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authorJoseph Myers <jsm@polyomino.org.uk>2004-03-28 00:31:41 +0000
committerJoseph Myers <jsm28@gcc.gnu.org>2004-03-28 00:31:41 +0000
commit5baeaac0676b282f9ac9815f245e60e1d2f9b31f (patch)
tree3acc8edeeba4106c03dff66761ed088a39992358 /gcc/c-tree.h
parent4c24abdce41dacb7cceffefa2bc2fd5edea24c43 (diff)
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c-tree.h (C_DECL_REGISTER): New.
* c-tree.h (C_DECL_REGISTER): New. * c-aux-info.c (gen_decl), c-decl.c (objc_mark_locals_volatile, finish_decl, grokdeclarator, get_parm_info), c-typeck.c (build_array_ref, c_mark_addressable): Set and use it. * c-decl.c (grokdeclarator), c-typeck.c (c_mark_addressable): Allow structures with volatile fields to be declared register. Don't check TREE_ADDRESSABLE before warning about taking address of register. * c-decl.c (finish_decl): Don't allow structures with volatile fields to be placed in named register. * doc/trouble.texi: Remove reference to structures with volatile fields in registers. testsuite: * gcc.dg/940409-1.c: Remove XFAIL. * gcc.dg/reg-vol-struct-1.c: New test. From-SVN: r80037
Diffstat (limited to 'gcc/c-tree.h')
-rw-r--r--gcc/c-tree.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/c-tree.h b/gcc/c-tree.h
index bd53dbc..eb167ca 100644
--- a/gcc/c-tree.h
+++ b/gcc/c-tree.h
@@ -115,6 +115,11 @@ struct lang_type GTY(())
been declared. */
#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_4 (EXP)
+/* Record whether a decl was declared register. This is strictly a
+ front-end flag, whereas DECL_REGISTER is used for code generation;
+ they may differ for structures with volatile fields. */
+#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_5 (EXP)
+
/* Nonzero for a decl which either doesn't exist or isn't a prototype.
N.B. Could be simplified if all built-in decls had complete prototypes
(but this is presently difficult because some of them need FILE*). */