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authorBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
committerBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/regset.h
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/regset.h')
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+/* Define regsets.
+ Copyright (C) 1987-2014 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;
+
+/* Same information as FIXED_REG_SET but in regset form. */
+extern regset fixed_reg_set_regset;
+
+/* An obstack for regsets. */
+extern bitmap_obstack reg_obstack;
+
+/* In df-core.c (which should use regset consistently instead of bitmap...) */
+extern void dump_regset (regset, FILE *);
+
+#endif /* GCC_REGSET_H */