/* Sets (bit vectors) of hard registers, and operations on them.
- Copyright (C) 1987, 1992, 1994, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1992, 1994, 2000, 2003, 2004
+ Free Software Foundation, Inc.
This file is part of GCC
Note that lots of code assumes that the first part of a regset is
the same format as a HARD_REG_SET. To help make sure this is true,
- we only try the widest integer mode (HOST_WIDE_INT) instead of all the
- smaller types. This approach loses only if there are a very few
- registers and then only in the few cases where we have an array of
- HARD_REG_SETs, so it needn't be as complex as it used to be. */
+ we only try the widest fast integer mode (HOST_WIDEST_FAST_INT)
+ instead of all the smaller types. This approach loses only if
+ there are very few registers and then only in the few cases where
+ we have an array of HARD_REG_SETs, so it needn't be as complex as
+ it used to be. */
-typedef unsigned HOST_WIDE_INT HARD_REG_ELT_TYPE;
+typedef unsigned HOST_WIDEST_FAST_INT HARD_REG_ELT_TYPE;
-#if FIRST_PSEUDO_REGISTER <= HOST_BITS_PER_WIDE_INT
+#if FIRST_PSEUDO_REGISTER <= HOST_BITS_PER_WIDEST_FAST_INT
#define HARD_REG_SET HARD_REG_ELT_TYPE
#else
#define HARD_REG_SET_LONGS \
- ((FIRST_PSEUDO_REGISTER + HOST_BITS_PER_WIDE_INT - 1) \
- / HOST_BITS_PER_WIDE_INT)
+ ((FIRST_PSEUDO_REGISTER + HOST_BITS_PER_WIDEST_FAST_INT - 1) \
+ / HOST_BITS_PER_WIDEST_FAST_INT)
typedef HARD_REG_ELT_TYPE HARD_REG_SET[HARD_REG_SET_LONGS];
#endif
#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))
#else
-#define UHOST_BITS_PER_WIDE_INT ((unsigned) HOST_BITS_PER_WIDE_INT)
+#define UHOST_BITS_PER_WIDE_INT ((unsigned) HOST_BITS_PER_WIDEST_FAST_INT)
#define SET_HARD_REG_BIT(SET, BIT) \
((SET)[(BIT) / UHOST_BITS_PER_WIDE_INT] \
&= ~(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
+#if FIRST_PSEUDO_REGISTER <= 2*HOST_BITS_PER_WIDEST_FAST_INT
#define CLEAR_HARD_REG_SET(TO) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- scan_tp_[0] &= scan_fp_[0]; \
+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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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
+#if FIRST_PSEUDO_REGISTER <= 3*HOST_BITS_PER_WIDEST_FAST_INT
#define CLEAR_HARD_REG_SET(TO) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (FROM); \
- scan_tp_[0] &= scan_fp_[0]; \
- scan_tp_[1] &= scan_fp_[1]; \
+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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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
+#if FIRST_PSEUDO_REGISTER <= 4*HOST_BITS_PER_WIDEST_FAST_INT
#define CLEAR_HARD_REG_SET(TO) \
-do { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register 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]; \
+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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_tp_ = (TO), *scan_fp_ = (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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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 { register HARD_REG_ELT_TYPE *scan_xp_ = (X), *scan_yp_ = (Y); \
+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 */
+#else /* FIRST_PSEUDO_REGISTER > 3*HOST_BITS_PER_WIDEST_FAST_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 (i == HARD_REG_SET_LONGS) goto TO; } while (0)
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;
/* 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. */
/* 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 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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