h
@@ -0,0 +1,125 @@
+/* Define regsets.
+   Copyright (C) 1987, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+   2005, 2006, 2007, 2008, 2009, 2010 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 3, 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 COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_REGSET_H
+#define GCC_REGSET_H
+
+/* TODO: regset is just a bitmap in its implementation.  The compiler does
+   not consistently use one or the other, i.e. sometimes variables are
+   declared as bitmap but they are actually regsets and regset accessors
+   are used, and vice versa, or mixed (see e.g. spilled_regs in IRA).
+
+   This should be cleaned up, either by just dropping the regset type, or
+   by changing all bitmaps that are really regsets to the regset type.  For
+   the latter option, a good start would be to change everything allocated
+   on the reg_obstack to regset.  */
+
+#include "bitmap.h"		/* For bitmap_iterator.  */
+#include "hard-reg-set.h"
+
+/* Head of register set linked list.  */
+typedef bitmap_head regset_head;
+
+/* A pointer to a regset_head.  */
+typedef bitmap regset;
+
+/* Allocate a register set with oballoc.  */
+#define ALLOC_REG_SET(OBSTACK) BITMAP_ALLOC (OBSTACK)
+
+/* Do any cleanup needed on a regset when it is no longer used.  */
+#define FREE_REG_SET(REGSET) BITMAP_FREE (REGSET)
+
+/* Initialize a new regset.  */
+#define INIT_REG_SET(HEAD) bitmap_initialize (HEAD, &reg_obstack)
+
+/* Clear a register set by freeing up the linked list.  */
+#define CLEAR_REG_SET(HEAD) bitmap_clear (HEAD)
+
+/* Copy a register set to another register set.  */
+#define COPY_REG_SET(TO, FROM) bitmap_copy (TO, FROM)
+
+/* Compare two register sets.  */
+#define REG_SET_EQUAL_P(A, B) bitmap_equal_p (A, B)
+
+/* `and' a register set with a second register set.  */
+#define AND_REG_SET(TO, FROM) bitmap_and_into (TO, FROM)
+
+/* `and' the complement of a register set with a register set.  */
+#define AND_COMPL_REG_SET(TO, FROM) bitmap_and_compl_into (TO, FROM)
+
+/* Inclusive or a register set with a second register set.  */
+#define IOR_REG_SET(TO, FROM) bitmap_ior_into (TO, FROM)
+
+/* Exclusive or a register set with a second register set.  */
+#define XOR_REG_SET(TO, FROM) bitmap_xor_into (TO, FROM)
+
+/* Or into TO the register set FROM1 `and'ed with the complement of FROM2.  */
+#define IOR_AND_COMPL_REG_SET(TO, FROM1, FROM2) \
+  bitmap_ior_and_compl_into (TO, FROM1, FROM2)
+
+/* Clear a single register in a register set.  */
+#define CLEAR_REGNO_REG_SET(HEAD, REG) bitmap_clear_bit (HEAD, REG)
+
+/* Set a single register in a register set.  */
+#define SET_REGNO_REG_SET(HEAD, REG) bitmap_set_bit (HEAD, REG)
+
+/* Return true if a register is set in a register set.  */
+#define REGNO_REG_SET_P(TO, REG) bitmap_bit_p (TO, REG)
+
+/* Copy the hard registers in a register set to the hard register set.  */
+extern void reg_set_to_hard_reg_set (HARD_REG_SET *, const_bitmap);
+#define REG_SET_TO_HARD_REG_SET(TO, FROM)				\
+do {									\
+  CLEAR_HARD_REG_SET (TO);						\
+  reg_set_to_hard_reg_set (&TO, FROM);					\
+} while (0)
+
+typedef bitmap_iterator reg_set_iterator;
+
+/* Loop over all registers in REGSET, starting with MIN, setting REGNUM to the
+   register number and executing CODE for all registers that are set.  */
+#define EXECUTE_IF_SET_IN_REG_SET(REGSET, MIN, REGNUM, RSI)	\
+  EXECUTE_IF_SET_IN_BITMAP (REGSET, MIN, REGNUM, RSI)
+
+/* Loop over all registers in REGSET1 and REGSET2, starting with MIN, setting
+   REGNUM to the register number and executing CODE for all registers that are
+   set in the first regset and not set in the second.  */
+#define EXECUTE_IF_AND_COMPL_IN_REG_SET(REGSET1, REGSET2, MIN, REGNUM, RSI) \
+  EXECUTE_IF_AND_COMPL_IN_BITMAP (REGSET1, REGSET2, MIN, REGNUM, RSI)
+
+/* Loop over all registers in REGSET1 and REGSET2, starting with MIN, setting
+   REGNUM to the register number and executing CODE for all registers that are
+   set in both regsets.  */
+#define EXECUTE_IF_AND_IN_REG_SET(REGSET1, REGSET2, MIN, REGNUM, RSI) \
+  EXECUTE_IF_AND_IN_BITMAP (REGSET1, REGSET2, MIN, REGNUM, RSI)	\
+
+/* Same information as REGS_INVALIDATED_BY_CALL but in regset form to be used
+   in dataflow more conveniently.  */
+
+extern regset regs_invalidated_by_call_regset;
+
+/* An obstack for regsets.  */
+extern bitmap_obstack reg_obstack;
+
+/* In cfg.c  */
+extern void dump_regset (regset, FILE *);
+extern void debug_regset (regset);
+
+#endif /* GCC_REGSET_H */