diff options
| author | Nathan Sidwell <nathan@gcc.gnu.org> | 2004-08-19 10:36:07 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2004-08-19 10:36:07 +0000 |
| commit | 89b0433e3a1f0a9ae590c1be5a6ba4b9aa690ae0 (patch) | |
| tree | ba738aa254abf741ddc0722884b43575c2331ca6 /gcc/tree.def | |
| parent | abc145a322be89c774fdcae8c883685d7943028a (diff) | |
| download | gcc-89b0433e3a1f0a9ae590c1be5a6ba4b9aa690ae0.zip gcc-89b0433e3a1f0a9ae590c1be5a6ba4b9aa690ae0.tar.gz gcc-89b0433e3a1f0a9ae590c1be5a6ba4b9aa690ae0.tar.bz2 | |
tree.h (TYPE_CACHED_VALUES_P): New.
* tree.h (TYPE_CACHED_VALUES_P): New.
(TYPE_CACHED_VALUES): New.
(TYPE_ORIG_SIZE_TYPE): Adjust.
* tree.def (INTEGER_CST): Update documentation.
* tree.c: Inlcude params.h.
(build_int_cst): Cache small values.
(build_type_copy): Do not copy the value cache.
* c-common.c (c_common_nodes_and_builtins): Add comment, remove
unneeded zeroing.
* c-typeck.c (build_c_cast): Add comment about OVERFLOW setting.
* expmed.c (const_mult_add_overflow_p): Clear type copy's value
cache.
* fold-const.c (force_fit_type): Copy value when setting
overflows.
(int_const_binop): Likewise.
* stor-layout.c: Include params.h
(set_sizetype): Create values cache.
(fixup_unsigned_type): Set UNSIGNED_P before caching any values.
* params.def (PARAM_INTEGER_SHARE_LIMIT): New.
* params.h (INTEGER_SHARE_LIMIT): New.
* Makefile.in (tree.o, stor-layout.o): Depend on PARAMS_H.
* cp/decl.c (finish_enum): Do not copy value node early, copy
later.
* cp/lex.c (cxx_init): Force null_node to be unique.
* java/parse.h (JAVA_RADIX10_FLAG): Rename to ...
(JAVA_NOT_RADIX10_FLAG): ... here. Invert meaning.
* java/lex.c (do_java_lex): Adjust.
(error_if_numeric_overflow): Likewise.
From-SVN: r86247
Diffstat (limited to 'gcc/tree.def')
| -rw-r--r-- | gcc/tree.def | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/tree.def b/gcc/tree.def index 552be88..fc7ed81 100644 --- a/gcc/tree.def +++ b/gcc/tree.def @@ -258,10 +258,13 @@ DEFTREECODE (LANG_TYPE, "lang_type", 't', 0) /* First, the constants. */ /* Contents are in TREE_INT_CST_LOW and TREE_INT_CST_HIGH fields, - 32 bits each, giving us a 64 bit constant capability. - Note: constants of type char in Pascal are INTEGER_CST, - and so are pointer constants such as nil in Pascal or NULL in C. - `(int *) 1' in C also results in an INTEGER_CST. */ + 32 bits each, giving us a 64 bit constant capability. INTEGER_CST + nodes can be shared, and therefore should be considered read only. + They should be copied, before setting a flag such as + TREE_OVERFLOW. If an INTEGER_CST has TREE_OVERFLOW or + TREE_CONSTANT_OVERFLOW already set, it is known to be unique. + INTEGER_CST nodes are created for the integral types, for pointer + types and for vector and float types in some circumstances. */ DEFTREECODE (INTEGER_CST, "integer_cst", 'c', 0) /* Contents are in TREE_REAL_CST field. */ |