/* Sets (bit vectors) of hard registers, and operations on them.
- Copyright (C) 1987, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1992, 1994, 2000, 2003 Free Software Foundation, Inc.
-This file is part of GNU CC
+This file is part of GCC
-GNU CC 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 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.
-GNU CC 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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+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_HARD_REG_SET_H
+#define GCC_HARD_REG_SET_H
/* Define the type of a set of hard registers. */
#define CLEAR_HARD_REG_BIT(SET, BIT) \
((SET) &= ~(HARD_CONST (1) << (BIT)))
#define TEST_HARD_REG_BIT(SET, BIT) \
- ((SET) & (HARD_CONST (1) << (BIT)))
+ (!!((SET) & (HARD_CONST (1) << (BIT))))
#define CLEAR_HARD_REG_SET(TO) ((TO) = HARD_CONST (0))
#define SET_HARD_REG_SET(TO) ((TO) = ~ HARD_CONST (0))
&= ~(HARD_CONST (1) << ((BIT) % UHOST_BITS_PER_WIDE_INT)))
#define TEST_HARD_REG_BIT(SET, BIT) \
- ((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
- & (HARD_CONST (1) << ((BIT) % UHOST_BITS_PER_WIDE_INT)))
+ (!!((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
+ & (HARD_CONST (1) << ((BIT) % UHOST_BITS_PER_WIDE_INT))))
+
+#if FIRST_PSEUDO_REGISTER <= 2*HOST_BITS_PER_WIDE_INT
+#define CLEAR_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = 0; \
+ scan_tp_[1] = 0; } while (0)
+
+#define SET_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = -1; \
+ scan_tp_[1] = -1; } while (0)
+
+#define COPY_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = scan_fp_[0]; \
+ scan_tp_[1] = scan_fp_[1]; } while (0)
+
+#define COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = ~ scan_fp_[0]; \
+ scan_tp_[1] = ~ scan_fp_[1]; } while (0)
+
+#define AND_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= scan_fp_[0]; \
+ scan_tp_[1] &= scan_fp_[1]; } while (0)
+
+#define AND_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= ~ scan_fp_[0]; \
+ scan_tp_[1] &= ~ scan_fp_[1]; } while (0)
+
+#define IOR_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= scan_fp_[0]; \
+ scan_tp_[1] |= scan_fp_[1]; } while (0)
+
+#define IOR_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= ~ scan_fp_[0]; \
+ scan_tp_[1] |= ~ scan_fp_[1]; } while (0)
+
+#define GO_IF_HARD_REG_SUBSET(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((0 == (scan_xp_[0] & ~ scan_yp_[0])) \
+ && (0 == (scan_xp_[1] & ~ scan_yp_[1]))) \
+ goto TO; } while (0)
+
+#define GO_IF_HARD_REG_EQUAL(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((scan_xp_[0] == scan_yp_[0]) \
+ && (scan_xp_[1] == scan_yp_[1])) \
+ goto TO; } while (0)
+
+#else
+#if FIRST_PSEUDO_REGISTER <= 3*HOST_BITS_PER_WIDE_INT
+#define CLEAR_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = 0; \
+ scan_tp_[1] = 0; \
+ scan_tp_[2] = 0; } while (0)
+
+#define SET_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = -1; \
+ scan_tp_[1] = -1; \
+ scan_tp_[2] = -1; } while (0)
+
+#define COPY_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = scan_fp_[0]; \
+ scan_tp_[1] = scan_fp_[1]; \
+ scan_tp_[2] = scan_fp_[2]; } while (0)
+
+#define COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = ~ scan_fp_[0]; \
+ scan_tp_[1] = ~ scan_fp_[1]; \
+ scan_tp_[2] = ~ scan_fp_[2]; } while (0)
+
+#define AND_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= scan_fp_[0]; \
+ scan_tp_[1] &= scan_fp_[1]; \
+ scan_tp_[2] &= scan_fp_[2]; } while (0)
+
