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author | Alexander Kabaev <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
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committer | Alexander Kabaev <kan@FreeBSD.org> | 2007-05-19 01:19:51 +0000 |
commit | 6b834ef156bcf24dcf0e281f57ee5bde03ca07cf (patch) | |
tree | 0cb530c9c38af219e6dda2994c078b6b2b9ad853 /contrib/gcc/regs.h | |
parent | 9ba78bf6b1135ae200742b2a97ae5bc71c9fd265 (diff) | |
download | src-6b834ef156bcf24dcf0e281f57ee5bde03ca07cf.tar.gz src-6b834ef156bcf24dcf0e281f57ee5bde03ca07cf.zip |
GCC 4.2.0 release.
Notes
Notes:
svn path=/vendor/gcc/dist/; revision=169689
Diffstat (limited to 'contrib/gcc/regs.h')
-rw-r--r-- | contrib/gcc/regs.h | 52 |
1 files changed, 32 insertions, 20 deletions
diff --git a/contrib/gcc/regs.h b/contrib/gcc/regs.h index e9ab2d808643..ee074b9ed1be 100644 --- a/contrib/gcc/regs.h +++ b/contrib/gcc/regs.h @@ -1,6 +1,6 @@ /* Define per-register tables for data flow info and register allocation. Copyright (C) 1987, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2003 Free Software Foundation, Inc. + 1999, 2000, 2003, 2004 Free Software Foundation, Inc. This file is part of GCC. @@ -16,11 +16,14 @@ 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. */ +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ +#ifndef GCC_REGS_H +#define GCC_REGS_H #include "varray.h" +#include "obstack.h" #include "hard-reg-set.h" #include "basic-block.h" @@ -48,7 +51,6 @@ typedef struct reg_info_def { /* fields set by reg_scan */ int first_uid; /* UID of first insn to use (REG n) */ int last_uid; /* UID of last insn to use (REG n) */ - int last_note_uid; /* UID of last note to use (REG n) */ /* fields set by reg_scan & flow_analysis */ int sets; /* # of times (REG n) is set */ @@ -61,19 +63,22 @@ typedef struct reg_info_def int calls_crossed; /* # of calls (REG n) is live across */ int throw_calls_crossed; /* # of calls that may throw (REG n) is live across */ int basic_block; /* # of basic blocks (REG n) is used in */ - char changes_mode; /* whether (SUBREG (REG n)) exists and - is illegal. */ } reg_info; -extern varray_type reg_n_info; +typedef reg_info *reg_info_p; + +DEF_VEC_P(reg_info_p); +DEF_VEC_ALLOC_P(reg_info_p,heap); + +extern VEC(reg_info_p,heap) *reg_n_info; /* Indexed by n, gives number of times (REG n) is used or set. */ -#define REG_N_REFS(N) (VARRAY_REG (reg_n_info, N)->refs) +#define REG_N_REFS(N) (VEC_index (reg_info_p, reg_n_info, N)->refs) /* Estimate frequency of references to register N. */ -#define REG_FREQ(N) (VARRAY_REG (reg_n_info, N)->freq) +#define REG_FREQ(N) (VEC_index (reg_info_p, reg_n_info, N)->freq) /* The weights for each insn varries from 0 to REG_FREQ_BASE. This constant does not need to be high, as in infrequently executed @@ -97,7 +102,7 @@ extern varray_type reg_n_info; ??? both regscan and flow allocate space for this. We should settle on just copy. */ -#define REG_N_SETS(N) (VARRAY_REG (reg_n_info, N)->sets) +#define REG_N_SETS(N) (VEC_index (reg_info_p, reg_n_info, N)->sets) /* Indexed by N, gives number of insns in which register N dies. Note that if register N is live around loops, it can die @@ -105,7 +110,7 @@ extern varray_type reg_n_info; So this is only a reliable indicator of how many regions of life there are for registers that are contained in one basic block. */ -#define REG_N_DEATHS(N) (VARRAY_REG (reg_n_info, N)->deaths) +#define REG_N_DEATHS(N) (VEC_index (reg_info_p, reg_n_info, N)->deaths) /* Get the number of consecutive words required to hold pseudo-reg N. */ @@ -124,13 +129,14 @@ extern varray_type reg_n_info; /* Indexed by N, gives number of CALL_INSNS across which (REG n) is live. */ -#define REG_N_CALLS_CROSSED(N) (VARRAY_REG (reg_n_info, N)->calls_crossed) +#define REG_N_CALLS_CROSSED(N) \ + (VEC_index (reg_info_p, reg_n_info, N)->calls_crossed) /* Indexed by N, gives number of CALL_INSNS that may throw, across which (REG n) is live. */ #define REG_N_THROWING_CALLS_CROSSED(N) \ - (VARRAY_REG (reg_n_info, N)->throw_calls_crossed) + (VEC_index (reg_info_p, reg_n_info, N)->throw_calls_crossed) /* Total number of instructions at which (REG n) is live. The larger this is, the less priority (REG n) gets for @@ -147,7 +153,8 @@ extern varray_type reg_n_info; is not required. global.c makes an allocno for this but does not try to assign a hard register to it. */ -#define REG_LIVE_LENGTH(N) (VARRAY_REG (reg_n_info, N)->live_length) +#define REG_LIVE_LENGTH(N) \ + (VEC_index (reg_info_p, reg_n_info, N)->live_length) /* Vector of substitutions of register numbers, used to map pseudo regs into hardware regs. @@ -166,6 +173,10 @@ extern char regs_ever_live[FIRST_PSEUDO_REGISTER]; extern char regs_asm_clobbered[FIRST_PSEUDO_REGISTER]; +/* Vector indexed by machine mode saying whether there are regs of that mode. */ + +extern bool have_regs_of_mode [MAX_MACHINE_MODE]; + /* For each hard register, the widest mode object that it can contain. This will be a MODE_INT mode if the register can hold integers. Otherwise it will be a MODE_FLOAT or a MODE_CC mode, whichever is valid for the @@ -178,7 +189,7 @@ extern enum machine_mode reg_raw_mode[FIRST_PSEUDO_REGISTER]; It is sometimes adjusted for subsequent changes during loop, but not adjusted by cse even if cse invalidates it. */ -#define REGNO_FIRST_UID(N) (VARRAY_REG (reg_n_info, N)->first_uid) +#define REGNO_FIRST_UID(N) (VEC_index (reg_info_p, reg_n_info, N)->first_uid) /* Vector indexed by regno; gives uid of last insn using that reg. This is computed by reg_scan for use by cse and loop. @@ -186,11 +197,7 @@ extern enum machine_mode reg_raw_mode[FIRST_PSEUDO_REGISTER]; but not adjusted by cse even if cse invalidates it. This is harmless since cse won't scan through a loop end. */ -#define REGNO_LAST_UID(N) (VARRAY_REG (reg_n_info, N)->last_uid) - -/* Similar, but includes insns that mention the reg in their notes. */ - -#define REGNO_LAST_NOTE_UID(N) (VARRAY_REG (reg_n_info, N)->last_note_uid) +#define REGNO_LAST_UID(N) (VEC_index (reg_info_p, reg_n_info, N)->last_uid) /* List made of EXPR_LIST rtx's which gives pairs of pseudo registers that have to go in the same hard reg. */ @@ -229,3 +236,8 @@ extern int caller_save_needed; /* Allocate reg_n_info tables */ extern void allocate_reg_info (size_t, int, int); + +/* Specify number of hard registers given machine mode occupy. */ +extern unsigned char hard_regno_nregs[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE]; + +#endif /* GCC_REGS_H */ |