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From-SVN: r191
This commit is contained in:
Richard Kenner 1992-01-15 16:34:28 -05:00
parent d7429b6aeb
commit c66e0741f8
2 changed files with 22 additions and 11 deletions
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2
gcc/genrecog.c
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@ -1,5 +1,5 @@
/* Generate code from machine description to recognize rtl as insns. /* Generate code from machine description to recognize rtl as insns.
Copyright (C) 1987, 1988, 1991 Free Software Foundation, Inc. Copyright (C) 1987, 1988, 1992 Free Software Foundation, Inc.
This file is part of GNU CC. This file is part of GNU CC.

31
gcc/integrate.c
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@ -1,5 +1,5 @@
/* Procedure integration for GNU CC. /* Procedure integration for GNU CC.
Copyright (C) 1988-1991 Free Software Foundation, Inc. Copyright (C) 1988, 1992 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com) Contributed by Michael Tiemann (tiemann@cygnus.com)
This file is part of GNU CC. This file is part of GNU CC.
@ -1042,7 +1042,6 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add
rtx *arg_vals; rtx *arg_vals;
rtx insn; rtx insn;
int max_regno; int max_regno;
int equiv_map_size;
register int i; register int i;
int min_labelno = FIRST_LABELNO (header); int min_labelno = FIRST_LABELNO (header);
int max_labelno = LAST_LABELNO (header); int max_labelno = LAST_LABELNO (header);
@ -1173,16 +1172,26 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add
/* const_equiv_map maps pseudos in our routine to constants, so it needs to /* const_equiv_map maps pseudos in our routine to constants, so it needs to
be large enough for all our pseudos. This is the number we are currently be large enough for all our pseudos. This is the number we are currently
using plus the number in the called routine, plus one for each arg and using plus the number in the called routine, plus 15 for each arg,
one for the return value. */ five to compute the virtual frame pointer, and five for the return value.
equiv_map_size This should be enough for most cases. We do not reference entries
= max_reg_num () + (max_regno - FIRST_PSEUDO_REGISTER) + nargs + 1; outside the range of the map.
map->const_equiv_map = (rtx *)alloca (equiv_map_size * sizeof (rtx)); ??? These numbers are quite arbitrary and were obtained by
bzero (map->const_equiv_map, equiv_map_size * sizeof (rtx)); experimentation. At some point, we should try to allocate the
table after all the parameters are set up so we an more accurately
estimate the number of pseudos we will need. */
map->const_age_map = (unsigned *)alloca (equiv_map_size * sizeof (unsigned)); map->const_equiv_map_size
bzero (map->const_age_map, equiv_map_size * sizeof (unsigned)); = max_reg_num () + (max_regno - FIRST_PSEUDO_REGISTER) + 15 * nargs + 10;
map->const_equiv_map
= (rtx *)alloca (map->const_equiv_map_size * sizeof (rtx));
bzero (map->const_equiv_map, map->const_equiv_map_size * sizeof (rtx));
map->const_age_map
= (unsigned *)alloca (map->const_equiv_map_size * sizeof (unsigned));
bzero (map->const_age_map, map->const_equiv_map_size * sizeof (unsigned));
map->const_age = 0; map->const_age = 0;
/* Record the current insn in case we have to set up pointers to frame /* Record the current insn in case we have to set up pointers to frame
@ -2139,7 +2148,9 @@ subst_constants (loc, insn, map)
hard regs used as user variables with constants. */ hard regs used as user variables with constants. */
{ {
int regno = REGNO (x); int regno = REGNO (x);
if (! (regno < FIRST_PSEUDO_REGISTER && REG_USERVAR_P (x)) if (! (regno < FIRST_PSEUDO_REGISTER && REG_USERVAR_P (x))
&& regno < map->const_equiv_map_size
&& map->const_equiv_map[regno] != 0 && map->const_equiv_map[regno] != 0
&& map->const_age_map[regno] >= map->const_age) && map->const_age_map[regno] >= map->const_age)
validate_change (insn, loc, map->const_equiv_map[regno], 1); validate_change (insn, loc, map->const_equiv_map[regno], 1);