+#define AND_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= ~ scan_fp_[0]; \
+ scan_tp_[1] &= ~ scan_fp_[1]; \
+ scan_tp_[2] &= ~ scan_fp_[2]; } while (0)
+
+#define IOR_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= scan_fp_[0]; \
+ scan_tp_[1] |= scan_fp_[1]; \
+ scan_tp_[2] |= scan_fp_[2]; } while (0)
+
+#define IOR_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= ~ scan_fp_[0]; \
+ scan_tp_[1] |= ~ scan_fp_[1]; \
+ scan_tp_[2] |= ~ scan_fp_[2]; } while (0)
+
+#define GO_IF_HARD_REG_SUBSET(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((0 == (scan_xp_[0] & ~ scan_yp_[0])) \
+ && (0 == (scan_xp_[1] & ~ scan_yp_[1])) \
+ && (0 == (scan_xp_[2] & ~ scan_yp_[2]))) \
+ goto TO; } while (0)
+
+#define GO_IF_HARD_REG_EQUAL(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((scan_xp_[0] == scan_yp_[0]) \
+ && (scan_xp_[1] == scan_yp_[1]) \
+ && (scan_xp_[2] == scan_yp_[2])) \
+ goto TO; } while (0)
+
+#else
+#if FIRST_PSEUDO_REGISTER <= 4*HOST_BITS_PER_WIDE_INT
+#define CLEAR_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = 0; \
+ scan_tp_[1] = 0; \
+ scan_tp_[2] = 0; \
+ scan_tp_[3] = 0; } while (0)
+
+#define SET_HARD_REG_SET(TO) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ scan_tp_[0] = -1; \
+ scan_tp_[1] = -1; \
+ scan_tp_[2] = -1; \
+ scan_tp_[3] = -1; } while (0)
+
+#define COPY_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = scan_fp_[0]; \
+ scan_tp_[1] = scan_fp_[1]; \
+ scan_tp_[2] = scan_fp_[2]; \
+ scan_tp_[3] = scan_fp_[3]; } while (0)
+
+#define COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] = ~ scan_fp_[0]; \
+ scan_tp_[1] = ~ scan_fp_[1]; \
+ scan_tp_[2] = ~ scan_fp_[2]; \
+ scan_tp_[3] = ~ scan_fp_[3]; } while (0)
+
+#define AND_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= scan_fp_[0]; \
+ scan_tp_[1] &= scan_fp_[1]; \
+ scan_tp_[2] &= scan_fp_[2]; \
+ scan_tp_[3] &= scan_fp_[3]; } while (0)
+
+#define AND_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] &= ~ scan_fp_[0]; \
+ scan_tp_[1] &= ~ scan_fp_[1]; \
+ scan_tp_[2] &= ~ scan_fp_[2]; \
+ scan_tp_[3] &= ~ scan_fp_[3]; } while (0)
+
+#define IOR_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= scan_fp_[0]; \
+ scan_tp_[1] |= scan_fp_[1]; \
+ scan_tp_[2] |= scan_fp_[2]; \
+ scan_tp_[3] |= scan_fp_[3]; } while (0)
+
+#define IOR_COMPL_HARD_REG_SET(TO, FROM) \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ scan_tp_[0] |= ~ scan_fp_[0]; \
+ scan_tp_[1] |= ~ scan_fp_[1]; \
+ scan_tp_[2] |= ~ scan_fp_[2]; \
+ scan_tp_[3] |= ~ scan_fp_[3]; } while (0)
+
+#define GO_IF_HARD_REG_SUBSET(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((0 == (scan_xp_[0] & ~ scan_yp_[0])) \
+ && (0 == (scan_xp_[1] & ~ scan_yp_[1])) \
+ && (0 == (scan_xp_[2] & ~ scan_yp_[2])) \
+ && (0 == (scan_xp_[3] & ~ scan_yp_[3]))) \
+ goto TO; } while (0)
+
+#define GO_IF_HARD_REG_EQUAL(X,Y,TO) \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ if ((scan_xp_[0] == scan_yp_[0]) \
+ && (scan_xp_[1] == scan_yp_[1]) \
+ && (scan_xp_[2] == scan_yp_[2]) \
+ && (scan_xp_[3] == scan_yp_[3])) \
+ goto TO; } while (0)
+
+#else /* FIRST_PSEUDO_REGISTER > 3*HOST_BITS_PER_WIDE_INT */
#define CLEAR_HARD_REG_SET(TO) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ = 0; } while (0)
#define SET_HARD_REG_SET(TO) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ = -1; } while (0)
#define COPY_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ = *scan_fp_++; } while (0)
#define COMPL_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ = ~ *scan_fp_++; } while (0)
