tree.h (struct tree_common): Rename raises_flag to nothrow_flag.

        * tree.h (struct tree_common): Rename raises_flag to nothrow_flag.
        (TREE_NOTHROW): Rename from TREE_RAISES.
        * toplev.c (rest_of_compilation): Set it.
        * print-tree.c (print_node): Adjust.
        * tree.c (stabilize_reference, build, build1): Don't set TREE_RAISES.
        (stabilize_reference_1, get_unwidened, get_narrower): Likewise.
        * calls.c (emit_call_1): Add 'nothrow' parm.  Add
        REG_EH_REGION note as appropriate.
        (libfunc_nothrow): New fn.
        (emit_library_call, emit_library_call_value): Use it.
        (expand_call): Check TREE_NOTHROW.

cp:
        * call.c (build_call): Set TREE_NOTHROW on the CALL_EXPR as
        appropriate.
        * decl.c (define_function): Set TREE_NOTHROW on the FUNCTION_DECL.
        * except.c (call_eh_info, alloc_eh_object, expand_throw): Set
        TREE_NOTHROW or TREE_THIS_VOLATILE on the function as appropriate.
        * rtti.c (build_runtime_decl, get_tinfo_decl, build_dynamic_cast_1,
        expand_si_desc, expand_class_desc, expand_ptr_desc, expand_attr_desc,
        expand_generic_desc): Likewise.

From-SVN: r32453

1 files changed, 13 insertions, 11 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 6357562..cfb8e8e 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -206,7 +206,7 @@ struct tree_common
   unsigned asm_written_flag: 1;
 
   unsigned used_flag : 1;
-  unsigned raises_flag : 1;
+  unsigned nothrow_flag : 1;
   unsigned static_flag : 1;
   unsigned public_flag : 1;
   unsigned private_flag : 1;
@@ -322,10 +322,10 @@ struct tree_common
        TREE_USED in
            expressions, IDENTIFIER_NODE
 
-   raises_flag:
+   nothrow_flag:
 
-       TREE_RAISES in
-           expressions
+       TREE_NOTHROW in
+           CALL_EXPR, FUNCTION_DECL
 
 							  */
 /* Define accessors for the fields that all tree nodes have
@@ -599,9 +599,9 @@ extern void tree_class_check_failed PARAMS ((const tree, char,
    was used.  */
 #define TREE_USED(NODE) ((NODE)->common.used_flag)
 
-/* Nonzero for a tree node whose evaluation could result
-   in the raising of an exception.  Not implemented yet.  */
-#define TREE_RAISES(NODE) ((NODE)->common.raises_flag)
+/* In a FUNCTION_DECL, nonzero means a call to the function cannot throw
+   an exception.  In a CALL_EXPR, nonzero means the call cannot throw.  */
+#define TREE_NOTHROW(NODE) ((NODE)->common.nothrow_flag)
 
 /* Used in classes in C++.  */
 #define TREE_PRIVATE(NODE) ((NODE)->common.private_flag)
@@ -1300,15 +1300,17 @@ struct tree_type
    contour that restored a stack level and which is now exited.  */
 #define DECL_TOO_LATE(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag)
 
-/* In a FUNCTION_DECL, nonzero means a built in function.  */
-#define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
-/* For a builtin function, identify which part of the compiler defined it.  */
-#define DECL_BUILT_IN_CLASS(NODE) (DECL_CHECK (NODE)->decl.built_in_class)
+/* Unused in FUNCTION_DECL.  */
 
 /* In a VAR_DECL that's static,
    nonzero if the space is in the text section.  */
 #define DECL_IN_TEXT_SECTION(NODE) (DECL_CHECK (NODE)->decl.bit_field_flag)
 
+/* In a FUNCTION_DECL, nonzero means a built in function.  */
+#define DECL_BUILT_IN(NODE) (DECL_BUILT_IN_CLASS (NODE) != NOT_BUILT_IN)
+/* For a builtin function, identify which part of the compiler defined it.  */
+#define DECL_BUILT_IN_CLASS(NODE) (DECL_CHECK (NODE)->decl.built_in_class)
+
 /* Used in VAR_DECLs to indicate that the variable is a vtable.
    Used in FIELD_DECLs for vtable pointers.
    Used in FUNCTION_DECLs to indicate that the function is virtual.  */