re PR target/14887 (compat/struct-ret-19 failure on ia64-hpux - argument passing bug)

	PR 14887
	* config/ia64/hpux.h (MEMBER_TYPE_FORCES_BLK): Look only at
	mode argument.
	* config/ia64/ia64.c (ia64_hpux_file_end): Check
	TREE_SYMBOL_REFERENCED on DECL_ASSEMBLER_NAME, not DECL_NAME.

From-SVN: r80571

gcc/config/ia64/hpux.h

@@ -112,13 +112,13 @@ do {							\
   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32 | MASK_INLINE_FLOAT_DIV_THR)
 
 /* This needs to be set to force structure arguments with a single
-   field to be treated as structures and not as the type of their
-   field.  Without this a structure with a single char will be
-   returned just like a char variable and that is wrong on HP-UX
-   IA64.  */
+   integer field to be treated as structures and not as the type of
+   their field.  Without this a structure with a single char will be
+   returned just like a char variable, instead of being returned at the
+   top of the register as specified for big-endian IA64.  */
 
 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
-  (TREE_CODE (TREE_TYPE (FIELD)) != REAL_TYPE || MODE == TFmode)
+  (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
 
 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
    but that doesn't put out the @function type information which causes

gcc/config/ia64/ia64.c

@@ -8732,7 +8732,7 @@ ia64_hpux_file_end (void)
   for (p = extern_func_head; p; p = p->next)
     {
       tree decl = p->decl;
-      tree id = DECL_NAME (decl);
+      tree id = DECL_ASSEMBLER_NAME (decl);
 
       if (!id)
 	abort ();