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author | Andrew Hsieh <andrewhsieh@google.com> | 2012-11-08 09:43:39 -0800 |
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committer | Andrew Hsieh <andrewhsieh@google.com> | 2012-11-08 09:43:39 -0800 |
commit | 3c56f697e112c79fb5457538fdc373e348beca24 (patch) | |
tree | 91987aa2182421ebead7f3bc3e14ae0effd4ba88 /gcc-4.2.1-5666.3/gcc/cselib.h | |
parent | 8add91f46171be1526e9b37fffcdb7683ad27d77 (diff) | |
download | toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.tar.gz toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.tar.bz2 toolchain_gcc-3c56f697e112c79fb5457538fdc373e348beca24.zip |
Initial checkin of unmodified gcc-5666.3.tar.gz
This is the source to build gcc-4.2 for MacOSX
gcc version 4.2.1 (Apple Inc. build 5666) (dot 3)
http://opensource.apple.com/tarballs/gcc/gcc-5666.3.tar.gz
Change-Id: I69540223f018e9d07f861fca04bd3833fc138f8b
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/cselib.h')
-rw-r--r-- | gcc-4.2.1-5666.3/gcc/cselib.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/cselib.h b/gcc-4.2.1-5666.3/gcc/cselib.h new file mode 100644 index 000000000..720944399 --- /dev/null +++ b/gcc-4.2.1-5666.3/gcc/cselib.h @@ -0,0 +1,74 @@ +/* Common subexpression elimination for GNU compiler. + Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, + 1999, 2003, 2004, 2005 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 2, 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 COPYING. If not, write to the Free +Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301, USA. */ + +/* Describe a value. */ +typedef struct cselib_val_struct GTY(()) +{ + /* The hash value. */ + unsigned int value; + union cselib_val_u + { + /* A VALUE rtx that points back to this structure. */ + rtx GTY ((tag ("1"))) val_rtx; + /* Used to keep a list of free cselib_val structures. */ + struct cselib_val_struct * GTY ((skip)) next_free; + } GTY ((desc ("1"))) u; + + /* All rtl expressions that hold this value at the current time during a + scan. */ + struct elt_loc_list *locs; + /* If this value is used as an address, points to a list of values that + use it as an address in a MEM. */ + struct elt_list *addr_list; + + struct cselib_val_struct *next_containing_mem; +} cselib_val; + +/* A list of rtl expressions that hold the same value. */ +struct elt_loc_list GTY(()) +{ + /* Next element in the list. */ + struct elt_loc_list *next; + /* An rtl expression that holds the value. */ + rtx loc; + /* The insn that made the equivalence. */ + rtx setting_insn; + /* True when setting insn is inside libcall. */ + bool in_libcall; +}; + +/* A list of cselib_val structures. */ +struct elt_list GTY(()) +{ + struct elt_list *next; + cselib_val *elt; +}; + +extern cselib_val *cselib_lookup (rtx, enum machine_mode, int); +extern void cselib_init (bool record_memory); +extern void cselib_clear_table (void); +extern void cselib_finish (void); +extern void cselib_process_insn (rtx); +extern enum machine_mode cselib_reg_set_mode (rtx); +extern int rtx_equal_for_cselib_p (rtx, rtx); +extern int references_value_p (rtx, int); +extern rtx cselib_subst_to_values (rtx); +extern void cselib_invalidate_rtx (rtx); |