#define AND_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ &= *scan_fp_++; } while (0)
#define AND_COMPL_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ &= ~ *scan_fp_++; } while (0)
#define IOR_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ |= *scan_fp_++; } while (0)
#define IOR_COMPL_HARD_REG_SET(TO, FROM) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
*scan_tp_++ |= ~ *scan_fp_++; } while (0)
#define GO_IF_HARD_REG_SUBSET(X,Y,TO) \
-do { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
if (0 != (*scan_xp_++ & ~ *scan_yp_++)) break; \
if (i == HARD_REG_SET_LONGS) goto TO; } while (0)
#define GO_IF_HARD_REG_EQUAL(X,Y,TO) \
-do { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
- register int i; \
+do { HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+ int i; \
for (i = 0; i < HARD_REG_SET_LONGS; i++) \
- if (*scan_xp_++ != ~ *scan_yp_++)) break; \
+ if (*scan_xp_++ != *scan_yp_++) break; \
if (i == HARD_REG_SET_LONGS) goto TO; } while (0)
#endif
+#endif
+#endif
+#endif
/* Define some standard sets of registers. */
extern char call_used_regs[FIRST_PSEUDO_REGISTER];
+#ifdef CALL_REALLY_USED_REGISTERS
+extern char call_really_used_regs[];
+#endif
+
/* The same info as a HARD_REG_SET. */
extern HARD_REG_SET call_used_reg_set;
+/* Registers that we don't want to caller save. */
+extern HARD_REG_SET losing_caller_save_reg_set;
+
/* Indexed by hard register number, contains 1 for registers that are
fixed use -- i.e. in fixed_regs -- or a function value return register
- or STRUCT_VALUE_REGNUM or STATIC_CHAIN_REGNUM. These are the
+ or TARGET_STRUCT_VALUE_RTX or STATIC_CHAIN_REGNUM. These are the
registers that cannot hold quantities across calls even if we are
willing to save and restore them. */
extern char global_regs[FIRST_PSEUDO_REGISTER];
+/* Contains 1 for registers that are set or clobbered by calls. */
+/* ??? Ideally, this would be just call_used_regs plus global_regs, but
+ for someone's bright idea to have call_used_regs strictly include
+ fixed_regs. Which leaves us guessing as to the set of fixed_regs
+ that are actually preserved. We know for sure that those associated
+ with the local stack frame are safe, but scant others. */
+
+extern HARD_REG_SET regs_invalidated_by_call;
+
+#ifdef REG_ALLOC_ORDER
/* Table of register numbers in the order in which to try to use them. */
-#ifdef REG_ALLOC_ORDER /* Avoid undef symbol in certain broken linkers. */
extern int reg_alloc_order[FIRST_PSEUDO_REGISTER];
+
+/* The inverse of reg_alloc_order. */
+
+extern int inv_reg_alloc_order[FIRST_PSEUDO_REGISTER];
#endif
/* For each reg class, a HARD_REG_SET saying which registers are in it. */
-extern HARD_REG_SET reg_class_contents[];
+extern HARD_REG_SET reg_class_contents[N_REG_CLASSES];
/* For each reg class, number of regs it contains. */
-extern int reg_class_size[N_REG_CLASSES];
+extern unsigned int reg_class_size[N_REG_CLASSES];
/* For each reg class, table listing all the containing classes. */
/* Vector indexed by hardware reg giving its name. */
-extern char *reg_names[FIRST_PSEUDO_REGISTER];
+extern const char * reg_names[FIRST_PSEUDO_REGISTER];
+
+/* Given a hard REGN a FROM mode and a TO mode, return nonzero if
+ REGN cannot change modes between the specified modes. */
+#define REG_CANNOT_CHANGE_MODE_P(REGN, FROM, TO) \
+ CANNOT_CHANGE_MODE_CLASS (FROM, TO, REGNO_REG_CLASS (REGN))
+
+#endif /* ! GCC_HARD_REG_SET_H */
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