Jakub Jelinek <jj@ultra.linux.cz>

        * c-decl.c (get_parm_info, store_parm_decls): Change all uses of
        PROMOTE_PROTOTYPES, so that it tests it as a C expression.
        Ensure expr.h is included.
        * c-typecheck.c (convert_arguments): Ditto.

        * expr.h: Supply default for PROMOTE_PROTOTYPES (0).

From-SVN: r28420

gcc/ChangeLog

+1999-08-02  Jakub Jelinek  <jj@ultra.linux.cz>
+
+	* c-decl.c (get_parm_info, store_parm_decls): Change all uses of
+	PROMOTE_PROTOTYPES, so that it tests it as a C expression.
+	Ensure expr.h is included.
+	* c-typecheck.c (convert_arguments): Ditto.
+
+	* expr.h: Supply default for PROMOTE_PROTOTYPES (0).
+
+	* config/arc/arc.h: Define PROMOTE_PROTOTYPES to 1.
+	* config/convex/convex.h: Ditto.
+	* config/dsp16xx/dsp16xx.h: Ditto.
+	* config/fx80/fx80.h: Ditto.
+	* config/gmicro/gmicro.h: Ditto.
+	* config/i370/i370.h: Ditto.
+	* config/i386/i386.h: Ditto.
+	* config/m32r/m32r.h: Ditto.
+	* config/m68k/m68k.h: Ditto.
+	* config/m88k/m88k.h: Ditto.
+	* config/mips/mips.h: Ditto.
+	* config/pa/pa.h: Ditto.
+	* config/pyr/pyr.h: Ditto.
+	* config/tahoe/tahoe.h: Ditto.
+	* config/we32k/we32k.h: Ditto.
+
+	* config/sparc/sparc.h: Define PROMOTE_PROTOTYPES
+	based on arch size.
+
+	* config/i1750a/i1750a.h: Define PROMOTE_PROTOTYPES to 0.
+
+	* config/i860/paragon.h: Remove PROMOTE_PROTOTYPES
+	from comment.
+
+	* tm.texi: Document new usage of PROMOTE_PROTOTYPES.
+
 1999-08-02  Richard Henderson  <rth@cygnus.com>
 
 	* m32r.c (m32r_setup_incoming_varargs): Use get_varargs_alias_set

gcc/c-decl.c

@@ -34,6 +34,7 @@ Boston, MA 02111-1307, USA.  */
 #include "c-tree.h"
 #include "c-lex.h"
 #include "toplev.h"
+#include "expr.h"
 
 #if USE_CPPLIB
 #include "cpplib.h"
@@ -5219,12 +5220,11 @@ get_parm_info (void_at_end)
 	   args are passed in their declared types.  */
 	tree type = TREE_TYPE (decl);
 	DECL_ARG_TYPE (decl) = type;
-#ifdef PROMOTE_PROTOTYPES
-	if ((TREE_CODE (type) == INTEGER_TYPE
-	     || TREE_CODE (type) == ENUMERAL_TYPE)
+	if (PROMOTE_PROTOTYPES
+	    && (TREE_CODE (type) == INTEGER_TYPE
+		|| TREE_CODE (type) == ENUMERAL_TYPE)
 	    && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
 	  DECL_ARG_TYPE (decl) = integer_type_node;
-#endif
 
 	types = saveable_tree_cons (NULL_TREE, TREE_TYPE (decl), types);
 	if (TYPE_MAIN_VARIANT (TREE_VALUE (types)) == void_type_node && ! erred
@@ -6557,13 +6557,14 @@ store_parm_decls ()
 			 `int foo(float x) {...}'.  This is particularly
 			 useful for argument types like uid_t.  */
 		      DECL_ARG_TYPE (parm) = TREE_TYPE (parm);
-#ifdef PROMOTE_PROTOTYPES
-		      if ((TREE_CODE (TREE_TYPE (parm)) == INTEGER_TYPE
-			   || TREE_CODE (TREE_TYPE (parm)) == ENUMERAL_TYPE)
+
+		      if (PROMOTE_PROTOTYPES
+			  && (TREE_CODE (TREE_TYPE (parm)) == INTEGER_TYPE
+			      || TREE_CODE (TREE_TYPE (parm)) == ENUMERAL_TYPE)
 			  && TYPE_PRECISION (TREE_TYPE (parm))
 			  < TYPE_PRECISION (integer_type_node))
 			DECL_ARG_TYPE (parm) = integer_type_node;
-#endif
+
 		      if (pedantic)
 			{
 			  pedwarn ("promoted argument `%s' doesn't match prototype",

gcc/c-typeck.c

@@ -1682,12 +1682,11 @@ convert_arguments (typelist, values, name, fundecl)
 					        (char *) 0, /* arg passing  */
 						fundecl, name, parmnum + 1);
 	      
-#ifdef PROMOTE_PROTOTYPES
-	      if ((TREE_CODE (type) == INTEGER_TYPE
-		   || TREE_CODE (type) == ENUMERAL_TYPE)
+	      if (PROMOTE_PROTOTYPES
+		  && (TREE_CODE (type) == INTEGER_TYPE
+		      || TREE_CODE (type) == ENUMERAL_TYPE)
 		  && (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)))
 		parmval = default_conversion (parmval);
-#endif
 	    }
 	  result = tree_cons (NULL_TREE, parmval, result);
 	}

gcc/expr.h

@@ -251,6 +251,11 @@ enum direction {none, upward, downward};  /* Value has this type.  */
 #define PRETEND_OUTGOING_VARARGS_NAMED 0
 #endif
 
+/* Supply a default definition for PROMOTE_PROTOTYPES.  */
+#ifndef PROMOTE_PROTOTYPES
+#define PROMOTE_PROTOTYPES	0
+#endif
+
 /* Nonzero if we do not know how to pass TYPE solely in registers.
    We cannot do so in the following cases:
 

gcc/tm.texi

@@ -2608,10 +2608,12 @@ control passing certain arguments in registers.
 @table @code
 @findex PROMOTE_PROTOTYPES
 @item PROMOTE_PROTOTYPES
-Define this macro if an argument declared in a prototype as an
-integral type smaller than @code{int} should actually be passed as an
-@code{int}.  In addition to avoiding errors in certain cases of
-mismatch, it also makes for better code on certain machines.
+A C expression whose value is nonzero if an argument declared in
+a prototype as an integral type smaller than @code{int} should
+actually be passed as an @code{int}.  In addition to avoiding
+errors in certain cases of mismatch, it also makes for better
+code on certain machines.  If the macro is not defined in target
+header files, it defaults to 0.
 
 @findex PUSH_ROUNDING
 @item PUSH_ROUNDING (@var{npushed})