calls.c (initialize_argument_information): Add CALL_FROM_THUNK_P parameter.

	* calls.c (initialize_argument_information): Add CALL_FROM_THUNK_P
	parameter.  Use it instead of current_function_is_thunk.
	* function.h (struct function): Update documentation for is_thunk.
	* tree.h (CALL_FROM_THUNK_P): New macro.
	* config/alpha/alpha.c (alpha_sa_mask): Do not check
	no_new_pseudos when testing current_function_is_thunk.
	* config/rs6000/rs6000.c (rs6000_ra_ever_killed): Likeiwse.

	* decl.c (cxx_push_function_context): Do not set
	current_function_is_thunk.
	* method.c (use_thunk): Set CALL_FROM_THUNK on the call to the
	actual function.

From-SVN: r77244

1 files changed, 7 insertions, 0 deletions

diff --git a/gcc/tree.h b/gcc/tree.h
index 3f97099..6c3bc71 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -210,6 +210,8 @@ struct tree_common GTY(())
        TREE_PROTECTED in
            BLOCK
 	   ..._DECL
+       CALL_FROM_THUNK_P in
+           CALL_EXPR 
 
    side_effects_flag:
 
@@ -265,6 +267,7 @@ struct tree_common GTY(())
 
 	TREE_DEPRECATED in
 	   ..._DECL
+
 */
 
 /* Define accessors for the fields that all tree nodes have
@@ -623,6 +626,10 @@ extern void tree_operand_check_failed (int, enum tree_code,
    argument list.  */
 #define CALL_EXPR_HAS_RETURN_SLOT_ADDR(NODE) ((NODE)->common.private_flag)
 
+/* In a CALL_EXPR, means that the call is the jump from a thunk to the
+   thunked-to function.  */
+#define CALL_FROM_THUNK_P(NODE) ((NODE)->common.protected_flag)
+
 /* In a type, nonzero means that all objects of the type are guaranteed by the
    language or front-end to be properly aligned, so we can indicate that a MEM
    of this type is aligned at least to the alignment of the type, even if it